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PORails 3 - Nested Forms and Default Values
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  1. PORails 3 - Nested Forms and Default Values
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    copied!<p><br> I am trying to create form that contains another model in rails. I have accomplished this with using accepts_nested_attibutes and it is working great. The problem is I have an additional field in that table that records the User Name for each comment and I am not sure on how to insert that information when a new comment is being created. The username is being supplied by the Application Controller using the "current_user" method.</p> <p>Regards,<br> Kyle</p> <p><strong>Comment Model</strong></p> <pre><code> class Comment &lt; ActiveRecord::Base belongs_to :post before_save :set_username private def set_username self.created_by = current_user end end </code></pre> <p><strong>Application Controller</strong> (This is just a Sandbox app so I just put a string in the method)</p> <pre><code>class ApplicationController &lt; ActionController::Base protect_from_forgery helper_method :current_user def current_user "FName LName" end end </code></pre> <p><strong>Show View</strong></p> <pre><code>&lt;p id="notice"&gt;&lt;%= notice %&gt;&lt;/p&gt; &lt;p&gt; &lt;b&gt;Title:&lt;/b&gt; &lt;%= @post.title %&gt; &lt;/p&gt; &lt;div id="show_comments"&gt;&lt;%= render 'comments' %&gt;&lt;/div&gt; &lt;div id="add_comments"&gt; Add Comment &lt;%= form_for @post, :url =&gt; {:action =&gt; 'update', :id =&gt; @post.id}, :html =&gt; { :'data-type' =&gt; 'html', :id =&gt; 'create_comment_form' } do |f| %&gt; &lt;%= f.fields_for :comments, @new_comment do |comment_fields| %&gt; &lt;%= comment_fields.text_area :content %&gt; &lt;%end%&gt; &lt;div class="validation-error"&gt;&lt;/div&gt; &lt;%= f.submit %&gt; &lt;% end %&gt; &lt;/div&gt; </code></pre> <p><strong>Post Controller</strong></p> <pre><code> def update @post = Post.find(params[:id]) respond_to do |format| if @post.update_attributes(params[:post]) @comments = @post.comments.all format.html { redirect_to({:action =&gt; :show, :id =&gt; @post.id}, :notice =&gt; 'Post was successfully created.') } format.xml { render :xml =&gt; @post, :status =&gt; :created, :location =&gt; @post } else format.html { render :action =&gt; "new" } format.xml { render :xml =&gt; @post.errors, :status =&gt; :unprocessable_entity } end end end </code></pre>
 

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