[Rails] Re: RUBY ON RAILS MIGRATION

[Matthew Higgins]

I highly recommend against composite keys. The composite gem breaks in every 
new rails version, and has broken edge cases.

Stick with an integer primary key, and an integer for foreign keys.

I wrote the foreigner gem. It expects that you are following the Rails 
conventions. It has no effect on your application's logic, it simply 
prevents bad data from getting into the database. The primary feature of it 
is that it creates a correct schema.rb, which is essential for my testing.

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[Rails] Faye server with rails 3.1

[ADNAN TAHIR]

I want to use Faye on production server. how can I start faye server
automatically or as a daemon process.

Because when I start faye server using SSH it shutdown as i close ssh
connection. Please guide me its really urgent.

I can run faye server on local but how I can rub this on live site.

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[Rails] fulltime job oppurtunity

[idealforce jobs]

We have multiple full time positions with our Client for talented
Cloud Infrastructure Engineers and Architects.
They are starting a large scale full life cycle project and are
interviewing candidates within various disciplines.
Underlying architecture will be a LAMP stack with CSS/AJAX/JavaScript
based UI. Most part of the other developments will be carried out
using technologies such as Java, JMS, Ruby On Rails, Python and
MySQL.

Job location can be Austin, TX or San Jose, CA.

Kindly respond to this email with your resume if you are interested
learning more about these positions.

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[Rails] Re: file uploading controller

[Kapil K.]

you told to me this solution

 If you're using Paperclip or CarrierWave, just add two separate file
 attributes to your base model, following the usual instructions for
 either. If you want to be able to attach N number of files of any
 format to a base model, consider the nested_form Gem by Ryan Bates,
 and be sure to watch his Railscast on Complex Forms 1  2 to make
 sure you grasp what the gem is making for you.

but,i am the fresher please told me how to add two separate file 
attributes in our model? kindly give me the solution with small code?

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[Rails] RJS error rails 1.2.3 + firefox 4 and above

[Sathiyaraj Gurusamy]

Hi,

In my application I used in admin module to expand and collpase
functionality  using ajax(link_to_remote) method. It's working fine in
mozilla 3 and below version..

But when I using in mozilla 4 expand functinality was working fine but
collapse are not work, it's just 'wrinkls'.

My code is like below
tr id=%= content_element_id %
%= link_to_collapse(:school, content_element_id,
icon_for_backend_collapse) %
%= link_to_expand(:school, content_element_id, icon_for_backend_expand)
%

def link_to_expand(model_name, content_element_id, link_text)
link_to_remote(link_text,
:url = {
  :controller =
manage/schools,
  :action = :show,
  :id =
params[:id],
  :update =
content_element_id,
  :partial=
/manage/schools/expanded_table_row
},
:alt = 'expand')
  end

def link_to_collapse(model_name, content_element_id, link_text)
link_to_remote(link_text,
:url = {
  :controller =
manage/schools,
  :action  = :show,
  :id =
params[:id],
  :update=
content_element_id,
  :partial =
/manage/schools/collapsed_table_row
},
:alt = 'collapse')
  end

any help regarding this would be appreciated..

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[Rails] Re: How to use Oniguruma in ruby 1.9.2?

[nishant]

So what are the changes i have make in my ruby 1.8.7 syntax to parse
my regular expressions for ruby 1.9.2 , Can you provide me some kind
of link.



On Aug 17, 11:54 pm, Frederick Cheung frederick.che...@gmail.com
wrote:
 On Aug 17, 3:26 pm, nishant nishantnig...@gmail.com wrote:

  Hello Guys ,

  Can anyone explain me how to use Oniguruma in ruby 1.9.2 , I guess in
  ruby 1.9.2 its a default library so there is no need to install
  externally?

  I was using  Oniguruma::ORegexp.new(  in ruby 1.8.7 .

 Onigurama is the regular expression engine for 1.9.x - /foo/ will use
 onigurama

 Fred

  Thanks
  Nishant



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Re: [Rails] Best Rails install for production.

[Eric Björkvall]

apache + mod_fcgi - I get better performance than when I tried apache/passenger 
and apache/mongrel.

I'm running this set up under FreeBSD, CentOS 5.x and Mac OS X 10.6

Can be a bit tricky to set up..

Cheers,
Eric

On 14 aug 2011, at 12:45, Frederick Cheung wrote:

 
 
 On Aug 14, 10:33 am, Yaroslav Govorunov govoru...@gmail.com wrote:
 Hello!
 
 Which Ruby on Rails installation scenario is the best for performance
 and durability in production:
 - Ubunthu + Apache + Passanger
 - Ubunthu + Nginx + Unicorn
 - Ubunthu + Apache + Mongrel
 - Any other option?
 
 
 Well you've also got nginx + passenger. If you move to jruby then you
 get a bunch of other deploy options too.
 Personally I'm very happy with apache + passenger.
 
 Fred
 And could someone provide links to some best practice or guidelines to
 install Rails in production?
 
 Thank you!
 
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[Rails] Re: how to work in group?

[Alexey Muranov]

Rodrigo,

take a look at Distributed Workflow section in Git Community Book:
http://book.git-scm.com/3_distributed_workflows.html

It is assumed there however that everybody in your project has access to 
the
full code.

Alexey.

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Re: [Rails] Re: why callback does not work

[Colin Law]

On 17 August 2011 15:31, Angelo Cordova acord...@gmail.com wrote:

 Debugging will tell you whether the callback is being called.  If you
 assign the result of Storage.create! to a variable and break after
 that then you will be able to inspect that object.

 I tried this

  def before_create
     debugger
    stg = Storage.create!(:product_id =
 self.product_id, :current_quantity
  = self.quantity, :stg_data = purchase.prc_data)
 end

 and when I inspect the variable stg I got  stg = nil as result

That is not surprising since you have broken *before* the line that
allocates stg.

Colin

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Re: [Rails] Getting started problems

[Colin Law]

On 17 August 2011 17:45, Murtuza murtuzafi...@gmail.com wrote:
 I am a newbie to Ruby on Rails.
 I created a new rails project, but when i go to that directory and do
 rails server to start the server, it asks me whether i want to
 overwrite config/initializations/session_store.rb

Which version of rails are you using?  rails -v

Colin


 Due to which I am unable to see the normal index.html, when I type
 localhost:3000 on my browser.

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[Rails] Re: autoloading LoadError: Expected known_ip.rb to define KnownIp

[Alexey Muranov]

I couldn't make it work with Admin:: namespace and submitted a bug 
report:

https://github.com/rails/rails/issues/2572

Please comment.

Alexey.

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[Rails] Multiple Errors with RRD and Rake

[Walid CH]

Hello all,

I am trying to install the SequreISP application (link below) but I'm
facing an error that I cannot resolve and any help is much appreciated.

The application I am trying to install is:
https://github.com/sequre/sequreisp

Here's some information about my system:

OS: Centos 5.4 (Final)

uname -a
Linux gateway 2.6.18-164.el5 #1 SMP Thu Sep 3 03:33:56 EDT 2009 i686
i686 i386 GNU/Linux

ruby 1.9.2p290
Rails 2.3.11
gem version 1.8.7
rake version 0.9.2

The command that's giving me errors is:
rake db:migrate RAILS_ENV=production --trace

