[Rails] Re: MySQL update BLOB
Yep I got it. So much trouble with the script so I missed the obvious. But, I still don't understand why the place holder for the update statement doesn't work: I mean that syntax: update_sql = "update SHARE set COMPANY_LOGO = ? WHERE ID = 8982167534873685924"; stmt = myconnect.prepare(update_sql) stmt.execute(data) -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Spree drag and drop: not recognizing JS
Greetings, I asked this over at the Spree google group but got no response. I'm hoping someone here might have experience with this. I am implementing a drag and drop cart with Rails 3 and jQuery. This cart works outside of Spree. The URL I call from the drop action is hardcoded as /products/add_to_cart.js. I also added an Add To Cart button that uses the new :remote => true <%= form_tag url_for(:action => 'add_to_cart', :id => domid), :id => "add-to-cart-form", :remote => true do %> <%= submit_tag "Add to Order" %> <% end %> This works! the add_to_cart method fires and understands I want a JS response. However, the problem still occurs when I try to drag and drop. Of course, I can't (don't know how) to use the rails remote helper inside of the javascript so I am "hardcoding" the call to / products/add_to_cart.js. So, rails is recognizing JS when done from a remote form but not by passing the .js extension. What do I need to do to get it to recognize this? Or, is there a better way? TIA, Dan -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: MySQL update BLOB
Please quote when replying. Roman Mandeleil wrote in post #970391: > tinyblob Well, there's your problem -- a MySQL TINYBLOB only holds 255 bytes of data! Best, -- Marnen Laibow-Koser http://www.marnen.org mar...@marnen.org Sent from my iPhone -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Re: Weird issue with converting floats to integer
Robert Walker wrote in post #970390:
> Marnen Laibow-Koser wrote in post #970377:
>> Then use fixed-point math. IEEE floats are 100% inappropriate for any
>> sort of mathematical calculation. And who cares how fast they are if
>> they're inaccurate? Inaccurate engineering calculations are worse than
>> none at all -- do *you* want to drive over that bridge? :)
>
> Let's break this down to a comparison of accuracy vs. precision.
>
> Take for example the value 1/3.
>
> First using floating point math:
>
> x = 1.0
> => 1.0
> y = 3.0
> => 3.0
> z = x / y
> => 0.
>
> Now with Ruby's BigDecimal math:
> x = BigDecimal.new('1')
> => #
> y = BigDecimal.new('3')
> => #
> z = x / y
> => #
>
> In the case of float we have 16 decimal digits of precision, but in the
> case of BigDecimal we have only eight digits of precision.
Are you sure? Or are only eight digits displayed?
>
> Yes, in the case of BigDecimal we have a value representing "precisely"
> the value 0., but that result is obviously less accurate than
> the result of the floating point calculation.
Not obvious at all, since I don't know how many 3s the BigDecimal is
*actually* storing.
>
> Over large aggregations this can make a difference.
Yes, it certainly can.
> It is certainly the
> case that IEEE floats introduce error due to the inherent storage
> limitations, but doing precise mathematics as fixed point has it's own
> complications as well.
Sure. BigDecimal is the best of both worlds.
>
> Ruby's BigDecimal class does not provide the needed accuracy for complex
> mathematics.
Of course it does. Why do you think it does not?
Anyway, if you need more than BigDecimal, then start climbing into the
realms of symbolic math with Rational.
> The difference is that BigDecimal always stores precise
> values within the limits of it storage space. Where floats store
> imprecise representations, but representations with a fixed precision.
>
> I don't think either of these classes are appropriate for the sort of
> math mentioned above.
Why is BigDecimal inappropriate? What would you use instead?
> But, they both have their uses.
I'm not sure Float has a proper use case at all. :)
Best,
--
Marnen Laibow-Koser
http://www.marnen.org
mar...@marnen.org
Sent from my iPhone
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[Rails] Re: Re: Re: Re: Re: Where put require
David Kahn wrote in post #970173: Well said. :-) -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Re: Re: Re: Where put require
Paul Bergstrom wrote in post #970168: > And so have I. But as I said. I'm not a natural programmer. But I try to > be a software developer and I think Rails is much easier to use than e g > php. Hopefully it will stay that way. Actually that should be web developer. A bit tired when I wrote that and missed it. I'm not into rails because of software development. Not sure why anyone would. -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: MySQL update BLOB
tinyblob -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Re: Weird issue with converting floats to integer
Marnen Laibow-Koser wrote in post #970377:
> Then use fixed-point math. IEEE floats are 100% inappropriate for any
> sort of mathematical calculation. And who cares how fast they are if
> they're inaccurate? Inaccurate engineering calculations are worse than
> none at all -- do *you* want to drive over that bridge? :)
Let's break this down to a comparison of accuracy vs. precision.
Take for example the value 1/3.
First using floating point math:
x = 1.0
=> 1.0
y = 3.0
=> 3.0
z = x / y
=> 0.
Now with Ruby's BigDecimal math:
x = BigDecimal.new('1')
=> #
y = BigDecimal.new('3')
=> #
z = x / y
=> #
In the case of float we have 16 decimal digits of precision, but in the
case of BigDecimal we have only eight digits of precision.
Yes, in the case of BigDecimal we have a value representing "precisely"
the value 0., but that result is obviously less accurate than
the result of the floating point calculation.
Over large aggregations this can make a difference. It is certainly the
case that IEEE floats introduce error due to the inherent storage
limitations, but doing precise mathematics as fixed point has it's own
complications as well.
Ruby's BigDecimal class does not provide the needed accuracy for complex
mathematics. The difference is that BigDecimal always stores precise
values within the limits of it storage space. Where floats store
imprecise representations, but representations with a fixed precision.
I don't think either of these classes are appropriate for the sort of
math mentioned above. But, they both have their uses.
