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# link_categories has_many links
create_table "link_categories", :force => true do |t|
  t.string   "name"
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class Activity < ActiveRecord::Base
  has_and_belongs_to_many :products
  has_and_belongs_to_many :articles
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# Associations
#
# User: has_many :sources, :as => :sourceable, :dependent => :destroy
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Clip.find_by_sql(["select * from clips where not exists
        (select 'clip_id' from histories where histories.clip_id = clips.id
        and histories.user_id = ?) ORDER BY clips.created_at DESC LIMIT 20", user.id])

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class Item < ActiveRecord::Base
  ALL_VOTES = "all_votes"
  SCORE = "score"
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class User < ActiveRecord::Base
  has_many :assets, :foreign_key => 'creator_id'

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if @chosen_campaign.network.nil?
  case params[:type]
  when "moderated"
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    if @foo.update_attributes(params[:foo]) and @foo.bar.update_attributes(params[:bar])
      redirect_to foo_url(@parent)
    else
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require 'rubygems'
require 'active_record'
require 'benchmark'
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  def planned_percent_complete
    if self.planned_complete_in_dollars != nil
      (( self.planned_complete_in_dollars.to_f / self.task.budget.to_f )  * 100).round(2)
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def which_class?
  if self.language == "C/C++"
     self.language = "sh_cpp"
...