The errors are:
rake/rdoctask is deprecated.  Use rdoc/task instead (in RDoc 2.4.2+)
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
Could not open library 'rrd': rrd: cannot open shared object file: No
such file or directory. Could not open library 'librrd.so': librrd.so:
cannot open shared object file: No such file or directory
/usr/local/lib/ruby/gems/1.9.1/gems/ffi-1.0.9/lib/ffi/library.rb:75:in
`block in ffi_lib'
/usr/local/lib/ruby/gems/1.9.1/gems/ffi-1.0.9/lib/ffi/library.rb:54:in
`map'
/usr/local/lib/ruby/gems/1.9.1/gems/ffi-1.0.9/lib/ffi/library.rb:54:in
`ffi_lib'
/usr/local/lib/ruby/gems/1.9.1/gems/rrd-ffi-0.2.7/lib/rrd/wrapper.rb:44:in
`singletonclass'
/usr/local/lib/ruby/gems/1.9.1/gems/rrd-ffi-0.2.7/lib/rrd/wrapper.rb:41:in
`class:Wrapper'
/usr/local/lib/ruby/gems/1.9.1/gems/rrd-ffi-0.2.7/lib/rrd/wrapper.rb:6:in
`module:RRD'
/usr/local/lib/ruby/gems/1.9.1/gems/rrd-ffi-0.2.7/lib/rrd/wrapper.rb:2:in
`top (required)'
/usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.11/lib/active_support/dependencies.rb:184:in
`require'
/usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.11/lib/active_support/dependencies.rb:184:in
`require'
/usr/local/lib/ruby/gems/1.9.1/gems/rrd-ffi-0.2.7/lib/rrd.rb:4:in `top
(required)'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.18/lib/bundler/runtime.rb:68:in
`require'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.18/lib/bundler/runtime.rb:68:in
`block (2 levels) in require'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.18/lib/bundler/runtime.rb:66:in
`each'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.18/lib/bundler/runtime.rb:66:in
`block in require'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.18/lib/bundler/runtime.rb:55:in
`each'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.18/lib/bundler/runtime.rb:55:in
`require'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.18/lib/bundler.rb:120:in
`require'
/opt/sequreisp/deploy/sequreisp/config/boot.rb:116:in `load_gems'
/usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.11/lib/initializer.rb:164:in
`process'
/usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.11/lib/initializer.rb:113:in
`run'
/opt/sequreisp/deploy/sequreisp/config/environment.rb:13:in `top
(required)'
/usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.11/lib/active_support/dependencies.rb:182:in
`require'
/usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.11/lib/active_support/dependencies.rb:182:in
`block in require'
/usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.11/lib/active_support/dependencies.rb:547:in
`new_constants_in'
/usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.11/lib/active_support/dependencies.rb:182:in
`require'
/usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.11/lib/tasks/misc.rake:4:in
`block in top (required)'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/task.rb:205:in
`call'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/task.rb:205:in
`block in execute'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/task.rb:200:in
`each'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/task.rb:200:in
`execute'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/task.rb:158:in
`block in invoke_with_call_chain'
/usr/local/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/task.rb:151:in
`invoke_with_call_chain'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/task.rb:176:in
`block in invoke_prerequisites'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/task.rb:174:in
`each'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/task.rb:174:in
`invoke_prerequisites'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/task.rb:157:in
`block in invoke_with_call_chain'
/usr/local/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/task.rb:151:in
`invoke_with_call_chain'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/task.rb:144:in
`invoke'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/application.rb:112:in
`invoke_task'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/application.rb:90:in
`block (2 levels) in top_level'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/application.rb:90:in
`each'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2/lib/rake/application.rb:90:in
`block in top_level'

[Rails] I18n and routing: bug?

[kuraga...@mail.ru]

Hello! It seems I have the same bug in Rails 3.0.9...

https://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/4896

Why? Was it a bug? Is it a bug?

Thank you!

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[Rails] how render to file

[Shukhrat Tursunov]

Hi

I have a question
when you open page from browser
application renders the page and gives it to the browser
how do that in action and save render page in html file

Thanks!

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[Rails] multiple fields_for behavior

[Matt Smith]

With the following code and result below, why does the cars_attributes
index (i.e. name=owner[cars_attributes][0][color]) increment in
the second fields_for block when only one car is built? Shouldn't it
stay the same because only one car was built?

Is this standard behavior? If so, what is the standard way to force
both indexes to be 0 (or increment together if there are more
records)?

This is an over-simplified example. The reason I want two fields_for
blocks is due the arrangement of partials in another complex form.

Much thanks!

Matt

# owners_controller.rb
# ...
  def new
@owner = Owner.new
@owner.cars.build

respond_to do |format|
  format.html # new.html.erb
  format.xml  { render :xml = @owner }
end
  end
# ...

# owner.rb
class Owner  ActiveRecord::Base
  has_many :cars
  accepts_nested_attributes_for :cars
end

# car.rb
class Car  ActiveRecord::Base
  belongs_to :owner
end

# new.html.erb
%= form_for(@owner) do |f| %
  % if @owner.errors.any? %
div id=error_explanation
  h2%= pluralize(@owner.errors.count, error) % prohibited
this owner from being saved:/h2

  ul
  % @owner.errors.full_messages.each do |msg| %
li%= msg %/li
  % end %
  /ul
/div
  % end %

  div class=field
%= f.label :name %br /
%= f.text_field :name %
  /div

  h2Cars/h2

  %= f.fields_for :cars do |car_fields| %
div class=field
  %= car_fields.label :color %br /
  %= car_fields.text_field :color %
/div
  % end %

  ===

  %= f.fields_for :cars do |car_fields| %
div class=field
  %= car_fields.label :plate %br /
  %= car_fields.text_field :plate %
/div
  % end %

  div class=actions
%= f.submit %
  /div
% end %

# http://localhost:8081/owners/new
# ...
  h2Cars/h2


div class=field
  label for=owner_cars_attributes_0_colorColor/labelbr /
  input id=owner_cars_attributes_0_color
name=owner[cars_attributes][0][color] size=30 type=text /
/div

  ===


div class=field
  label for=owner_cars_attributes_1_platePlate/labelbr /
  input id=owner_cars_attributes_1_plate
name=owner[cars_attributes][1][plate] size=30 type=text /
/div
# ...

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[Rails] Re: How to use Oniguruma in ruby 1.9.2?

[Frederick Cheung]

On Aug 18, 7:58 am, nishant nishantnig...@gmail.com wrote:
 So what are the changes i have make in my ruby 1.8.7 syntax to parse
 my regular expressions for ruby 1.9.2 , Can you provide me some kind
 of link.

I think it's all backwards compatible - your existing regular
expressions should still work, but you now also have access to more
features. Do you have any particular examples of things that aren't
working as you expect?

Fred

 On Aug 17, 11:54 pm, Frederick Cheung frederick.che...@gmail.com
 wrote:







  On Aug 17, 3:26 pm, nishant nishantnig...@gmail.com wrote:

   Hello Guys ,

   Can anyone explain me how to use Oniguruma in ruby 1.9.2 , I guess in
   ruby 1.9.2 its a default library so there is no need to install
   externally?

   I was using  Oniguruma::ORegexp.new(  in ruby 1.8.7 .

  Onigurama is the regular expression engine for 1.9.x - /foo/ will use
  onigurama

  Fred

   Thanks
   Nishant

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Re: [Rails] Faye server with rails 3.1

[Chris Mear]

On 17 Aug 2011, at 23:31, ADNAN TAHIR wrote:

 I want to use Faye on production server. how can I start faye server
 automatically or as a daemon process.
 
 Because when I start faye server using SSH it shutdown as i close ssh
 connection. Please guide me its really urgent.
 
 I can run faye server on local but how I can rub this on live site.

You may get a better response on the Faye mailing list:

http://groups.google.com/group/faye-users

But in general if you want to run a process automatically as a daemon, you want 
to add it to your system's init scripts, and/or put it under the control of 
some kind of monitoring system (e.g. Monit).

As a temporary quick-and-dirty fix, you can keep a shell session on the server 
active by running it inside a terminal multiplexer like GNU Screen or tmux. 
This is not a long-term solution, though.

Chris

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Re: [Rails] how to work in group?

[Chris Mear]

On 17 Aug 2011, at 19:23, Rodrigo Ruiz wrote:

 hi, I've started developing websites with rails about 3 months ago,
 and now I need to work with for people at the same project.
 How can I do that?
 
 first, I can't allow access of the entire code to everyone for security 
 purpose;
 second, it seems to me that rails works in a very coupled way, I don't
 understand how I would be able to split the project in parts so I can
 delegate one part to each member of the team.

It is possible to break up a Rails app (e.g. push bits of functionality out to 
gems/engines/etc.) but unless those bits of functionality are genuinely 
self-contained and well-defined then it's likely to be a hassle, and/or you'll 
end up having to do a bunch of speculative architecture design up-front. I 
would seriously consider whether it is worth this extra burden.

There was a similar thread on this topic a few months ago:

https://groups.google.com/forum/#!topic/rubyonrails-talk/QeyLmeaR9bM

Chris

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[Rails] Re: How to use Oniguruma in ruby 1.9.2?

[nishant]

I changed Oniguruma::ORegexp.new with Regexp.new

for example contents.to_s.gsub!(regular_expression, replace text)
but it returns a nil value and does`nt seem to working as expected

like (\/p)\s+(p) for removing paragraph tags form the content

and i keep recieving this error message in the terminal

/home/user/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-2.3.11/lib/
active_support/dependencies.rb:406: warning: nested repeat operator +
and ? was replaced with '*': /li(?:\s+)?(.*?)(?:\s+)?\/li/



On Aug 18, 2:55 pm, Frederick Cheung frederick.che...@gmail.com
wrote:
 On Aug 18, 7:58 am, nishant nishantnig...@gmail.com wrote:

  So what are the changes i have make in my ruby 1.8.7 syntax to parse
  my regular expressions for ruby 1.9.2 , Can you provide me some kind
  of link.

 I think it's all backwards compatible - your existing regular
 expressions should still work, but you now also have access to more
 features. Do you have any particular examples of things that aren't
 working as you expect?