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[Rails] Re: Running Rails 2 and Rails 3 side by side on Obuntu
Marnen Laibow-Koser wrote in post #970178: > Peter Vandenabeele wrote in post #970143: > [...] >> Thanks for that hint. It lead me to this page: >> >> http://rvm.beginrescueend.com/gemsets/basics/ > > You hadn't read that before? No. I am fairly new to rvm. Figured out $ rvm gemset help as a useful command for exploration :-) >> Now that we have bundler (with it's Gemfile) and rvm, >> what would be the best way to run e.g. a Rails 2.3.8 >> and a 3.0.3 on the same Ruby 1.8.7 version in rvm ? >> >> Would it be useful to use rvm gemsets, > > Of course. That way each project is completely independent. OK, that's good. I'll try it out. Thanks again, Peter -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: MySQL update BLOB
On Dec 23, 8:51 pm, Roman Mandeleil wrote: > Hi I am trying to update a blob column from Ruby script into MySQL DB. > The script is running on PC and DB on Linux host. > The problem I see is that only 255 bytes of data being stored , > is there any way to deal with that problem ? What's the type of the column? Fred > > myconnect = Mysql::new(host, user, "", db) > f = File.new(file_name,'rb') > > data = Mysql.escape_string(f.sysread(f.size)) > > update_sql = "update SHARE set COMPANY_LOGO = '"+ data + "' WHERE ID = > 8982167534873685924"; > > stmt = myconnect.prepare(update_sql) > stmt.execute() > > stmt.close > myconnect.commit > myconnect.close > > I also tried to leave a - '?' mark and than fill it with data, that one > is not storing anything. > > -- > Posted viahttp://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] update a foreign key in an association table
Hello, I'd like to know how to update a foreign key in an association table (many_to_many association) ? Here is my model, Split is the association table between Account and Transaction: class Account < ActiveRecord::Base set_primary_key :guid has_many :splits, :foreign_key => 'account_guid', :primary_key => 'guid' has_many :transactions, :through => :splits end class Transaction < ActiveRecord::Base set_primary_key :guid has_many :splits, :foreign_key => 'tx_guid', :primary_key => 'guid' has_many :accounts, :through => :splits end class Split < ActiveRecord::Base belongs_to :transaction, :foreign_key => 'tx_guid', :primary_key => 'guid' # here is the association that I'd like to change: belongs_to :account, :foreign_key => 'account_guid', :primary_key => 'guid' end I'm trying this but it does not work (the value is not updated): account = Account.new transaction.splits.first.account = account # error: prints the old value of account puts transaction.splits.first.account Do you have any idea ? Do I need to create a new Split and delete the old one or is it possible to update the existing one ? Thank you for your help, Fabrice -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] logserver with log4r
Hey guys, I am trying to set up a logging server using log4r ! When I try to run the server I get the following error message "LogServer not supported. ROMP is required (RuntimeError)" I installed romp the way its mentioned in some blog with similar issue. Any ideas about it ? Thanks. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Rails 3 - polymorphic associations problem with ActiveRecord::Relation
Hi, My application is running over ubuntu 10, ruby 1.9.2, rails 3.0.3 and passenger 3.0.2 + nginx. This application has several polymorphic associations and the problem is that when the associations are called it randomly returns either the related object or an ActiveRecord::Relation object. Has anybody had a similar problem or is this a known issue? Basically the Model looks like this: class Blahblah < ActiveRecord::Base belongs_to :data_object, :polymorphic => true end When I call data_object.id, sometimes I'll get the following error: "undefined method 'id' for ActiveRecord::Relation" other times, the association works fine If I try this in a rails console it seems to always work (could be because of the inspect the console does). Basically the issue always occurs when the app is running on nginx or apache. Any help will be appreciated. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Re: [Rails] One form, multiple models, custom validation
On 23/12/10 10:32, Serafino Picozzi wrote: Hi everyone, I hope someone can help me solve this problem. I have a model called Project with :has_many => :tasks. In the new Project form i allow the creation of 1 to n tasks on the fly thanks to accepts_nested_attributes_for, where the task model has some validations that block the creation of the new project if the required fields are not correct. This works just fine as it is supposed to work, but here's the problem: At least one task needs to have some fields not empty, otherwise the project should not be created. It can be any of the tasks but it's imperative that at least one of them has those attributes, for the other tasks these attributes are not required. Is there a way of doing that without strange hacks? Thanks in advance for your help Hi Serafino, I am assuming that you are using Javascript. If that is the case, then you can find the solution here http://stackoverflow.com/questions/1704142/unobtrusive-dynamic-form-fields-in-rails-with-jquery All the best, Fidel. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: One form, multiple models, custom validation
Would this not be the proper solution ?
User has many payments. I want the user to have at
least one payment with an amount, before a user is
valid.
class User < ActiveRecord::Base
default_scope :order => :id
has_many :payments
validate :has_one_complete_payment
private
def has_one_complete_payment
errors.add(:base, :missing_complete_payment) unless payments.detect
{|p| p.amount}
end
end
$ cat config/locales/en.yml
en:
hello: "Hello world"
activerecord:
errors:
models:
user:
attributes:
base:
missing_complete_payment: You need at least one payment
with amount filled out
That results in this behaviour:
$ rails c
Loading development environment (Rails 3.0.3)
001:0> user = User.new(:first_name => "Jon")
=> #
002:0> user.valid?
=> false
003:0> user.errors
=> #["You need at least one payment with amount
filled out"]}>
004:0> p1 = user.payments.build()
=> #
005:0> user.valid?
=> false
006:0> user.errors
=> #["You need at least one payment with amount
filled out"]}>
007:0> p2 = user.payments.build()
=> #
010:0> user.valid?
=> false
011:0> user.errors
=> #["You need at least one payment with amount
filled out"]}>
012:0> p2.amount = "123.45"
=> "123.45"
013:0> user.valid?
=> true
014:0> user.save
=> true
015:0> user.payments.inspect
=> "[#, #>]"
015:0>
HTH,
Peter
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Re: [Rails] Re: Re: Weird issue with converting floats to integer
On 23 December 2010 21:34, Marnen Laibow-Koser wrote: > Colin Law wrote in post #970376: >> On 23 December 2010 03:41, Marnen Laibow-Koser >> wrote: >>> 29114.9996362021192908287048 >>> >>> It bears repeating: never, ever use Floats for arithmetic. If you can't >>> use fixed-point math, then use BigDecimal. >> >> I have to disagree here. > > I knew someone would. :) You probably guessed it might be me :) > >> I would rephrase it as _almost_ never use >> Floats The one time when they would be appropriate is if you have a >> large amount of arithmetic to perform. The sort of thing that might >> occur in complex statistical analysis for example or engineering >> calculations of some sort. On most (possibly all) computers floating >> point consumes vastly less processor time to perform than BigDecimal. > > Then use fixed-point math. IEEE floats are 100% inappropriate for any > sort of mathematical calculation. And who cares how fast they are if > they're inaccurate? Inaccurate engineering calculations are worse than > none at all -- do *you* want to drive over that bridge? :) We are getting off topic for Rails apps but I think if you looked into most engineering and scientific software you would find they use floating point arithmetic. Fixed point is not appropriate as intermediate calculations need guaranteed _relative_ error, not absolute error. That is what floats provide. > If you want to use IEEE floats for arithmetic, then the onus is on you > to do the requisite numerical analysis to figure out how much error you > are introducing, and to inform your users of that fact. Yes of course. As you said, the bridge designer needs to know the possible errors in his calculations. Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Re: Weird issue with converting floats to integer
Colin Law wrote in post #970376: > On 23 December 2010 03:41, Marnen Laibow-Koser > wrote: >> 29114.9996362021192908287048 >> >> It bears repeating: never, ever use Floats for arithmetic. If you can't >> use fixed-point math, then use BigDecimal. > > I have to disagree here. I knew someone would. :) > I would rephrase it as _almost_ never use > Floats The one time when they would be appropriate is if you have a > large amount of arithmetic to perform. The sort of thing that might > occur in complex statistical analysis for example or engineering > calculations of some sort. On most (possibly all) computers floating > point consumes vastly less processor time to perform than BigDecimal. Then use fixed-point math. IEEE floats are 100% inappropriate for any sort of mathematical calculation. And who cares how fast they are if they're inaccurate? Inaccurate engineering calculations are worse than none at all -- do *you* want to drive over that bridge? :) If you want to use IEEE floats for arithmetic, then the onus is on you to do the requisite numerical analysis to figure out how much error you are introducing, and to inform your users of that fact. > This is a rare occurence in Rails apps Yes indeed! > I expect so I agree that for > most people Marnen's advice would be appropriate. > > Colin Best, -- Marnen Laibow-Koser http://www.marnen.org mar...@marnen.org -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Re: [Rails] Re: Weird issue with converting floats to integer
On 23 December 2010 03:41, Marnen Laibow-Koser wrote:
> TomRossi7 wrote in post #970207:
>> Any idea why this calculates the integer the way it does?
