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POAJAX Form Issues with Ruby on Rails
 

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    <p>I'm sure this question has been asked before in a different context but I'm still so stuck with figuring out AJAX Rails and, I guess, Rails in general (kinda makes me wonder if I should just go back to PHP...). Well anyways I have this form that I want to AJAXify.</p> <p>This is the "list" view which is part of the "subject" controller</p> <pre><code>&lt;h1&gt;Listing Subjects&lt;/h1&gt; &lt;ul id="subject_list"&gt; &lt;% @subjects.each do |c| %&gt; &lt;li&gt;&lt;%= link_to c.name, :action =&gt; 'show', :id =&gt; c.id %&gt;&lt;/li&gt; &lt;% end %&gt; &lt;/ul&gt; &lt;p id="add_link"&gt;&lt;%= link_to_function("Add a Subject", "Element.remove('add_link'); Element.show('add_subject')")%&gt;&lt;/p&gt; &lt;div id="add_subject" style="display:none;"&gt; &lt;%= form_tag(:action =&gt; 'create') do%&gt; Name: &lt;%= text_field "subject", "name" %&gt; &lt;%= submit_tag 'Add' %&gt; &lt;% end %&gt; &lt;/div&gt; </code></pre> <p>Code for my "subject" controller</p> <pre><code>class SubjectController &lt; ApplicationController def list @subjects = User.find(:all) end def show @subject = User.find(params[:id]) end def create @subject = User.new(params[:subject]) if @subject.save render :partial =&gt; 'subject', :object =&gt; @subject end end end </code></pre> <p>My "subject" partial </p> <pre><code>&lt;li id="subject_&lt;%= subject.id %&gt;"&gt; &lt;%= link_to subject.name, :action =&gt; 'show', :id =&gt; subject.id %&gt; &lt;/li&gt; </code></pre> <p>And the User is just a simple model I made that contains two columns "name" and "email".</p> <p>How this code currently works is that when you click "Add", the textfield input is revealed. When you type something in the input and submit it, the "_show" partial is rendered in the create link. I was following a Rails 2.0 tutorial but I have 3.0 and I've read through some tutorials and they all mention ":remote => true" and jquery_ujs.js but I have no idea how to apply them to a "form_tag" rather than "form_for" Rails helper. </p> <p>Basically I want to asynchronously add the element to the bottom of the list without a page load. I've really tried to understand absolutely all of the tutorials I could find but I just can't figure it out.</p>
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