 Fred



  On Aug 17, 11:54 pm, Frederick Cheung frederick.che...@gmail.com
  wrote:

   On Aug 17, 3:26 pm, nishant nishantnig...@gmail.com wrote:

Hello Guys ,

Can anyone explain me how to use Oniguruma in ruby 1.9.2 , I guess in
ruby 1.9.2 its a default library so there is no need to install
externally?

I was using  Oniguruma::ORegexp.new(  in ruby 1.8.7 .

   Onigurama is the regular expression engine for 1.9.x - /foo/ will use
   onigurama

   Fred

Thanks
Nishant



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Re: [Rails] Re: file uploading controller

[Walter Lee Davis]

On Aug 18, 2011, at 2:30 AM, Kapil K. wrote:


you told to me this solution


If you're using Paperclip or CarrierWave, just add two separate file
attributes to your base model, following the usual instructions for
either. If you want to be able to attach N number of files of any
format to a base model, consider the nested_form Gem by Ryan Bates,
and be sure to watch his Railscast on Complex Forms 1  2 to make
sure you grasp what the gem is making for you.


but,i am the fresher please told me how to add two separate file
attributes in our model? kindly give me the solution with small code?


Assuming you are using Paperclip, and you have a Foo model, and you  
have read the ReadMe on the Paperclip GitHub page, you would do this:


rails generate paperclip Foo image_one
rails generate paperclip Foo image_two
rake db:migrate

Now you have the proper bits in your database. If you are using  
attr_accessible in your model (please say yes) then you have to  
add :image_one, :image_two, to the beginning of the list of accessible  
attributes.


Add

has_attached_file :image_one, :styles = {}
has_attached_file :image_two, :styles = {}

to your model.

In your view's form_for call, add :html = { :multipart = true }  
before the do, so it looks like this:


%= form_for @foo, :html = { :multipart = true } do |f| %

In your form body, add a field for each image:

%= f.file_field :image_one %
%= f.file_field :image_two %

And you're done. Files will upload to your public/system/foos/ 
image_[one|two]/original/ folder, off the top of my head. You can  
configure EVERYTHING, just read the Wiki.


Walter



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[Rails] Re: why callback does not work

[Angelo Cordova]

  I tried this

   def before_create
      debugger
     stg = Storage.create!(:product_id =
  self.product_id, :current_quantity
   = self.quantity, :stg_data = purchase.prc_data)
  end

  and when I inspect the variable stg I got  stg = nil as result

 That is not surprising since you have broken *before* the line that
 allocates stg.

 Colin

If I break after that line... stg does not appear

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[Rails] rails 3.1 select multiple with serialized data

[AppleII717]

In my Users model I have

serialize :roles

Letting it default to yml

I enter roles as a text array. e.g.,
  u.roles = [member,scorer]

It displays as an array

@user.roles.type  returns Array

All is fine except if I try to use the select form helper to input the
values with multiple = true

I've tried several version and I can't get the set values to trigger
selected in the options tag.

 f.select(:roles, options_for_select(role_options,@user.roles),{},
{:multiple = true, :size = 5})
 f.select(:roles, role_options,{},{:multiple = true, :size = 5})

(role_options is a helper method that return an array of valid role
options.

I had this working under 3.0, but using a kludge to put roles into a
json hash.

Steve




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[Rails] Re: rails 3.1 select multiple with serialized data

[AppleII717]

Happens every time - I find the problem after the post.

In the rails 3.0 version I capitalized the roles.
In the rails 3.1 version I lower cased the roles.

One of the few things I hate about ruby/rails case sensitivity.


On Aug 18, 9:05 am, AppleII717 sa...@mac.com wrote:
 In my Users model I have

 serialize :roles

 Letting it default to yml

 I enter roles as a text array. e.g.,
   u.roles = [member,scorer]

 It displays as an array

 @user.roles.type  returns Array

 All is fine except if I try to use the select form helper to input the
 values with multiple = true

 I've tried several version and I can't get the set values to trigger
 selected in the options tag.

  f.select(:roles, options_for_select(role_options,@user.roles),{},
 {:multiple = true, :size = 5})
  f.select(:roles, role_options,{},{:multiple = true, :size = 5})

 (role_options is a helper method that return an array of valid role
 options.

 I had this working under 3.0, but using a kludge to put roles into a
 json hash.

 Steve

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Re: [Rails] Re: rails 3.1 select multiple with serialized data

[Walter Lee Davis]

Add a before_save filter and downcase/upcase/titleize them for  
uniformity!


Walter

On Aug 18, 2011, at 10:22 AM, AppleII717 wrote:


Happens every time - I find the problem after the post.

In the rails 3.0 version I capitalized the roles.
In the rails 3.1 version I lower cased the roles.

One of the few things I hate about ruby/rails case sensitivity.


On Aug 18, 9:05 am, AppleII717 sa...@mac.com wrote:

In my Users model I have

serialize :roles

Letting it default to yml

I enter roles as a text array. e.g.,
  u.roles = [member,scorer]

It displays as an array

@user.roles.type  returns Array

All is fine except if I try to use the select form helper to input  
the

values with multiple = true

I've tried several version and I can't get the set values to trigger
selected in the options tag.

 f.select(:roles, options_for_select(role_options,@user.roles),{},
{:multiple = true, :size = 5})
 f.select(:roles, role_options,{},{:multiple = true, :size = 5})

(role_options is a helper method that return an array of valid role
options.

I had this working under 3.0, but using a kludge to put roles into a
json hash.

Steve


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[Rails] How to pass an ERB template as string?

[Rodrigo Alves Vieira]

Hello everyone, I'm using a gem called aws-ses and I'm trying to sophisticate 
the email I am sending, here is the code currently:

ses = AWS::SES::Base.new(:access_key_id = 'foo', :secret_access_key = 'bar')


email ={
  :to = #{subscriber.email},
   :source = '#{ag.name}' no-reply@#{ag.domain}',
   :subject = 'Hello',
   :html_body = h1#{subscriber.name}/h1
}

ses.send_email email

However, instead of passing a hard coded string to the :html_body key, I want 
to pass a template in app/views/layouts/mail.html.erb

Is there any method/Rails helper that lets me convert an entire template to 
string and pass to the html_body key?

P.S: If you have already used this gem and know a/another way to help me please 
do it ;)

Thanks in advance, everyone!

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Re: [Rails] Re: why callback does not work

[Colin Law]

On 18 August 2011 14:50, Angelo Cordova acord...@gmail.com wrote:
  I tried this

   def before_create
      debugger
     stg = Storage.create!(:product_id =
  self.product_id, :current_quantity
   = self.quantity, :stg_data = purchase.prc_data)
  end

  and when I inspect the variable stg I got  stg = nil as result

 That is not surprising since you have broken *before* the line that
 allocates stg.

 Colin

 If I break after that line... stg does not appear

what do you mean it does not appear?

Remember that you can inspect data and evaluate expressions in the debugger.

Colin

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Re: [Rails] String column - Text, 255 limit?

[Rob Biedenharn]

On Aug 17, 2011, at 7:38 PM, Philip Hallstrom wrote:



On Aug 17, 2011, at 3:32 PM, John Hinnegan wrote:

So I'm using a column in my database to serialize a hash of extra  
data about an object.  Stuff I'd want when displaying, but not  
anything else I care to have structured access to in my DB.  I  
recently started storing an URL in field, so I decided I'd better  
change the column type from string (which it probably should never  
have been) to text.


I did so with a standard migration

def self.up
change_column :my_table, :related_data, :text
end

Looking in my schema.db file, I see:

  t.text related_data, :limit = 255

I think I know how to fix it, but want some reinforcement I'm on  
the right track before I spend the time.  Looks like what I really  
need is:


def self.up
 add_column :my_table, :new_related_data, :text
 # copy data from related_data to new_related_data
 remove_column :my_table, :related_data
 rename_column :my_table, :new_related_data, :related_data
end

yes?


Or just...

change_column :my_table, :related_data, :text, :limit = 123456789   
# or whatever you think is large enough


-philip



I think that the limit can be 2048 as I recall that is the max for a  
URL.  I can't find a reference to back that up at the moment, but I  
think that this is what the sitemap specification (see Google) allows,  
too.


-Rob

Rob Biedenharn  
r...@agileconsultingllc.com http://AgileConsultingLLC.com/
r...@gaslightsoftware.com   http://GaslightSoftware.com/

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[Rails] Namespaces and nested resources

[Ajaxy]

Hello!

I'm developing online game (Heroes fighting against Clans) and i'm
planning next structure of my app: i've got top-level resources Heroes
(profiles of supermembers) and Clans (profiles of groups of members).
So
i've got both HeroesController and ClansController.

What i wanna do is give Heroes and Clans' leaders opportunities to add
Content Resources to their profile area or to the clan  area,
respectively. Content Resources is different singular resources such
as Gallery, Blog, Shop and others. So Gallery has many Photoalbums
(that
have many Photos), Blog has many Posts, Shop has goods and so on.