>>
>> irb> ("291.15".to_f * 100.0).to_i
>> => 29114
>
> Because of the vagaries of floating-point arithmetic:
> irb> ("291.15".to_f * 100.0) < 29115
> => true
> irb> printf "%.30f", ("291.15".to_f * 100.0)
> 29114.9996362021192908287048
>
> It bears repeating: never, ever use Floats for arithmetic. If you can't
> use fixed-point math, then use BigDecimal.
I have to disagree here. I would rephrase it as _almost_ never use
Floats The one time when they would be appropriate is if you have a
large amount of arithmetic to perform. The sort of thing that might
occur in complex statistical analysis for example or engineering
calculations of some sort. On most (possibly all) computers floating
point consumes vastly less processor time to perform than BigDecimal.
This is a rare occurence in Rails apps I expect so I agree that for
most people Marnen's advice would be appropriate.
Colin
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[Rails] Re: Saving records from multiple tables
> You say to use a transaction... I already am using a transaction! Sorry about that. I obviously didn't read carefully your post. > The issue is that if the person save succeeds and the client save > fails then the transaction is rolled back fine. However the person > record now has a person.id and subsequent code assumes that the record > is saved and tries to refind the record which of course does not > exist. > > I have got around this by saving the original value of the person.id > and then resetting it in the rescue clause but it is a bit messy. > > One other issue is that the only validation errors that get set are > the errors from the first record (person) that is saved so the user > may fix these up only to find new validation errors from the second > record... I have not tried before what you are trying to do but I will as soon as I have some time to spare. I don't understand why Rails would not clear the ID value of the record and reset the record in order for new_record? to return true. > I'm sure there must be a tidy way! If you use acceptes_nested_attributes_for and field_for the validations will work just like you want them to work, however you will need to change your form to be based on your person model, which based on what you have explained would be pretty much impossible since the person is selected in the form and you don't have a person object to base the form on. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Weird issue with converting floats to integer
TomRossi7 wrote in post #970346:
> I have currency information that I plan to store as an integer --
> ironically to avoid issues like this. The user input will always be
> in a decimal form. I'm thinking I will just do this ('291.15'.to_f *
> 100).round instead. That should round out any of the weird float
> issues.
As was said before by others in this thread, using the BigDecimal type
really is the most reliable, and simple, solution. Don't reinvent
the wheel with calculating in pennies and rounding etc. ...
In the migration, do this:
class AddAmountToPayment < ActiveRecord::Migration
def self.up
add_column :payments, :amount, :decimal, :precision => 12, :scale =>
2
end
...
This which will work automatically correct when reading
user input in your forms and when doing internal calculations:
$ rails c
Loading development environment (Rails 3.0.3)
001:0> Payment.columns.select{|c| c.sql_type =~ /decimal/}
=> [#]
002:0> payment = Payment.new(:amount => "291.15")
=> #>
003:0> payment.amount
=> #
004:0> payment.amount.to_s
=> "291.15"
...
019:0> (payment.amount - BigDecimal("291") - BigDecimal("0.15")).to_s
=> "0.0"
020:0> ((291.15 - 291) - 0.15).to_s
=> "-2.27318164292001e-14" # Rounding errors with float !!!
HTH,
Peter
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Re: [Rails] rails/ruby test - error report without line numbers
On 23 December 2010 17:40, Joshua S. wrote: > Hi all, > > I'm new to Rails and new to Rails testing. I have a few questions: > > First, the most important question. How do I get line numbers to be > reported with my errors when testing. Here is what I get back on a > typical error: > > > j...@josh-laptop:~/d/test$ ruby unit/line_test.rb -n test_update > Loaded suite unit/line_test > Started > E > Finished in 0.03 seconds. > > 1) Error: > test_update(LineTest): > NameError: undefined local variable or method `sdf' for > # > > > 1 tests, 0 assertions, 0 failures, 1 errors > > It is tough to debug without a line number and filename. From the code > samples I've seen, people generally get back a more verbose error > report. How do I enable this? I suggest running from your app root. What happens if you do ruby -I test test/unit/line_test.rb > > The next question is a small one. What is the difference between: > -ruby unit/line_test.rb That will only work if you run from the test folder, in fact I am surprised it works at all as I don't know how it finds the app environment. > -ruby test -I unit/line_test.rb That should be '-I test' not 'test -I' . It tells it to Include the folder test in the search path, so that require 'test_helper' at the top of the test file finds test/test_helper.rb > -ruby test unit/line_test.rb I don't think this would ever work. Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Devise restrict concurrent login
On Dec 22, 10:36 am, Hitesh Rawal wrote: > Hi, > > I am using devise 1.0.8, and I want to restrict concurrent login of user > i.e. same user should not be login from different browser or different > location if he already login from some where. > > and if he really wants to login forcefully then other side sessions for > that user should be clear and he should be logout from other sides. > > Any help would be greatly appreciated. Clearance does this: https://github.com/thoughtbot/clearance/wiki/concurrent-sign-in In principle you should be able to do the same thing in Devise (reset the authentication token on each signin). --Matt Jones -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] MySQL update BLOB
Hi I am trying to update a blob column from Ruby script into MySQL DB. The script is running on PC and DB on Linux host. The problem I see is that only 255 bytes of data being stored , is there any way to deal with that problem ? myconnect = Mysql::new(host, user, "", db) f = File.new(file_name,'rb') data = Mysql.escape_string(f.sysread(f.size)) update_sql = "update SHARE set COMPANY_LOGO = '"+ data + "' WHERE ID = 8982167534873685924"; stmt = myconnect.prepare(update_sql) stmt.execute() stmt.close myconnect.commit myconnect.close I also tried to leave a - '?' mark and than fill it with data, that one is not storing anything. -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Saving records from multiple tables
Thanks for reply pepe. You say to use a transaction... I already am using a transaction! The issue is that if the person save succeeds and the client save fails then the transaction is rolled back fine. However the person record now has a person.id and subsequent code assumes that the record is saved and tries to refind the record which of course does not exist. I have got around this by saving the original value of the person.id and then resetting it in the rescue clause but it is a bit messy. One other issue is that the only validation errors that get set are the errors from the first record (person) that is saved so the user may fix these up only to find new validation errors from the second record... I'm sure there must be a tidy way! My latest version which works but is not pretty is: def create begin #try to find existing person @person=Person.find(params[:person][:id]) rescue #they dont exist so create new @person=Person.new(params[:person]) end person_...@person.id @client=Client.new(params[:client]) begin Person.transaction do @person.save! @client.pers...@person @client.save! flash[:notice] = 'Client was successfully created.' redirect_to :action => 'edit', :id => @client.id end rescue #reset client and person to param values @person.id=person_id render :action => 'new' end end Cheers George -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Scheduling Plugin
On Dec 23, 12:00 pm, "ppgeng...@prevailhs.com" wrote: > On Dec 22, 11:12 am, Mike Porter wrote: > > > Hi, > > > We are looking for a calendar scheduling solution that supports > > recurring events. > > I haven't used it, but when I was filling idle time a little bit ago > the one I found that I liked the best > was:https://github.com/seejohnrun/ice_cube. > Its development seems a lot more active than the one you have, which > is generally pretty important to me when searching out gems, since > things in Rails move so fast. > > > Some specific requirements are that we need to be able to setup > > recurring events, then modify one of those events on a certain day by > > deleting it for example. > > > Basically, we want the back end for a Google Calender type > > functionality. > > Again, haven't used it but from the perusing it claims to do this > (from their github landing page): > > With ice_cube, you can specify (in order of precendence) > > Exception Dates - To specifically exclude from a schedule > Recurrence Dates - To specifically include in a schedule > Exception Rules - Rules on how to exclude recurring dates in a > schedule > Recurrence Rules - Rules on how to include recurring dates in a > schedule > I looked at IceCube a while back, and the biggest issue I had from an implementation perspective was that the DSL for building recurrence rules was awesome *but* there wasn't a clear path to build it from user input. calendar_fu is not quite as syntactically nice, but it seems more "user-ready", if you will. BTW, if you haven't checked out FullCalendar (http://arshaw.com/ fullcalendar/) you should - it's a pretty slick jQuery plugin to handle the *other* half of the calendar system. --Matt Jones -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Weird issue with converting floats to integer
On Dec 22, 10:34 pm, TomRossi7 wrote:
> Any idea why this calculates the integer the way it does?
