[Rails] How to refernece polymorphic join association

[Mario Gr]

I was wondering if you could help me with a quick question on writting
polymorphic join associations.

I have User has_many Favorite(polymorphic).  The user has favorite
Posts and Favorite Comments.

I want set up a direct association on User to Post

class User < ActiveRecord::Base
  has_many :favorite_posts , :as => :favoriteable, :source => :posts
end


I'm not quite sure how to describe that :favorite_posts association.
Right now, I'm just using a little method to bridge the gap, but would
prefer something more conventional, if possible.

Any help would be appreciated!

Thanks,

-MgR

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[Rails] LIbrary to maintain manage browser sessions from command line

[Mario Gr]

I have to update 80 pages' compliance terms on our clients existing CMS
system. I can't do this on the back end, and it's a tedious task I'm
looking to automate.

These are all in an admin panel, so I am trying to find a library that
could at least maintain a session and simulate browser interaction from
the command line.

Any leads would be helpful!

Thanks!

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[Rails] JSON output replacing & with "\u0026 "

[Mario Gr]

Hi,

I'm outputting some database objects as static JSON files using a stand
along ruby script.rb, that other could run outside of my rails app. When
I use this script, the output replaces "&" with "\u0026."  If I use the
same code to output my JSON files in console, it outputs fine.

I imagine there is some gem or something I'm not including in my
script.rb that would resolve this.  Thoughts?

Thanks!
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[Rails] Re: What are methods ending in =?

[Mario Gr]

Got it - maybe.  I found a good resource[1], but I am not sure I 
understand the value of the setter method in the first place. It would 
seem that benefit is being able to skip explicitly calling save on an 
object. Is that right?

If I had this method defined on my class:

  def my_attribute=(some_value)
@some_value = some_value
  end

I could call:

  @object.my_attribute = new_value

instead of:

  @object.my_attribute = new_value
  @object.save

Is that the reason to define a setter method?

[1] http://rubylearning.com/satishtalim/ruby_syntactic_sugar.html
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[Rails] Associate HABTM Model on Create? Passing in a user_id?

[Mario Gr]

Hi,

Could anyone help me pass a user_id when creating a child record with a
HABTM relationship?  I'm basically trying to create a record from the
following url

/users/:id/tasks/new

I tried several variants of the following, but keep getting various
errors. My first attempt below yeilds 'invalid Users' error and the
second yields a type mismatch error "user expected got string."

<% form_for(@tasks) do |f| %>
  #things I tried:
  <%= hidden_field_tag "tasks[user_ids][]", params[:user_id] %>
  <%= f.hidden_field :user_ids, params[:user_id] %>
  <%= f.submit 'Create' %>
<% end %>

I get why I'm getting these errors, but haven't been able to figure out
the correct syntax to get it to pass through. perhaps I've been making
the wrong assumption that if I could pass the user_id to my
create_action, rails would understand that it needed to create the HABTM
between the new record and the user_id I'm referencing.

Any help would be appreciated.

Thanks!

-MG
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[Rails] Best Practicies: Combining Polymorphic Results?

[Mario Gr]

Hi,

I am trying to combine results on two related associations and was
wondering if there were a best practicies way to do this.

I basically have VendorCodes that are matched to both Vendors and
VendorStaff.

vendors have VendorCodes (polymorphic)
vendorStaffs have VendoorCodes  (polymorphic)

I want to easily be able to derive something like:
all_vendor_codes = vendor.vendor_codes +
vendor.vendor_staffs.collect.vendor_code

I have some models set up as, is there a better way to drive this other
than the way I've done it?  Thanks for any help!

My Model:

   class Vendor < ActiveRecord::Base
 has_many :vendor_staffs
 has_many :vendor_codes, :as => :vendor_codable
   end

   class VendorStaff < ActiveRecord::Base
 belongs_to :vendors
 has_many :vendor_codes, :as => :vendor_codable
   end

   class VendorCode < ActiveRecord::Base
 belongs_to :vendor_codable, :polymorphic => true
   end
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[Rails] Combining Polymorphic Results from Related Records?

[Mario Gr]

Hello,

I am trying to combine results on two related associations.  I have some
models set up as:

class Vendor < ActiveRecord::Base
  has_many :vendor_staffs
  has_many :vendor_codes, :as => :vendor_codable
end

class VendorStaff < ActiveRecord::Base
  belongs_to :vendors
  has_many :vendor_codes, :as => :vendor_codable
end

class VendorCode < ActiveRecord::Base
  belongs_to :vendor_codable, :polymorphic => true
end

Is there a recommended way to derive this result:

all_vendor_codes = vendor.vendor_codes +
vendor.vendor_staffs.collect.vendor_codes
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[Rails] Best practices to pass in Conditions to Rake task?