Hero can turn on/off each of singular Content Resources, and after
that
he get its full functionallity on his own profile page
The same thing with Clans - clan leader can connect in settings area
for
example Forum.

So the question is how to organize this structure well. I think about
that way:

/controllers
HeroesController
ClansController
/blog/
Blog::BlogsController
Blog::PostsController
/gallery/
Gallery::GalleriesController
Gallery::PhotoalbumsController
Gallery::PhotosController
/models
Hero
Clan
module Blog
/blog/
Blog::Blog
Blog::Post
module Gallery
/gallery/
Gallery::Gallery
Gallery::Photoalbums
Gallery::Photos

And routes:

  resources :clans do
scope :module = 'blog' do
  resource :blog do
resources :posts
  end
end

scope :module = 'gallery' do
  resource :gallery do
resources :photoalbums
resources :photos
  end
end
  end

  resources :heroes do
 .. the same things...
  end

And here i've got a first problem - when i run
/clan/1/blog/posts and even /clan/1/blog/posts/1/edit it all goes
quite
well,
but it fails in simple /clan/1/blog saying: [No route matches
{:action=show, :controller=clubs}]

May be i'm doing everything wrong. May be i should choose another way
instead of nested resources and/or namespaces, because i've heard it
may be a bad practice :(

I'm new in Rails, and i'm sorry for maybe easy questions :)

Grateful for any help, suggestions and advises!
Thank you!

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[Rails] Trivial SQL query - how to do it with ActiveRecord?

[timeon]

Hi,

I've been trying to read ActiveRecord tutorials etc. but haven't
figured out how to get the information I want. Let's say I have a
users who own one to many bookshelves and some of these bookshelves
contain books. Now I would like to get a list of books that belong to
user named Timeon:

SELECT books.name FROM books, shelves, users WHERE
books.shelve_id=shelves.id AND shelves.owner_id=users.id AND
users.name='Timeon';

The models would be something like this (from the top of my head, may
not be correct):

Class User  ActiveRecord::Base
  has_many :book_shelves
end

Class BookShelve  ActiveRecord::Base
  belongs_to :user
  has_many :books
end

Class Book  ActiveRecord::Base
  belongs_to :book_shelves
end

So, how to get a list of Book objects that belong to user named Timeon
with a single line of code? Most examples I've seen first find the
user, then they list the shelves etc. but I would expect something
this trivial to be simple to achieve with a single call.

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[Rails] How to disable rails from serving images in rails 3.1

[Diego Bernardes]

Hello!!

How can i disable the rails 3.1 in development mode from serving images?
I have some pages with tons of images and sometimes the page takes more
than 10 seconds to load...

Thanks!

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[Rails] Rails 3.1rc6 assets / precompile change

[sreid]

I'm currently using Rails 3.1rc5, and deploy with capistrano. During
deploy, I precompile the assets on the server using assets:precompile
after deploy:symlink.

I noticed that group :assets gems in my gemfile were being included
in my production application processes (and adding a lot of memory
usage), even though they are only used during the deploy.

It looks like this change to rails 3.1rc6 -
https://github.com/rails/rails/commit/0c57ae102f938b8f3d14d7cc37ab15b87bdaa4f5
- mean that assets will now not be included in production by default.

Does this mean though that I need to precompile on my development PC
first before deploying with capistrano, or will it also work as I
currently have it - precompiling on the server ? I.e. will the asset
gems still be available on the server, but just used for the
precompile ?

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[Rails] Re: Rails 3.1rc6 assets / precompile change

[sreid]

Correct url above should be 
https://github.com/rails/rails/commit/0c57ae102f938b8f3d14d7cc37ab15b87bdaa4f5

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[Rails] How to navigate between view using select

[kevin ng'eno]

Hi, im new to rails and I got a mind boggling issue.

I have a select form populated with Institutes names e.g University of
Yale. These records are obtained from the Institute ActiveRecord.The
institutes table has a many to many relationships with the course table.

My application should work such that when you select a certain institute
using a select() component and press the button proceed to view courses
available for the institute chosen. This will take you to a new page
with the courses.

My problem is that i don't know how i will store selected institute id
and use it to select specific courses using the many to many
relationships.. below are my code snippets
==
/app/controller/Course.rb

class CourseController  ApplicationController
layout 'standard'
   def list
   @courses = Course.find(:all)
   end
   def show
  @course = Course.find(params[:id])
   end
   def new
  @courses = Course.new
  @institutes = Institute.find(:all)
 # @cfilters = CourseFilter.find(params[:id])
   end
   def create
  @course = Course.new(params[:course])
  if @course.save
redirect_to :action = 'list'
  else
flash[:warning]=Failed to 
@courses = Course.find(:all)
render :action = 'new'
  end
   end
end

==
/app/views/institute/list.html.erb

% if @institutes.blank? %
pThere are not any institutes currently in the system./p
% else %
puSelect your chosen Institution/u/p
form action=/course/show method=submit id = course_id
%= select (submit, name, Institute.find(:all).collect {|c| [
c.name, c.id ] }, :prompt = Select Institute, :onchange =
this.form.submit();)%

%= submit_tag Proceed To Courses%
/form
%end%

p%= link_to Add new College, {:action = 'new' }%/p
===
/app/views/courses/list.html.erb
% if @courses.blank? %
pThere are not any courses currently in the system./p
% else %
puSelect your chosen Course/u/p
ul id=courses
% Course.find(params[:id]).each do |c| %
li%= link_to c.course_name, :action = show, :id = c.id %/li
% end %
/ul
%= collection_select(:course,:id,@courses,:id,:course_name) %/p
/ul--
form action=/unit/list method=submit
%= submit_tag Proceed %
/form
% end %
p%= link_to Add new College, {:action = 'new' }%/p
===

Would really need you help people. Thanx

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[Rails] need 2 lines of code in Ruby

[himanshu soni]

Tell us which school/organization you wish to support

The attached image is what the second line should look like -
http://tinypic.com/r/2rehzlx/7

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[Rails] Re: How to navigate between view using select

[Charles Otieno]

Got the same problem myself and I'm yet to crack it!

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[Rails] Re: why callback does not work

[Angelo Cordova]

   I tried this

    def before_create
       debugger
      stg = Storage.create!(:product_id =
   self.product_id, :current_quantity
    = self.quantity, :stg_data = purchase.prc_data)
   end

   and when I inspect the variable stg I got  stg = nil as result

  That is not surprising since you have broken *before* the line that
  allocates stg.

  Colin

  If I break after that line... stg does not appear

 what do you mean it does not appear?

 Remember that you can inspect data and evaluate expressions in the debugger.

 Colin

When I used debugger the first time (in the line before the callback)
I chose option var local and I got

stg = nil

But when I use debugger after that line I get this

blk = #Proc:0xc302b34@/usr/local/ruby/lib/ruby/gems/1.9.1/gems/
activerecord-3.0.9/lib/active_record/callbacks.rb:277
  halted = false
  key = nil
  name = nil
  result = true
  value = 88

 And if I try to inspect stg I get

var instance stg
NameError Exception: undefined local variable or method `stg' for
#DetailPurchase:0xb4d3054

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Re: [Rails] How to navigate between view using select

[Chirag Singhal]

There are few issue in this:
1. You should not be doing sql queries directly from views, instead set the
instance variable in controller and pass it to view.
2. Your form is submitting to /course/show, instead it should be
/course/list
3. Controller name should be plural, you have got the name as Course
Controller, but the corresponding views directory is courses
4. To follow along with rails standards, you should be name of your list
action should be index
5. Your select field should set institute, id instead of select,
name
6. Course list action should filter the course list based on the institute
id, something like Course.find_by_institute_id(params[:institute][:id])

Fix these and maybe you will figure out a solution.


Chirag
http://sumeruonrails.com



On Thu, Aug 18, 2011 at 10:10 PM, kevin ng'eno li...@ruby-forum.com wrote:

 Hi, im new to rails and I got a mind boggling issue.

 I have a select form populated with Institutes names e.g University of
 Yale. These records are obtained from the Institute ActiveRecord.The
 institutes table has a many to many relationships with the course table.

 My application should work such that when you select a certain institute
 using a select() component and press the button proceed to view courses
 available for the institute chosen. This will take you to a new page
 with the courses.