>
> irb> ("291.15".to_f * 100.0).to_i
> => 29114
As Marnen's already pointed out, the issue is that the result is a
*tiny* bit smaller than 29115, so to_i truncates off the entire
fractional part and gives the wrong answer. In general, if you want to
convert a decimal to an integer the way most people would on paper,
use .round.to_i, which will correctly round the float to the nearest
integer.
On the currency issue, it's typically a good idea to avoid floating-
point throughout the process if you're trying to get a reliable fixed-
point result. Decimal columns are definitely a good idea for this sort
of thing.
--Matt Jones
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[Rails] Re: Difference between rake test:units and individually running ruby -I test test/unit/something_tes
Please quote when replying. daze wrote in post #970358: > Oh whoa okay thanks. I better make some changes now... :/ > > Can I use Shoulda w/ Rspec, or do I just use one over the other? I understand Shoulda is usable with RSpec. I've never actually used Shoulda on any of my projects, though. (And you *should* be able to do what you're doing with Shoulda and Test::Unit.) > And I should use this one https://github.com/rspec/rspec-rails, right? rspec-rails works with RSpec to provide some Rails-specific features. Please see http://rspec.info for more information. Best, -- Marnen Laibow-Koser http://www.marnen.org mar...@marnen.org -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Difference between rake test:units and individually running ruby -I test test/unit/something_tes
Oh whoa okay thanks. I better make some changes now... :/ Can I use Shoulda w/ Rspec, or do I just use one over the other? And I should use this one https://github.com/rspec/rspec-rails, right? -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Weird issue with converting floats to integer
Please quote when replying.
TomRossi7 wrote in post #970346:
> I have currency information that I plan to store as an integer --
> ironically to avoid issues like this. The user input will always be
> in a decimal form. I'm thinking I will just do this ('291.15'.to_f *
> 100).round instead. That should round out any of the weird float
> issues.
I think there are better ways of doing that -- such as using a DECIMAL
field in the database. Then no conversion is necessary and the data is
stored as fixed-point.
Or, if you'd rather store the data as an integral number of pennies
(though that may have i18n issues -- there are a few currencies, such as
the Kuwaiti dinar, that are subdivided into 1000, not 100), then a quick
way would be to normalize the string so that it contains 2 decimal
places (so "123" would become "123.00"), then drop the decimal point.
Best,
--
Marnen Laibow-Koser
http://www.marnen.org
mar...@marnen.org
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[Rails] Re: rails/ruby test - error report without line numbers
I posted an unpleasant solution on stackoverflow: http://stackoverflow.com/questions/4521203/ruby-tests-error-messages-dont-include-line-numbers-or-file-name/4521275#4521275 -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Weird issue with converting floats to integer
I have currency information that I plan to store as an integer --
ironically to avoid issues like this. The user input will always be
in a decimal form. I'm thinking I will just do this ('291.15'.to_f *
100).round instead. That should round out any of the weird float
issues.
On Dec 23, 12:51 pm, Marnen Laibow-Koser wrote:
> Please quote when replying.
>
> Jeff Burlysystems wrote in post #970344:
>
> > Or just change the way you calculate to get at the level of accuracy
> > that you want/need:
>
> > irb> ("291.15".to_f * 1000.0).to_i/10
> > => 29115
>
> That's incredibly silly IMHO. Besides, it will not always be the same
> for all values, will it? I think BigDecimal is the right answer here.
>
>
>
> > Jeff
>
> Best,
> --
> Marnen Laibow-Koserhttp://www.marnen.org
> mar...@marnen.org
>
> --
> Posted viahttp://www.ruby-forum.com/.
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[Rails] Re: Weird issue with converting floats to integer
Please quote when replying.
Jeff Burlysystems wrote in post #970344:
> Or just change the way you calculate to get at the level of accuracy
> that you want/need:
>
> irb> ("291.15".to_f * 1000.0).to_i/10
> => 29115
That's incredibly silly IMHO. Besides, it will not always be the same
for all values, will it? I think BigDecimal is the right answer here.
>
> Jeff
Best,
--
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http://www.marnen.org
mar...@marnen.org
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[Rails] Re: Weird issue with converting floats to integer
Or just change the way you calculate to get at the level of accuracy
that you want/need:
irb> ("291.15".to_f * 1000.0).to_i/10
=> 29115
Jeff
On Dec 22, 7:41 pm, Marnen Laibow-Koser wrote:
> TomRossi7 wrote in post #970207:
>
> > Any idea why this calculates the integer the way it does?
>
> > irb> ("291.15".to_f * 100.0).to_i
> > => 29114
>
> Because of the vagaries of floating-point arithmetic:
> irb> ("291.15".to_f * 100.0) < 29115
> => true
> irb> printf "%.30f", ("291.15".to_f * 100.0)
> 29114.9996362021192908287048
>
> It bears repeating: never, ever use Floats for arithmetic. If you can't
> use fixed-point math, then use BigDecimal.
>
>
>
> > Thanks,
> > Tom
>
> Best,
> --
> Marnen Laibow-Koserhttp://www.marnen.org
> mar...@marnen.org
>
> --
> Posted viahttp://www.ruby-forum.com/.