[Mario Gr]

I'm trying to pass in conditions to a find command in a rake task.  I'm
still a little new to this, but what is the best practices for this?
Should I be passing in a hash or..Any suggestions welcome!

command line: rake mytask conditions='condition = 1'

#mytask.rake
def conditions
  ENV['conditions'] || ENV['conditions'] || nil
end

task :metadata => :environment do
  klass.find_each(:start => start, :conditions => conditions) do
|record|
  #do stuff
  end
end

thanks!
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[Rails] Re: Restful routing question

[Mario Gr]

Yep..  I have done both. This is the output from my rake routes.

discard_contents_project POST   /projects/:id/discard_contents(.:format) 
{:controller=>"projects", :action=>"discard_contents"}

It seems like it should be a valid route...

I found it:  :method => :post. The method needed to be explicitly set 
since the route only allows the path if the request method is post.
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[Rails] Re: Restful routing question

[Mario Gr]

Oops.  The rails link_to path is actually: 
discard_contents_project_path(current_project, :to_project_id => 
params[:id])
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[Rails] Restful routing question

[Mario Gr]

Hi,

I was wondering if you guys could help me out.

i have a link_to url like so:
discard_contents(current_project, :to_project_id => params[:id])
# =>
http://localhost:3000/projects/1163131/discard_contents?to_project_id=1121802


but I keep getting this "No action responded to 1163131" error

I am guessing it's some issue with my routing configuration, but I'm not
seeing it..

#from routes.rb

map.resources :projects, :member => { ... :move_or_discard_contents =>
:any, :move_contents => :post, :discard_contents => :post }, :collection
=> { ... } do |project|

end


/projects/discard_contents/1163131?to_project_id=1121802 works.

any ideas?
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[Rails] Combine if and do in a single line?

[Mario Gr]

Is there a  way to combine if and do into a single line?

items.each do |item| if current_user.admin?
  #do stuff
end

Thanks!
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[Rails] Re: Action to Render Image for Download

[Mario Gr]

I got it, with the help of a friend.

send_file art.list_image.path(:original), :type => 
art.list_image_content_type, :disposition => 'attachment', :filename => 
art.id
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[Rails] Action to Render Image for Download

[Mario Gr]

Hi,

I'm trying to set up an action that will send an image to the browser as
an attachment for download using paperclip.  Sadly, I keep getting
stuck.  Insead, I keep sending an empty image to the browser.  Anyone
have any luck or any ideas?

  def download_image
art = Art.find(params[:id])
send_file art.list_image.url(:original), :type =>
art.list_image_content_type, :disposition => 'attachment'
  end

Thanks so much.
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[Rails] Re: Using module methods in Rake task& model?

[Mario Gr]

Hu?  Did you not read my last post?  You wrote almost exactly the same 
questing twice.  You have to both require the file, then include the 
module.


###rake_file.rb
require 'lib/modules/your_module_filename.rb'

namespace :your_rake_task do
  include your_module_name

  #do stuff
end
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[Rails] Re: Using module methods in Rake task& model?

[Mario Gr]

Yep.  I had to both require the file then include the module:

  require 'lib/modules/report_csv_process.rb'
  include ReportCsvProcess
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[Rails] Trunicating Names in options_from_collection_for_select

[Mario Gr]

Anyone know how I could trunicate the names of a passed in array  in
options_from_collection_for_select?

I tried a few things but nothing worked.

Any ideas would be appreciated!

<%= options_from_collection_for_select available_projects, :id, :name,
@selected_project_id %>
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[Rails] Re: Using module methods in Rake task& model?

[Mario Gr]

I was a little off, but still haven't quite figured it out.  I currently 
have:

> /lib/module/order_process.rb
> module order_process
>   def process_order(id)
>  #do stuff
>   end
> 
> 
> /lib/tasks/ordering.rake
> 
> include 'order_process.rb'
> namespace :send_report do
>   task :order => :environment do
>  process_order(id)
>   end
> end
> 
> /app/models/segment.rb
> class Segment < ActiveRecord::Base
>   include 'report_csv_process.rb'
> 
>bla bla
> 
> end


I tried removing the single quotes, without luck
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[Rails] Using module methods in Rake task& model?

[Mario Gr]

Hello,

I'm trying to use some methods I'm defining in a module in a model and
my rake task.  How can I do this?  Any help would be appreciated.

I've currently got the following, but my rake task can't access the
methods in my module. Instead, I get..

undefined local variable or method `report_csv_process' for
#


/lib/module/order_process
module order_process
  def process_order(id)
 #do stuff
  end


/lib/tasks/ordering.rake

include order_process
namespace :send_report do
  task :order => :environment do
 process_order(id)
  end
end

/app/models/segment.rb
class Segment < ActiveRecord::Base
  include report_csv_process

   bla bla

end
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