 My problem is that i don't know how i will store selected institute id
 and use it to select specific courses using the many to many
 relationships.. below are my code snippets
 ==
 /app/controller/Course.rb

 class CourseController  ApplicationController
layout 'standard'
   def list
   @courses = Course.find(:all)
   end
   def show
  @course = Course.find(params[:id])
   end
   def new
  @courses = Course.new
  @institutes = Institute.find(:all)
 # @cfilters = CourseFilter.find(params[:id])
   end
   def create
  @course = Course.new(params[:course])
  if @course.save
redirect_to :action = 'list'
  else
flash[:warning]=Failed to 
@courses = Course.find(:all)
render :action = 'new'
  end
   end
 end

 ==
 /app/views/institute/list.html.erb

 % if @institutes.blank? %
 pThere are not any institutes currently in the system./p
 % else %
 puSelect your chosen Institution/u/p
 form action=/course/show method=submit id = course_id
 %= select (submit, name, Institute.find(:all).collect {|c| [
 c.name, c.id ] }, :prompt = Select Institute, :onchange =
 this.form.submit();)%

 %= submit_tag Proceed To Courses%
 /form
 %end%

 p%= link_to Add new College, {:action = 'new' }%/p
 ===
 /app/views/courses/list.html.erb
 % if @courses.blank? %
 pThere are not any courses currently in the system./p
 % else %
 puSelect your chosen Course/u/p
 ul id=courses
 % Course.find(params[:id]).each do |c| %
 li%= link_to c.course_name, :action = show, :id = c.id %/li
 % end %
 /ul
 %= collection_select(:course,:id,@courses,:id,:course_name) %/p
 /ul--
 form action=/unit/list method=submit
 %= submit_tag Proceed %
 /form
 % end %
 p%= link_to Add new College, {:action = 'new' }%/p
 ===

 Would really need you help people. Thanx

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Re: [Rails] Re: why callback does not work

[Colin Law]

On 18 August 2011 17:48, Angelo Cordova acord...@gmail.com wrote:

   I tried this

    def before_create
       debugger
      stg = Storage.create!(:product_id =
   self.product_id, :current_quantity
    = self.quantity, :stg_data = purchase.prc_data)
   end

   and when I inspect the variable stg I got  stg = nil as result

  That is not surprising since you have broken *before* the line that
  allocates stg.

  Colin

  If I break after that line... stg does not appear

 what do you mean it does not appear?

 Remember that you can inspect data and evaluate expressions in the debugger.

 Colin

 When I used debugger the first time (in the line before the callback)
 I chose option var local and I got

 stg = nil

 But when I use debugger after that line I get this

 blk = #Proc:0xc302b34@/usr/local/ruby/lib/ruby/gems/1.9.1/gems/
 activerecord-3.0.9/lib/active_record/callbacks.rb:277
  halted = false
  key = nil
  name = nil
  result = true
  value = 88

  And if I try to inspect stg I get

 var instance stg
 NameError Exception: undefined local variable or method `stg' for
 #DetailPurchase:0xb4d3054

I have occasionally had problems with the debugger statement at the
end of a method with it apparently dropping out of the method before
breaking, so that variables are no longer accessible.  Add an extra
line after the debugger statement (i=0 for example) to give it
something to break on.

On a separate issue, looking at the message you get, are you using
ruby 1.9.1?  If so then upgrade to 1.9.2 or go back to 1.8.7, ruby
1.9.1 does not work reliably with rails.  This may have nothing to do
with your problem.

I note that you still have not answered my question (unless I missed
it), have you any validations on the Storage model?

Colin

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[Rails] Re: Validates attributes that aren't even being changed

[Leonel *.*]

I temporarily solved the username attribute by not letting the user 
update the username. So the validation only works :on = :create
So username attribute validation problem solved.

Now I got the password validation problem. Ok, it seems the problem was 
kinda of obvious but I couldn't see it.

In user.rb I have this...
-
validates :password,
:presence = true,
:length = { :minimum = 6, :maximum = 20, :message = 'should have 
between 6 to 12 characters' },
:confirmation = true
--

but the password attribute doesn't even exist because it's a virtual 
attribute. The real attributes are password_hash and password_salt.

So the Change Password and Password Reset controllers and forms work 
well.

When I go to the Edit User page, user can edit...
* first name
* last name
* email
* there is NO Password field

PROBLEM: So when the user tries to update his, let's say, first name and 
clicks on Save Changes, I get a password length and password can't be 
blank validation error.

I'm searching for something like rails validation exception to solve 
this problem. If you have any suggestions please let me know.

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Re: [Rails] need 2 lines of code in Ruby

[Colin Law]

On 18 August 2011 16:52, himanshu soni soni.himanshu...@gmail.com wrote:
 Tell us which school/organization you wish to support

 The attached image is what the second line should look like -
 http://tinypic.com/r/2rehzlx/7

Is there a question there somewhere?

Colin

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[Rails] Re: How to navigate between view using select

[kevin ng'eno]

Chirag Singhal wrote in post #1017338:
 There are few issue in this:


Thanx alot Chirag, let me try out your hints . Will get back to you

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[Rails] Rails 3 - Production Environment

[CSK Vasanth]

Hello Everyone,

I need some help related to the below requirements:

- I need to setup production environment without installing Ruby or
Rails or other related gems into it.
I did accomplish the same using JRuby, bundler and warbler plugin. And
deployed the WAR file into Apache Tomcat server. But now I have to do
this without JRuby  Apache Tomcat.

- I have to setup Apache with Passenger module in production
environment. So is there any way to just install and configure apache
and passenger alone, and no need to install Ruby or Rails or any other
gems?

- Performance wise - which is better among the following options:
1) Apache + Passenger (using Ruby)
2) Ngnix + Passenger (using Ruby)
3) Apache + Mongrel cluster (using Ruby)
4) Tomcat using JRuby
5) Glassfish + Apache using JRuby

- I personally found in development machines that Ruby (webrick) is
faster than JRuby (webrick). Am I correct? Will it be the same in
Production environment too?

Also, let me know if there is any tutorial for installing and
configuring Apache  Passenger module.

Thanks in advance.

Regards,
Vasanth

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[Rails] Re: Validates attributes that aren't even being changed

[Leonel *.*]

Can someone help me complete this piece of code?

I'm thinking about using :unless because the only place where I wouldn't 
like the password validation is in the Edit User page.

validates :password,
:presence = true,
:length = { :minimum = 6, :maximum = 20, :message = 'should have
between 6 to 12 characters' },
:confirmation = true,
:unless = 

I tried...
:unless = params[:controller] == 'users' and params[:action] == 'edit'

but I got the following error...
Routing Error
undefined local variable or method `params' for #Class:0x7f92ca83a518

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[Rails] difference between %= and %

[Pepe Sanchez]

Hi all

what is the difference between %=  and % in a view file?


thanks

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[Rails] Re: How to disable rails from serving images in rails 3.1

[Diego Bernardes]

Nvm, the problem was with mongoid!

MODEL PRELOADING

In order to properly set up single collection inheritance, Mongoid needs
to preload all models before every request in development mode. This can
get slow, so if you are not using any inheritance it is recommended you
turn this feature off.
config.mongoid.preload_models = false

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[Rails] namespaces as scope :module

[Ajaxy]

Hello!

I've got Gallery resource with namespaces:
/gallery/galleries_controller.rb
/gallery/albums_controller.rb
/gallery/photos_controller.rb
and models Gallery::Gallery, Gallery::Album and Gallery::Photo in my /
models/gallery/ folder

I want my Gallery work like standart resource: site.com/galleries/2/
albums/3, but being incapsulated in own folders, so i write in
routes.rb this rules:

scope :module = gallery do
  resources :galleries do
resources :albums
  end
end

And then i've trouble using, i.e.

@gallery = Gallery::Gallery.find(1);
redirect_to(@gallery);
 undefined method `gallery_gallery_url'
-- but why `gallery_gallery_url' when i expect just `gallery_url' like
it is in rake routes?

next time i write
% @gallery = Gallery::Gallery.find(1); %
%= form_for @gallery do |f| %
 undefined method `gallery_galleries_path'
-- i need to manualy add :url option:
%= form_for @gallery, :url = galleries_path do |f| %

What's wrong? What i have to do with this issue?
Thanks for any help!

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[Rails] Math with table rows

[Cássio Godinho]

Lets supose I have a User table, and on this table I have height, weight and
result rows.
In a form I input height and weight values and want to multiply those two
values and store on the resulta row on database. I was trying something like
that

  def criar
@user = User.new(params[:user])
@result = @user.height * @user.weight
@user.result = @result

But its not working, what am i doing wrong?

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Re: [Rails] Math with table rows

[Hassan Schroeder]

2011/8/18 Cássio Godinho cassiopgodi...@gmail.com:

 In a form I input height and weight values and want to multiply those two
 values and store on the resulta row on database. I was trying something like
 that
       def criar
         @user = User.new(params[:user])
         @result = @user.height * @user.weight
         @user.result = @result
 But its not working, what am i doing wrong?

What does not working mean?

-- 
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http://about.me/hassanschroeder
twitter: @hassan

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[Rails] How to get all urls of my application?