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[Rails] Re: rails/ruby test - error report without line numbers
Joshua S. wrote in post #970342: > Hi all, > > I'm new to Rails and new to Rails testing. I have a few questions: > > First, the most important question. How do I get line numbers to be > reported with my errors when testing. Probably by not using Test::Unit. :) It sucks. Try RSpec instead. Better API and much more readable error reports. Best, -- Marnen Laibow-Koser http://www.marnen.org mar...@marnen.org -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] rails/ruby test - error report without line numbers
Hi all, I'm new to Rails and new to Rails testing. I have a few questions: First, the most important question. How do I get line numbers to be reported with my errors when testing. Here is what I get back on a typical error: j...@josh-laptop:~/d/test$ ruby unit/line_test.rb -n test_update Loaded suite unit/line_test Started E Finished in 0.03 seconds. 1) Error: test_update(LineTest): NameError: undefined local variable or method `sdf' for # 1 tests, 0 assertions, 0 failures, 1 errors It is tough to debug without a line number and filename. From the code samples I've seen, people generally get back a more verbose error report. How do I enable this? The next question is a small one. What is the difference between: -ruby unit/line_test.rb -ruby test -I unit/line_test.rb -ruby test unit/line_test.rb I'd like to know the difference since I'm unable to use the command in the Rails Testing guide (third one). Thanks! Josh -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Difference between rake test:units and individually running ruby -I test test/unit/something_tes
daze wrote in post #970337:
> On Dec 22, 10:38pm, Marnen Laibow-Koser wrote:
>
>> Let's see your error messages. But why the heck are you defining an
>> object like this anyway? What are you trying to achieve?
>
> I'm trying to get a test for acts_as_list working. I've defined a
> method in test_helper that I use in my unit tests:
>
> # tests acts as list and default_scope :order => 'position'
> def self.should_act_as_list(options = {})
> klass = self.name.gsub(/Test$/, "").constantize # converts string
> to class
Nonononono. Don't do it that way. With RSpec, you'd write a custom
matcher class; I don't know if the same thing is done with Shoulda. But
you're getting too complex here and asking for trouble.
Please read about how custom should_* methods are supposed to be
written.
> context "acting as a list" do
> setup do # DON'T DO THIS???
> #...@instance = klass.all[0]
> end
What on earth is that for?
>
> should "have a position column" do
> instance = klass.first
> assert_not_nil instance.position, :message => "If you see me,
> check
> out the POSITION."
> end
That won't actually do what you want -- it will just make sure that
position is not nil. You'd have to check the columns array or use
respond_to? to do what you're trying for here.
>
> should "move objects correctly" do
> instance = klass.first
> instance.move_to_bottom
> assert_equal klass.all[-1], instance
> instance.move_higher
> assert_equal klass.all[-2], instance
> instance.move_to_top
> assert_equal klass.first, instance
> instance.move_lower
> assert_equal klass.all[1], instance
> end
Probably not necessary -- you're testing acts_as_list here, which is
presumably already well tested.
You are really doing things the hard way here. Learn a bit more about
Ruby's metaprogramming...
[...]
...and I'm sure that my test db is populated whenever I run my tests...
>
>> You shouldn't have to be sure of that beforehand; rather, you should be
>> using factories to create records for tests on the fly.
>
> I want my development and test dbs to be the same,
No you don't. You want the *schemas* to be the same, but you want only
specially crafted test data in your test DB.
> so I thought using
> the seeds.rb file - which in my case uses Factories
Your seeds file probably should not be using factories.
> - in conjunction
> with rake db:seed RAILS_ENV=test would be the best way. There are
> some things I want to have set names for, like sections - they'll
> always be Sports, News, etc. Other things like Articles, though, I
> generate in the seeds file en masse.
> Is my methodology totally wrong?
Yes.
> Should I be testing acts_as_list's
> functionality in a totally different way?
That's a separate question from seeds.
>
> I mean, are you saying I should create records in the "setup" method
> for each unit test rather than populate the db with that rake db:seed
> RAILS_ENV=test command?
Yes. Seeding the test database is never a good idea (this is why
fixtures are dangerous), because it becomes difficult to make sure your
tests don't share state, and also because it becomes difficult to keep
track of the assumptions you're making. Use factories to create only
the actual records you need for each test case (generally less than 10).
And do check out RSpec when you get a chance. :)
Best,
--
Marnen Laibow-Koser
http://www.marnen.org
mar...@marnen.org
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[Rails] Re: Scheduling Plugin
On Dec 22, 11:12 am, Mike Porter wrote: > Hi, > > We are looking for a calendar scheduling solution that supports > recurring events. I haven't used it, but when I was filling idle time a little bit ago the one I found that I liked the best was: https://github.com/seejohnrun/ice_cube. Its development seems a lot more active than the one you have, which is generally pretty important to me when searching out gems, since things in Rails move so fast. > Some specific requirements are that we need to be able to setup > recurring events, then modify one of those events on a certain day by > deleting it for example. > > Basically, we want the back end for a Google Calender type > functionality. Again, haven't used it but from the perusing it claims to do this (from their github landing page): With ice_cube, you can specify (in order of precendence) Exception Dates - To specifically exclude from a schedule Recurrence Dates - To specifically include in a schedule Exception Rules - Rules on how to exclude recurring dates in a schedule Recurrence Rules - Rules on how to include recurring dates in a schedule HTH, \Peter -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Difference between rake test:units and individually running ruby -I test test/unit/something_tes
On Dec 22, 10:38 pm, Marnen Laibow-Koser wrote:
> Let's see your error messages. But why the heck are you defining an
> object like this anyway? What are you trying to achieve?
I'm trying to get a test for acts_as_list working. I've defined a
method in test_helper that I use in my unit tests:
# tests acts as list and default_scope :order => 'position'
def self.should_act_as_list(options = {})
klass = self.name.gsub(/Test$/, "").constantize # converts string
to class
context "acting as a list" do
setup do # DON'T DO THIS???
#...@instance = klass.all[0]
end
should "have a position column" do
instance = klass.first
assert_not_nil instance.position, :message => "If you
see me, check
out the POSITION."
end
should "move objects correctly" do
instance = klass.first
instance.move_to_bottom
assert_equal klass.all[-1], instance
instance.move_higher
assert_equal klass.all[-2], instance
instance.move_to_top
assert_equal klass.first, instance
instance.move_lower
assert_equal klass.all[1], instance
end
end
end
My error messages just show this:
---
Loaded suite C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake/
rake_test_loader
Started
EE...
Finished in 0.171875 seconds.
1) Error:
test: An article acting as a list should have a position column.
(ArticleTest):
NoMethodError: undefined method `position' for nil:NilClass
/test/test_helper.rb:36:in `__bind_1293122683_953075'
2) Error:
test: An article acting as a list should move objects correctly.
