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POValidation methods in plugins
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copied!<p>I am using Ruby on Rails 3.0.7 and I am trying to implement an <code>act_as_article</code> plugin for my application. What I would to do is run <em>validation</em> methods for the "acting as article class" inside that plugin (note: my plugin requires to create some database table columns in order to work - one of these is represented by the <code>title</code> attribute).</p> <p>In my RoR application I have this code:</p> <pre><code># vendor/plugins/article/lib/acts_as_article.rb module Article extend ActiveSupport::Concern included do validates :title, # Validation method :presence => true end module ClassMethods def acts_as_article send :include, InstanceMethods end end module InstanceMethods ... end end ActiveRecord::Base.send :include, Article # app/models/review.rb class Review acts_as_article ... end </code></pre> <p>Using the above code the plugin works. However if I add some <em>Record Association</em> in the <code>Review</code> class like this:</p> <pre><code>class Review acts_as_article has_many :comments # Adding association ... end </code></pre> <p>and in my <code>ReviewsController</code> I add the following, as well:</p> <pre><code>def create ... @article.comments.build( # This is the code line 89 :user_id => @user.id ) if @article.save ... end end </code></pre> <p>I get this error</p> <pre><code>NoMethodError (undefined method `title' for #<Comments:0x00000103abfb90>): app/controllers/articles_controller.rb:89:in `create' </code></pre> <p>Probably it happens because the validation run for all <code>Review</code> "associated" classes\models and the <code>Comment</code> class <em>doesn't have</em> the <code>title</code> attribute. I think that because if inside the plugin code I comment out the validation method like this</p> <pre><code>module Article ... included do # validates :title, # Validation # :presence => true end ... end </code></pre> <p>I don't get errors anymore.</p> <p>So, <strong>how can I solve this issue?</strong></p> <p><em>Note</em>: I am not expert on creating plugin (this is my first time), so I ask implicitly also if I'm doing a good job for the plugin implementation...</p>

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