[Rodrigo Alves Vieira]

Hello everyone, how can I get all available urls of my application, I don't 
mean rake routes I mean some code that returns literally all the urls (or paths)

for example

let's say it's a blog application, with this code I should be able to see:

/
/about
/contact
/posts
/posts/2011-08-18
/posts/2011-08-18/blah-blah
/posts/2011-08-15/lalala
/posts/2011-08-18/foo
/posts/2011-08-18/bar
/posts/2011-08-18/baz 

Well, this is the point.. do you have any idea on how to do it?

A appreciate any reply!

Thanks in advance.

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[Rails] Re: how render to file

[Shukhrat Tursunov]

done.

example how do that.

  after_filter :write_file

  def index
  end

  protected

  def write_file
File.open('public/test.html', 'w+') do |f|
  f.write response.body
end
  end

On Aug 18, 5:41 am, Shukhrat Tursunov shuhra...@gmail.com wrote:
 Hi

 I have a question
 when you open page from browser
 application renders the page and gives it to the browser
 how do that in action and saverenderpage in htmlfile

 Thanks!

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[Rails] Re: why callback does not work

[Angelo Cordova]

 On a separate issue, looking at the message you get, are you using
 ruby 1.9.1?  If so then upgrade to 1.9.2 or go back to 1.8.7, ruby
 1.9.1 does not work reliably with rails.  This may have nothing to do
 with your problem.


I'm using ruby 1.9.2

 I note that you still have not answered my question (unless I missed
 it), have you any validations on the Storage model?

 I have validations for presence (product_id, current_quantity and
stg_data)
and for numericality (current_quantity)

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[Rails] Fedena 2.1 is released

[Unni Koroth]

The long-awaited release of Fedena 2.1 is now available at Project
Fedena. There are lot of new features added and all the identified
issues of version 2.0 is resolved in this release.

Official Blogpost - http://blog.foradian.com/fedena-21-is-released
Github - https://github.com/projectfedena/fedena_v2.1
Release notes - http://projectfedena.org/changelog
Related Downloads - http://projectfedena.org/download
Installation Instructions - http://projectfedena.org/install

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[Rails] LDAP Models

[Beerlover88]

I'm running Rails 3.09/Ruby 1.8.7, and I'm looking for some advice on
how to create models from LDAP servers.  I see there is an ActiveLDAP
gem floating around out there, but it's Rails 3 support is only for
3.1rc4.  Specifically, I'm trying to compare my user base on one LDAP
server to another LDAP server.

Thanks,

Eric

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[Rails] Re: why callback does not work

[Angelo Cordova]

 On a separate issue, looking at the message you get, are you using
 ruby 1.9.1?  If so then upgrade to 1.9.2 or go back to 1.8.7, ruby
 1.9.1 does not work reliably with rails.  This may have nothing to do
 with your problem.


No, I'm using ruby 1.9.2

 I note that you still have not answered my question (unless I missed
 it), have you any validations on the Storage model?

Finally, I found the problem. It was a validation on storage, I
removed it, and everything works perfect

Thanks for your help, thanks for your patience

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[Rails] Re: Opening a folder for file selection

[Barney]

Could you provide a code example of the connection between the links
and an action that sends the file?  I now have a list of links on a
page but clicking them gives:
Firefox doesn't know how to open this address, because the protocol
(c) isn't associated with any program.
Thanks,
  Barney


On Aug 17, 8:43 pm, Barney bsper...@gmail.com wrote:
 Thanks, I'll give those steps a try.
 The name is leftover from earlier work and should be changed, as
 you've pointed out.
      Barney

 On Aug 17, 7:52 pm, 7stud -- li...@ruby-forum.com wrote:







  One way:

  1) Get thefilenames: Dir.foreach or Dir.glob.
  2) Create a view that provides a list oflinks, one for each file.
  3) Thelinksconnect to another action, which sends the file.

  Why is your action named 'upload'?  How about 'download'?

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[Rails] Re: difference between %= and %

[Stefano]

And you couldnt just try that out yourself? :D

On Aug 18, 7:39 pm, Pepe Sanchez li...@ruby-forum.com wrote:
 Hi all

 what is the difference between %=  and % in a view file?

 thanks

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[Rails] newbie: handling a method error

[Dorijan Jelincic]

Hi...
I have 2 tables, connected with belongs_to and has_one and everything
works ok until I get one entry in base where I dont have set id of
belongs_to entry. How can I prevent it(except that that all entry has
ids :) or dont print anithing in view?

this is what I am talking about:
I have customer and it has firm_id
trable firm has id and name

so when I try to print
customer.firm.name I got error.
Thank you

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Re: [Rails] How to get all urls of my application?

[Walter Lee Davis]

On Aug 18, 2011, at 2:25 PM, Rodrigo Alves Vieira wrote:

Hello everyone, how can I get all available urls of my application,  
I don't mean rake routes I mean some code that returns literally all  
the urls (or paths)


for example

let's say it's a blog application, with this code I should be able  
to see:


/
/about
/contact
/posts
/posts/2011-08-18
/posts/2011-08-18/blah-blah
/posts/2011-08-15/lalala
/posts/2011-08-18/foo
/posts/2011-08-18/bar
/posts/2011-08-18/baz

Well, this is the point.. do you have any idea on how to do it?


Assuming you have linked all of these, you could crawl the site with  
wget, pipe the filenames to cat and build a text file. What form are  
you looking for these paths? Do you need a text file, or do you want  
to generate a sitemap or something like that?


Walter



A appreciate any reply!

Thanks in advance.

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[Rails] Conflicts with Scriptaculous and jQuery

[Shandy Nantz]

Hi all,

I have this rails website that works fine, but I wanted to experiment
with jQuery a little so I added all the necessary file to my JavaScript
folder and, well, all hell broke lose in that adding jQuery causes
Scriptaculous/Prototype not to work while jQuery works kinda-fine. Doing
a search on Google and even here, the overwhelming majority of people
suggested the solution of using jQuery.noConflict(); to relinquish
control of the $ variable back to Prototype. However, after struggling
with this for almost a full day I can say with 100% certainty that this
is not the cause of my problem.

I also tried:

(function($) {
$(document).ready(function(){
.
});
})(jQuery);

with no luck. I get no JavaScript errors, but what I do get is a line
under my text_boxes, which use auto_complete, which usually only happens
when I have multiple tags with the same id on the same page, but I know
for a fact that is not the problem here.

So I am really at a loss, just wondering if anybody has had this same
issue and how did they fix it? I'm using Rails 2.3.4 and jQuery 1.5.2.
Thanks,

-S

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[Rails] Re: Conflicts with Scriptaculous and jQuery

[Shandy Nantz]

I fixed it. Here was the problem.

In my JavaScript include lines I had this:

%= javascript_include_tag  :defaults, 'scriptaculous', 'prototype',
'effects', 'controls', 'date-picker', 'jquery', 'jquery.min',
'application' %

script
   // Don't take this out as long as you are using the jQuery and
   Scriptacous
   libraries together. They don't play well together.
   var $j = jQuery.noConflict();
/script

And I changed it to this:

%= javascript_include_tag 'jquery', 'jquery.min' %

script
   // Don't take this out as long as you are using the jQuery and
   Scriptacous
   libraries together. They don't play well together.
   var $j = jQuery.noConflict();
/script

%= javascript_include_tag  :defaults, 'scriptaculous', 'prototype',
'effects', 'controls', 'date-picker', 'application' %

Apparently the relinquishing of this all import variable $ must be done
after I include the necessary jQuery script files but before I include
the Sciptaculous/Prototype script files.

Hopefully this helps someone.

-S

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Re: [Rails] newbie: handling a method error

[Colin Law]

On 18 August 2011 21:58, Dorijan Jelincic dma...@gmail.com wrote:
 Hi...
 I have 2 tables, connected with belongs_to and has_one and everything
 works ok until I get one entry in base where I dont have set id of
 belongs_to entry. How can I prevent it(except that that all entry has
 ids :) or dont print anithing in view?

 this is what I am talking about:
 I have customer and it has firm_id
 trable firm has id and name

 so when I try to print
 customer.firm.name I got error.

%= customer.firm.name if customer.firm %

Or possibly better to provide a method, say firm_name, of Customer
that tests self.firm and returns the name or nil or maybe a default
string if that is what you want, then do

%= customer.firm_name %

Colin

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[Rails] Re: difference between %= and %

[7stud --]

Tim Shaffer wrote in post #1017353:
 %= prints the contents of the tag,

Well, it never meant that.  %= tells ruby to print the result of the 
expression between the tags.  For instance,

%= 2+2 %

would not print '2 + 2', it would print '4'.  But even the result of 
the expression isn't an entirely accurate description--because in rails 
3 you write:

%= form_for(@user) do |f| %

which doesn't  fit that description.   In ruby, 'form_for(@user) do |f|' 
isn't an expression--it's the first half of a loop/block, so it's an 
incomplete expression.   In other words, in ruby if you wrote:

result = some_func(arg) do |x|

you would get an error.  Maybe its best to think of %= form_for() as an 
exception to the rule?