(ArticleTest):
NoMethodError: undefined method `move_to_bottom' for nil:NilClass
/test/test_helper.rb:41:in `__bind_1293122683_953075'
3) Error:
test: acting as a list should have a position column. (PageTest):
NoMethodError: undefined method `position' for nil:NilClass
/test/test_helper.rb:36:in `__bind_1293122684_93700'
4) Error:
test: acting as a list should move objects correctly. (PageTest):
NoMethodError: undefined method `move_to_bottom' for nil:NilClass
/test/test_helper.rb:41:in `__bind_1293122684_93700'
5) Error:
test: A section acting as a list should have a position column.
(SectionTest):
NoMethodError: undefined method `position' for nil:NilClass
/test/test_helper.rb:36:in `__bind_1293122684_109325'
6) Error:
test: A section acting as a list should move objects correctly.
(SectionTest):
NoMethodError: undefined method `move_to_bottom' for nil:NilClass
/test/test_helper.rb:41:in `__bind_1293122684_109325'
33 tests, 28 assertions, 0 failures, 6 errors
rake aborted!
Command failed with status (1): [C:/Ruby187/bin/ruby.exe -I"lib;test"
"C:/R...]
---
..which is really the same error over and over again. My variable
"instance" becomes nil somehow.
>>> ...and I'm sure that my test db is populated whenever I run my tests...
> You shouldn't have to be sure of that beforehand; rather, you should be
> using factories to create records for tests on the fly.
I want my development and test dbs to be the same, so I thought using
the seeds.rb file - which in my case uses Factories - in conjunction
with rake db:seed RAILS_ENV=test would be the best way. There are
some things I want to have set names for, like sections - they'll
always be Sports, News, etc. Other things like Articles, though, I
generate in the seeds file en masse.
Is my methodology totally wrong? Should I be testing acts_as_list's
functionality in a totally different way?
I mean, are you saying I should create records in the "setup" method
for each unit test rather than populate the db with that rake db:seed
RAILS_ENV=test command?
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[Rails] [JOB] Jr. OS Developer, Greenwich, CT | 65k
This is a full time, on-site, salaried Junior Open Source Developer position located in Greenwich, CT paying $55,000 to $65,000 depending on experience + benefits. No telecommuting allowed. US Citizens or Green Card holders only please. Local candidates only. Thank you. Our boutique hedge fund client is offering a high profile opportunity for a junior open source professional. This position will function as the point person for day-to-day operations of the firm as it relates to Linux and MySQL engineering, coding in Ruby on Rails and/or PHP and general infrastructure support. Environment includes: Linux, MySQL, Ruby on Rails, PHP What’s in it For You? * Be part of the unique combination of open source and financial services * Autonomy to make critical IT decisions for this growing firm * Learn an industry typically tied to conventional technologies * Maintain a work/life balance while working in Greenwich, CT Required Qualifications: * Strong Computer Science competence in software and hardware * Development experience within Linux, MySQL, PHP, Ruby on Rails * Ability to multitask with new development, enhancement and infrastructure projects * Personal ambition to work in a startup environment * Proven motivation for technical growth and leadership If you are interested in this job, please submit your RESUME and SALARY requirements to beau[AT]open-source-staffing.com Thank you, Beau J. Gould -- Open Source Staffing http://opensourcestaffing.wordpress.com beau[AT]open-source-staffing.com -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: rvm, rails and sqlite
zoltan, thanks for help. i solved the problem by doing the following: rvm notes returns a list of modules that needed to be installed on linux. after that i gem install sqlite3-ruby and everything worked fine. -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] MongoMapper with ActiveModel - Rails 3
I'm trying out Rails 3 with MongoMapper for a new application, and have run into a bug when both MongoMapper::Document and ActiveModel::Validations are used in the same model, in this case job.rb. I can create a new model with the various validations I require, but when I attempt to save it I get: NoMethodError: undefined method `_run_before_save_callbacks' for # Google doesn't come up with much for this other than suggestions to rely only upon MongoMapper, which I would rather not do. So, if anyone can suggest a workaround it would be very useful. Thanks! -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Dynamic JavaScript -- was: Re: Re: Rails - escape_javascript without all the \n\n\n\n\n
Matteo Latini wrote in post #970246: > On Dec 22, 2010, at 6:05 PM, Marnen Laibow-Koser wrote: > >> >>> >> really doesn't belong. You wouldn't do that in Ruby; don't do it in JS. > Ruby is actually NOT like that... Actually everything we love about > rails > is thanks to dynamic code... That's not true at all. Most of it is due to metaprogramming, which is a very different thing than dynamically generating source code as text -- in fact, the point of Ruby's metaprogramming is that you *don't* have to dynamically generate source code to have dynamic behavior. Please get your facts straight. (There are a few spots deep in the Rails framework where source code is generated as strings, presumably for efficiency reasons. I regard these as either errors or performance hacks, and I would never attempt to do likewise in my own application code.) > >>> >>> Also, what do you mean by hidden div? >> >> A div with display: none in its style. >> >>> Do you mean you just jam >>> the data in it or use it for html templating? >> >> I don't understand what you're asking. > > Do you use html/js templating, or the hidden div is filled with > data? That's not an "or" question, is it? Or am I still not understanding what you mean? Best, -- Marnen Laibow-Koser http://www.marnen.org mar...@marnen.org Sent from my iPhone -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Please help with installing mysql gem to linux machine w/ xampp
Hello, check RVM because later you can have more problems http://rvm.beginrescueend.com/gemsets/basics/ I had the same problem, and met with this many times in mailing list. Better to avoid in early stage. Cheers, gezope On dec. 22, 21:44, "Dan W." wrote: > Solved! via:http://www.dolicapax.org/?p=11 > > -- > Posted viahttp://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Connection to database
Hi, - first check MySQL console, - then 'gem list m' - you can see here every gem listed starts with letter 'm' (or simply 'gem list') - then what other wrote here 'irb -r active_record'. If your Euby, Gem, Rails installed well, you have the necessary gems (see in gem list), then you can edit your Gemfile, then run bundle install, then edit .yaml. I think just give a try, you cannot loose much in early stage. Good luck, gezope n dec. 22, 08:29, Anandh Kumar wrote: > Hi everyone, > > Can someone suggest me is there any way in RoR to check for the database > connection without using database.yml. > > I need this because before editing database.yml file i want to check > whether mysql is installed in the given host. > > Any help would be greatly appreciated. > > -- > Posted viahttp://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: rvm, rails and sqlite
Hello Rail! I would use this method: - check RVM, set all thing you need, see also this part http://rvm.beginrescueend.com/gemsets/basics/ - is sqlite installed? is it running? - check if needed Ruby version installed and if you can switch, - gem version you need, - particular gem you need - this case sqlite3-ruby, - rails version you need, - finally .yaml Important: If you're on Unix, do NOT use 'sudo' when istalling a gem! (And always pay attention which gem and which Rails do you intall with a Ruby version.) If you have further problems, it is almost surely because of old gem. Others wrote on mailing list before that if nothing else worked, they uninstalled then reinstalled their gem, after that it worked fine. Please check answers before in this mailing lists, I met with these questions several times. (Or you can write me in private also, I had so long struggle with this.) If you have still problem can you list me here your: OS, rvm -v, ruby -v, rvm list, gem -v, gem list, rvm gemset list, please. Good luck, Zoltan n dec. 22, 20:40, Rail Shafigulin wrote: > peter thanks for the help. it turns out i needed to run > > rvm notes > > and there was a list of packages i need to install to successfully work > with rvm > > after that i ran > > sudo apt-get and everything started working > > your solution was similar to what i have done > > -- > Posted viahttp://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] has_many :through full stack help
I am trying to implement HMT for the first time and having a ton of trouble. I would like to be able to have the user check a checkbox and fill some extra fields for data input. I have tried so many iterations borrowed from different places I found on the web, none seem to work quite right. Essentially I have two models: 'practice' and 'system' where a practice can have one or many systems and I have a join model called 'implementation' where I also store some additional attributes such as who implemented the software and when. I have now rolled all my code back to the basics following the HABTM railscast. So right now when I check a checkbox (choosing the system) the join model (implementation) does get both system ID's but I cant figure out how to correctly add the additional 3 fields and have them stored when I save. I have included below what I think is relevant, I am beyond just hints at this point, I need help with the code itself - just cant get it to work. THANK YOU THANK YOU if you can help ---PRACTICE MODEL--- class Practice < ActiveRecord::Base attr_accessible :name, :tax_id, :location_ids, :employee_ids, :system_ids has_and_belongs_to_many :employees has_and_belongs_to_many :locations has_many :implementations has_many :systems, :through => :implementations validates_presence_of :name, :tax_id end -SYSTEM MODEL--- class System < ActiveRecord::Base attr_accessible :system_publisher, :system_name, :system_type, :system_version, :system_version_certified, :practice_ids has_many :implementations has_many :practices, :through => :implementations end -IMPLEMENTATION MODEL- class Implementation < ActiveRecord::Base attr_accessible :system_start_date, :system_stop_date, :system_implemented_by, :system_ids, :practice_ids belongs_to :system belongs_to :practice end PRACTICE CONTROLLER class PracticesController < ApplicationController #added for auto complete text (HABTM) #auto_complete_for :location, :name #auto_complete_for :employee, :first_name def index @practices = Practice.name_like_all(params[:search].to_s.split).ascend_by_name #...@practices = Practice.all end def show @practice = Practice.find(params[:id]) end def new @practice = Practice.new end def create @practice = Practice.new(params[:practice]) if @practice.save flash[:notice] = "Successfully created practice." redirect_to @practice else render :action => 'new' end end def edit @practice = Practice.find(params[:id]) end def update params[:practice][:employee_ids] ||= [] params[:practice][:location_ids] ||= [] #? # params[:practice][:system_ids] ||= [] #? @practice = Practice.find(params[:id]) if @practice.update_attributes(params[:practice]) flash[:notice] = "Successfully updated practice." redirect_to @practice else render :action => 'edit' end end def destroy @practice = Practice.find(params[:id]) @practice.destroy flash[:notice] = "Successfully destroyed practice." redirect_to practices_url end end PRACTICE _form <% form_for @practice do |f| %> <%= f.error_messages %> <%= f.label :name %> <%= f.text_field :name %> <%= f.label :tax_id %> <%= f.text_field :tax_id %> Employee(s): <% for employee in Employee.find(:all) %> <%= check_box_tag "practice[employee_ids][]", employee.id, @practice.employees.include?(employee) %> <%= employee.first_name %> <%= employee.last_name %> <% end %> Location(s): <% for location in Location.find(:all) %> <%= check_box_tag "practice[location_ids][]", location.id, @practice.locations.include?(location) %> <%= location.name %> <% end %> <% for system in System.find(:all) %> <%= check_box_tag "practice[system_ids][]", system.id, @practice.systems.include?(system) %> <%= system.system_name %> <% end %> <%= f.submit %> <% end %> -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Saving records from multiple tables
I see 2 things that might help you. On one hand you could use accepts_nested_attributes_for in your person model and fields_for in your view, then you would only need to save the person and that would take care of the client as well but based on what I see in your code that might not be feasible. On the other hand you could wrap the code for your save commands in a transaction and if there is any type of error during any of the saves Rails will roll back the transaction and you're golden. On Dec 22, 8:30 pm, giorgio wrote: > I hav page where I am saving a "client" record and a "person" record. > Sometimes the "person" is an existing record and sometimes it is a new > record. The "client" is always new. > Here is some code: > > class Person < ActiveRecord::Base > has_many :clients > > > class Client < ActiveRecord::Base > belongs_to :person > validates_presence_of :person_id > > > > def create > @client = Client.new(params[:client]) > begin #check if the person already exists > @person=Person.find(params[:person][:id]) > rescue #otherwise create new person > @person=Person.new(params[:person]) > end > @client.pers...@person > begin > Client.transaction do > @person.save! > @client.pers...@person > @client.save! > flash[:notice] = 'Client was successfully created.' > redirect_to :action => 'edit', :id => @client.id > end > rescue > render :action => 'new' > end > end > > Im not really sure what the best way and order to do the saves is. > If I try to save client first then it wont have a person_id yet and > will fail validation. > If I save the person first and then the client fails validation for > some other reason the code sort of works in that it rolls back but the > @person record has an id set even though the save failed. It also > appears to return false for @person.new_record? > > Is there a tidier way to do this? I have tried @client.person.save and > various other combinations but it is not really clear what actually > gets saved. > > Any comments appreciated. > > George -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Re: [Rails] saravanan
On Thu, Dec 23, 2010 at 12:02 PM, Saravanan Ravi wrote: > Hi, > > I am new to ruby on rails.. i have one dought in select tag > i created table name with products(id,title,price,date) > Your question is not clear. What do you mean by > I loaded all title name from mysql databse. > Where should the corresponding price be displayed?? > but if i select any title means the corresponding price should be display > what can i do for that..plz help me.. > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-t...@googlegroups.com. > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscr...@googlegroups.com > . > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Does using :render => :partial breaks the MVC separation during an ajax call
I am using this function below which updates a div element with a partial in an ajax call. def publish render :update do |page| page.replace_html 'my_div', :partial => 'my_partial' end end Does this approach breaks the MVC separation. If Yes, how can we avoid it? Thanks Deepak Kumar INDIA -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] saravanan
Hi, I am new to ruby on rails.. i have one dought in select tag i created table name with products(id,title,price,date) I loaded all title name from mysql databse.but if i select any title means the corresponding price should be display what can i do for that..plz help me.. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Authlogic Rails 3
I think you should add the following line in your gem file: gem "rails3-generators" It is required to add your required generators UP4B LLC http://up4b.com -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Active Record Relations and Nesting