One example of how %= and % differ is this:

% 3.times do |i| %
divloop: %= i %/div
% end %

The % tags just execute the ruby code and don't enter any text onto the 
page, which causes ruby/.erb to loop over the div tag 3 times.  The 
%= tag inside the loop prints the value of the variable i.  So you get:

divloop: 0/div
divloop: 1/div
divloop: 2/div

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Re: [Rails] newbie: handling a method error

[Hassan Schroeder]

On Thu, Aug 18, 2011 at 2:51 PM, Colin Law clan...@googlemail.com wrote:

 customer.firm.name I got error.

 %= customer.firm.name if customer.firm %

 Or possibly better to provide a method, say firm_name, of Customer
 that tests self.firm and returns the name or nil or maybe a default
 string if that is what you want, then do

 %= customer.firm_name %

FWIW, I found Avdi Grimm's e-book on this topic well worth the price:

  http://exceptionalruby.com/

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[Rails] Re: Example of work with mongo

[Alexey Petrushin]

More examples:

Save any pure Ruby object (also complex  nested) in MongoDB 
https://github.com/alexeypetrushin/mongo_db

+ driver API enhancements (100% backward-compatible with original API), 
makes API more friendly  handy, no extra abstraction or complexities 
introduced, all things are exactly the same as in MongoDB.

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[Rails] Re: namespaces as scope :module

[Ajaxy]

Spent a few hours looking through RoR sources and seems like i found
some kind of solution:
If we override property @_model_name in our models we can strip out
Gallery:: from it:

class Gallery::Gallery  ActiveRecord::Base
  @_model_name = Gallery.model_name(self)
end

And in module:

module Gallery
  def self.table_name_prefix
'gallery_'
  end

  def self.model_name(klass)
@_model_name = ActiveModel::Name.new(klass, false,
klass.name.sub(Gallery::, ))
  end
end

And it works! Now form_for(@gallery) and link_to(@gallery) use
galleries_path for action instead of non-existent
gallery_galleries_path

The only thing i want to know now is - am i criminal now after doing
theese practices?
Is it legal to override this property for this reason?
Thank you.


On Aug 18, 9:44 pm, Ajaxy alx.zinc...@gmail.com wrote:
 Hello!

 I've got Gallery resource with namespaces:
 /gallery/galleries_controller.rb
 /gallery/albums_controller.rb
 /gallery/photos_controller.rb
 and models Gallery::Gallery, Gallery::Album and Gallery::Photo in my /
 models/gallery/ folder

 I want my Gallery work like standart resource: site.com/galleries/2/
 albums/3, but being incapsulated in own folders, so i write in
 routes.rb this rules:

 scope :module = gallery do
   resources :galleries do
     resources :albums
   end
 end

 And then i've trouble using, i.e.

 @gallery = Gallery::Gallery.find(1);
 redirect_to(@gallery); undefined method `gallery_gallery_url'

 -- but why `gallery_gallery_url' when i expect just `gallery_url' like
 it is in rake routes?

 next time i write
 % @gallery = Gallery::Gallery.find(1); %
 %= form_for @gallery do |f| % undefined method `gallery_galleries_path'

 -- i need to manualy add :url option:
 %= form_for @gallery, :url = galleries_path do |f| %

 What's wrong? What i have to do with this issue?
 Thanks for any help!

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[Rails] Re: ActiveRecord (not Rails!)

[Marc Chanliau]

7stud -- wrote in post #1017182:
 Do you have mysql installed?  mysql and the ruby mysql adapter are
 different things.

Yes of course! And I have a database ready to be used with an 
activerecord application.

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[Rails] Re: ActiveRecord (not Rails!)

[Marc Chanliau]

7stud -- wrote in post #1017183:
 Also, if you post your question plus the 'gem environment' output in the
 Ruby forum, they will be able to pinpoint what is going on very quickly.
 Your question is really a rubygems question, so posting it in the main
 Ruby forum is more appropriate.

I posted there without any success, which is why I tried this topic 
list.

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Re: [Rails] Re: ActiveRecord (not Rails!)

[Fernando Almeida]

Do you have installed the libmysqlclient?

If not, install the libmysqlclient and reinstall the mysql gem.




2011/8/18 Marc Chanliau li...@ruby-forum.com

 7stud -- wrote in post #1017183:
  Also, if you post your question plus the 'gem environment' output in the
  Ruby forum, they will be able to pinpoint what is going on very quickly.
  Your question is really a rubygems question, so posting it in the main
  Ruby forum is more appropriate.

 I posted there without any success, which is why I tried this topic
 list.

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[Rails] Question about query

[Bruno Meira]

Hi guys,
I have the following problem:
In my application there is 3 entities that have this relationship:
-1 post has many comments
-1 comment belongs to one user and to one post
-1 comment could be voted by many users
My problem is how can I make a query to search for the best rated
comment, in other words, How can I get the comment from one user which
has the most quantity of good votes?
I don't know how to make this query... ;/

my entities are structure like this:

class Post  ActiveRecord::Base
  belongs_to :user
  belongs_to :post_type
  has_many :post_comments
end

class PostComment  ActiveRecord::Base
  belongs_to :user
  belongs_to :post
  has_many :post_comment_votes
end

class PostCommentVote  ActiveRecord::Base
  belongs_to :vote_type
  belongs_to :user
  belongs_to :post_comment
end

class VoteType  ActiveRecord::Base
  has_many :post_comment_votes
end


Thx ;D

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Re: [Rails] Re: ActiveRecord (not Rails!)

[Hassan Schroeder]

On Thu, Aug 18, 2011 at 4:57 PM, Marc Chanliau li...@ruby-forum.com wrote:

 Your question is really a rubygems question, so posting it in the main
 Ruby forum is more appropriate.

 I posted there without any success, which is why I tried this topic
 list.

What would you call success? I responded to your ruby-list posting
but didn't see any response to my suggestions  :-)

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Re: [Rails] How to pass an ERB template as string?

[Jim Ruther Nill]

On Thu, Aug 18, 2011 at 11:09 PM, Rodrigo Alves Vieira
rodrig...@gmail.comwrote:

 Hello everyone, I'm using a gem called aws-ses and I'm trying to
 sophisticate the email I am sending, here is the code currently:

 ses = AWS::SES::Base.new(:access_key_id = 'foo', :secret_access_key =
 'bar')


 email ={
  :to = #{subscriber.email},
   :source = '#{ag.name}' no-reply@#{ag.domain}',
   :subject = 'Hello',
   :html_body = h1#{subscriber.name}/h1
 }

 ses.send_email email

 However, instead of passing a hard coded string to the :html_body key, I
 want to pass a template in app/views/layouts/mail.html.erb

 Is there any method/Rails helper that lets me convert an entire template to
 string and pass to the html_body key?

 P.S: If you have already used this gem and know a/another way to help me
 please do it ;)


Sorry, I haven't used the gem yet but if you want to evaluate an erb file,
you might want to check out the ERB class.
http://ruby-doc.org/stdlib/libdoc/erb/rdoc/classes/ERB.html


 Thanks in advance, everyone!

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Re: [Rails] Re: how to work in group?

[Rodrigo Ruiz]

Thank you everyone, and that link helped me with git.

Well, setting aside the code access concern, the other thing I wanted to
know is how to work in a team with rails, and I mean, how should I split my
project?

For example, one member will do the Controllers, other will do the Models,
other will do the Views, one for Mailers, and one for Tests.

That is probably a wrong example, so thats what I need to know, how to
explicitly split parts of my project for each one to work on. It seems to me
that rails is like a one way straight coding, you can't work on one part of
the code without completing all the others that should come before.

I don't know if I was very clear, so please give me some feedback if I
wasn't. If I was, thought, please give me answers =)

Thank you guys.

Ps.: Ruby (or Rails) community is awesome, every single question I've made
was answered.

On Thu, Aug 18, 2011 at 4:12 AM, Alexey Muranov li...@ruby-forum.comwrote:

 Rodrigo,

 take a look at Distributed Workflow section in Git Community Book:
 http://book.git-scm.com/3_distributed_workflows.html

 It is assumed there however that everybody in your project has access to
 the
 full code.

 Alexey.