Hello, I am looking to create a rails app that will model and display related nodes. I am just beginning to dive into active record and I was wondering if the following pesudo code would work? class NodeLink < ActiveRecord::Base belongs_to :node # foreign key - node_id (recorded as primary_node_id) belongs_to :node # foreign key - node_id (recorded as secondary_node_id) end class Node < ActiveRecord::Base has_many :nodes, :through => :node_links end In essence this would create something that looks like the following. [Node One] | | | | [Node Two] [Node Three] | | [Node Four] Where the node links are represented by the lines and the nodes themselves are enclosed in brackets. And this pattern could be continued indefinite through different variations of nodes and links. Any help or advice you could give would be great. Thanks, Devin Morin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] No such file to load error
Hi I am using ruby with selenium to automate my test. But when I execute my test case in eclipse IDE I am getting the following error :29:in `require': no such file to load -- test1 (LoadError) from :29:in `require' from D:/Juhi_Project/.metadata/.plugins/org.rubypeople.rdt.testunit/ruby/RemoteTestRunner.rb:301:in `' My source code is require "test/unit" require "rubygems" gem "selenium-client" require "selenium/client" class Test1 < Test::Unit::TestCase def setup @verification_errors = [] @selenium = Selenium::Client::Driver.new \ :host => "localhost", :port => , :browser => "*chrome", :url => "http://www.tutorialspoint.com/";, :timeout_in_second => 60 @selenium.start_new_browser_session end def teardown @selenium.close_current_browser_session assert_equal [], @verification_errors end def test_test1 @selenium.open "/ruby/ruby_hashes.htm" @selenium.click "link=Ruby Date & Time" @selenium.wait_for_page_to_load "3" @selenium.type "q", "module" @selenium.click "//inp...@name='sitesearch' and @value='www.tutorialspoint.com']" @selenium.click "sa" @selenium.click "link=Ruby Ranges" @selenium.wait_for_page_to_load "3" @selenium.click "link=Ruby Iterators" @selenium.wait_for_page_to_load "3" end end When I run this from command line it,s working fine. I have ruby1.9, ruby-gems1.3.7,RSpec2.3.0,rails3.0.3. Thanks in advance -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: Problem with Selenium RC with Rails
Hi Your code is missing something. Try this one require "test/unit" require "rubygems" require "selenium" class MyTestClass < Test::Unit::TestCase def setup @verification_errors = [] @selenium = Selenium::Client::Driver.new( "localhost", , "*firefox", "http://tutorialspoint.com/";, 30 ) @selenium.start end def teardown @selenium.stop unless $selenium assert_equal [], @verification_errors end def test_task @selenium.open "/ruby/ruby_hashes.htm" @selenium.click "link=Ruby Date & Time" @selenium.wait_for_page_to_load "3" @selenium.type "q", "module" @selenium.click "//inp...@name='sitesearch' and @value='www.tutorialspoint.com']" @selenium.click "sa" @selenium.click "link=Ruby Ranges" @selenium.wait_for_page_to_load "3" @selenium.click "link=Ruby Iterators" @selenium.wait_for_page_to_load "3" end end It is working fine in my system. -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Re: "File not found: lib" when installing rails-3.0.0
Solution: $ cd /usr/lib/ruby/gems/1.8/gems/rails-3.0.3/ $ ls . bin if you have only "bin" directory: $ sudo mkdir lib $ sudo gem install rails Sebastian -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] [ANN] WiceGrid 0.6 for Rails 2 and 3.0.0.pre1 for Rails 3 are released
Hello all, WiceGrid version 0.6 for Rails 2 and 3.0.0.pre1 for Rails 3 are released. WiceGrid is a Rails grid plugin. A more detailed blog post: http://leikind.org/2010/12/23/better-late-than-never Examples online: http://grid.leikind.org/ Source code Rails 2: http://github.com/leikind/wice_grid Source code Rails 3: https://github.com/leikind/wice_grid/tree/rails3 Best regards, Yuri Leikind -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] One form, multiple models, custom validation
Hi everyone, I hope someone can help me solve this problem. I have a model called Project with :has_many => :tasks. In the new Project form i allow the creation of 1 to n tasks on the fly thanks to accepts_nested_attributes_for, where the task model has some validations that block the creation of the new project if the required fields are not correct. This works just fine as it is supposed to work, but here's the problem: At least one task needs to have some fields not empty, otherwise the project should not be created. It can be any of the tasks but it's imperative that at least one of them has those attributes, for the other tasks these attributes are not required. Is there a way of doing that without strange hacks? Thanks in advance for your help -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Re: [Rails] Difference between rake test:units and individually running ruby -I test test/unit/something_test.rb ?
On 23 December 2010 03:17, daze wrote: > Here's my issue: running ruby -I test test/unit/something_test.rb for > each of my unit tests works perfectly. > However, running rake test:units brings errors in all of them - some > object becomes nil for some reason. > > Why might this be happening? > > Specifics: the object that is successfully not nil when I run the unit > tests one-by-one but becomes nil when I do rake test:units is defined > like this... > > klass = self.name.gsub(/Test$/, "").constantize > instance = klass.first You could use ruby-debug to break into the test at the point of failure and inspect the data and see what is going on. If you have not used ruby-debug have a look at the Rails Guide on debugging to see how. Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Re: [Rails] Dynamic JavaScript -- was: Re: Re: Rails - escape_javascript without all the \n\n\n\n\n
On Dec 22, 2010, at 6:05 PM, Marnen Laibow-Koser wrote: > Please quote when replying. > > Matteo Latini wrote in post #969994: >> On Dec 21, 2010, at 10:03 PM, Marnen Laibow-Koser wrote: >> >>> >> What do you exactly mean by dynamic... > > By "dynamic JavaScript", I mean JavaScript generated on the fly with RJS > or ERb rather than an unchanging static .js file. > >> Can you provide some examples >> in which having dynamic JS can lead to design/development issues? > > I think the use of dynamic JS complicates things needlessly. It also > prevents the client from caching the JS file. In general, source code > (behavior) should be static and data should be dynamic. This is true on > the server side and I believe it's also true on the client side. > > Dynamic code is also harder to test and debug. > >> >> Would you classify JSON as dynamic? In some way, json is just >> like javascript variables. > > I would classify JSON as data. Since data can be dynamic, I think it is > entirely appropriate for an Ajax request (or whatever) to return dynamic > JSON, HTML, XML, CSV, or whatever. Usually this would then be processed > by a static JavaScript file. > > Again, my principle is: dynamic data, static source code/behavior. > Rails' dynamic JS crams the data in with the source code, where it > really doesn't belong. You wouldn't do that in Ruby; don't do it in JS. Ruby is actually NOT like that... Actually everything we love about rails is thanks to dynamic code... >> >> Also, what do you mean by hidden div? > > A div with display: none in its style. > >> Do you mean you just jam >> the data in it or use it for html templating? > > I don't understand what you're asking. Do you use html/js templating, or the hidden div is filled with data? > > Best, > -- > Marnen Laibow-Koser > http://www.marnen.org > mar...@marnen.org > > Sent from my iPhone > > -- > Posted via http://www.ruby-forum.com/. > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-t...@googlegroups.com. > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Re: [Rails] Re: Dreamhost Rails upgrade troubles
On 22 December 2010 22:18, Brian Wolk wrote: > Thanks for the replies, everyone. > > I tried what Water suggested: > > $ rake rails:freeze:edge RELEASE=2.3.5 I don't think you want the edge. If you want to freeze to the version of rails that the app is currently using then just rake rails:freeze:gems should do it I think. Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
[Rails] Barry Flower is out of the office
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