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Re: [Rails] LDAP Models

[Bruno Santos]

Devise + LDAP is a good idea to do it
https://github.com/cschiewek/devise_ldap_authenticatable

2011/8/18 Beerlover88 ericschovi...@gmail.com

 I'm running Rails 3.09/Ruby 1.8.7, and I'm looking for some advice on
 how to create models from LDAP servers.  I see there is an ActiveLDAP
 gem floating around out there, but it's Rails 3 support is only for
 3.1rc4.  Specifically, I'm trying to compare my user base on one LDAP
 server to another LDAP server.

 Thanks,

 Eric

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Re: [Rails] LDAP Models

[Long]

I have had good success using the net-ldap gem 
(http://rubygems.org/gems/net-ldap). Though you will need to map the attribute 
values to your model by hand.
Long

--- On Thu, 8/18/11, Beerlover88 ericschovi...@gmail.com wrote:

From: Beerlover88 ericschovi...@gmail.com
Subject: [Rails] LDAP Models
To: Ruby on Rails: Talk rubyonrails-talk@googlegroups.com
Date: Thursday, August 18, 2011, 6:24 PM

I'm running Rails 3.09/Ruby 1.8.7, and I'm looking for some advice on
how to create models from LDAP servers.  I see there is an ActiveLDAP
gem floating around out there, but it's Rails 3 support is only for
3.1rc4.  Specifically, I'm trying to compare my user base on one LDAP
server to another LDAP server.

Thanks,

Eric

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[Rails] Re: Opening a folder for file selection

[7stud --]

Okay.  But I am a beginner too, so I don't know if this is the best way.
I'm assuming the path to your folder is:

/public/files_to_read



class PagesController  ApplicationController
  def home
@title = Home
  end

  def get_files
dir_path = 'public/files_to_read'

Dir.chdir(dir_path) do
  @fnames = Dir.glob(*)
end

  end

  def download
dir_path = 'public/files_to_read'
fname = params[:fname]

Dir.chdir(dir_path) do
  allowed_fnames = Dir.glob(*)

  if allowed_fnames.include?(fname)
send_file(#{RAILS_ROOT}/#{dir_path}/#{fname},
  :filename = fname)
  else
@title = 'Home'
render 'home'
  end

end

  end

end

===


Test2App::Application.routes.draw do
  root :to = pages#home

  get 'pages/get_files'
  get 'pages/download'


===


h1Pages#home/h1
pFind me in app/views/pages/home.html.erb/p

%= link_to Read a file, {:controller = 'pages', :action =
'get_files'} %


===


h1Pages#get_files/h1
divFind me in app/views/pages/get_files.html.erb/div

h3Click the file you want to download:/h3

% @fnames.each do |fname| %
  div%= link_to fname, :controller = 'pages', :action = 'download',
:fname = fname %/div
% end %

===


!DOCTYPE html
html
head
  title%= @title %/title
  %= csrf_meta_tag %
/head
body

%= yield %

/body
/html


===


http://localhost:3000 = home.html.erb
click on Read file link = get_file.html.erb
click on a filename link = computer downloads the file

The reason for the code:

  if allowed_names.include?( )

is to prevent a hacker from going to the page of links, and then instead 
of clicking on a link, entering:

http://localhost:3000/pages/download?fname=/path/to/secrets.txt

If you don't check the fname that the server receives, a hacker can 
download any file they want.

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[Rails] Re: multiple fields_for behavior

[Matt Smith]

I solved this using content_for. I put everything in the first
fields_for but the fields I wanted to move to a different partial, I
placed in the content_for block. See the example below.

Hope this helps,

Matt

# example
  %= f.fields_for :cars do |car_fields| %
div class=field
  %= car_fields.label :color %br /
  %= car_fields.text_field :color %br /
/div
% content_for :plate_fields do %
  div class=field
%= car_fields.label :plate %br /
%= car_fields.text_field :plate %br /
  /div
% end %
  % end %

  ===
  %# This can go anywhere... i.e. another partial %
  %= content_for :plate_fields %


On Aug 17, 11:40 pm, Matt Smith matthewcalebsm...@gmail.com wrote:
 With the following code and result below, why does the cars_attributes
 index (i.e. name=owner[cars_attributes][0][color]) increment in
 the second fields_for block when only one car is built? Shouldn't it
 stay the same because only one car was built?

 Is this standard behavior? If so, what is the standard way to force
 both indexes to be 0 (or increment together if there are more
 records)?

 This is an over-simplified example. The reason I want two fields_for
 blocks is due the arrangement of partials in another complex form.

 Much thanks!

 Matt

 # owners_controller.rb
 # ...
   def new
     @owner = Owner.new
     @owner.cars.build

     respond_to do |format|
       format.html # new.html.erb
       format.xml  { render :xml = @owner }
     end
   end
 # ...

 # owner.rb
 class Owner  ActiveRecord::Base
   has_many :cars
   accepts_nested_attributes_for :cars
 end

 # car.rb
 class Car  ActiveRecord::Base
   belongs_to :owner
 end

 # new.html.erb
 %= form_for(@owner) do |f| %
   % if @owner.errors.any? %
     div id=error_explanation
       h2%= pluralize(@owner.errors.count, error) % prohibited
 this owner from being saved:/h2

       ul
       % @owner.errors.full_messages.each do |msg| %
         li%= msg %/li
       % end %
       /ul
     /div
   % end %

   div class=field
     %= f.label :name %br /
     %= f.text_field :name %
   /div

   h2Cars/h2

   %= f.fields_for :cars do |car_fields| %
     div class=field
       %= car_fields.label :color %br /
       %= car_fields.text_field :color %
     /div
   % end %

   ===

   %= f.fields_for :cars do |car_fields| %
     div class=field
       %= car_fields.label :plate %br /
       %= car_fields.text_field :plate %
     /div
   % end %

   div class=actions
     %= f.submit %
   /div
 % end %

 #http://localhost:8081/owners/new
 # ...
   h2Cars/h2

     div class=field
       label for=owner_cars_attributes_0_colorColor/labelbr /
       input id=owner_cars_attributes_0_color
 name=owner[cars_attributes][0][color] size=30 type=text /
     /div

   ===

     div class=field
       label for=owner_cars_attributes_1_platePlate/labelbr /
       input id=owner_cars_attributes_1_plate
 name=owner[cars_attributes][1][plate] size=30 type=text /
     /div
 # ...

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[Rails] Sortable Nested Set for Rails 3.1.rc6 (Jquery + Nested set gem) released

[Ilya Zykin]

Hello!

Dreaming about Drag and Drop for Nested Sets? It’s should be with
JQuery?
Here’s the solution!

https://github.com/the-teacher/Sortable-Nested-Set

Installing

cd ~
git clone g...@github.com:the-teacher/Sortable-Nested-Set.git
cd Sortable-Nested-Set/
sudo bundle install
change config/database.yml
rake app:create
rails s

PLAY!

I hope this will be useful for someone.

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Re: [Rails] Re: Validates attributes that aren't even being changed

[Chirag Singhal]

Try this

:unless = Proc.new {|user| user.password.nil?}

Essentially it will check if you are sending a password attribute to the
user or not while updating the user record and will check for this
validation only if password attribute is present.




Chirag
http://sumeruonrails.com



On Thu, Aug 18, 2011 at 11:05 PM, Leonel *.* li...@ruby-forum.com wrote:

 Can someone help me complete this piece of code?

 I'm thinking about using :unless because the only place where I wouldn't
 like the password validation is in the Edit User page.

 validates :password,
 :presence = true,
 :length = { :minimum = 6, :maximum = 20, :message = 'should have
 between 6 to 12 characters' },
 :confirmation = true,
 :unless = 

 I tried...
 :unless = params[:controller] == 'users' and params[:action] == 'edit'

 but I got the following error...
 Routing Error
 undefined local variable or method `params' for #Class:0x7f92ca83a518

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Re: [Rails] Math with table rows

[Chirag Singhal]

You should be doing this in the model, not controller.
If you want to do this everytime the user record is saved, then define a
before_save callback in your model and add this in the method

def udpate_result
  self.result = self.height*self.weight
end

Note: You will have to convert height and weight to integer/float if you
have not defined those columns as just string in the database.


Chirag
http://sumeruonrails.com



2011/8/18 Cássio Godinho cassiopgodi...@gmail.com

 Lets supose I have a User table, and on this table I have height, weight
 and result rows.
 In a form I input height and weight values and want to multiply those two
 values and store on the resulta row on database. I was trying something like
 that

   def criar
 @user = User.new(params[:user])
 @result = @user.height * @user.weight
 @user.result = @result

 But its not working, what am i doing wrong?

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[Rails] blog creation

[Annapoorna R]

hi all,
i am tryin to develop a blog in rails3...that should have all the basic
functionalities of blog like *creating a article *,*posting* ,*comments
*can anybody help me with this to start from the scratch.. is there any
plugin to be installed?

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[Rails] Re: Rails 3 - Production Environment

[CSK Vasanth]

Can anyone shed some light on this?

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