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POjQuery post to Rails
 

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    <p>My setup: Rails 3.0.9, Ruby 1.9.2, jQuery 1.6.2</p> <p>I have a form that shows multiple photos and comments for a user and I wish to implement inline commenting.</p> <pre><code>&lt;div id="newsfeed"&gt; &lt;div&gt; &lt;div class="photo_title"&gt;Summer 2011&lt;/div&gt; &lt;div class="newsfeed_photo"&gt; &lt;a href="..." /&gt;&lt;/a&gt; &lt;/div&gt; &lt;textarea class="comment_box"&gt;Write a comment...&lt;/textarea&gt; &lt;/div&gt; &lt;div&gt; &lt;div class="comment_title"&gt;Seeing a movie&lt;/div&gt; &lt;textarea class="comment_box"&gt;Write a comment...&lt;/textarea&gt; &lt;/div&gt; </code></pre> <p>I want to submit an AJAX post upon the user hitting the enter key in the textarea field. Here's the javascript (incomplete) that I have so far</p> <pre><code> $('#newsfeed').delegate('.comment_box', 'keydown', function (event){ event.preventDefault(); $.post('/sub_comments', ...); }); </code></pre> <p>I'm using the <code>delegate</code> method because <code>&lt;div id='newsfeed'&gt;</code> contents could be replaced with another AJAX call. What I need is the syntax for jQuery <code>post</code> method assuming I need to pass some form params like say <code>photo_id</code>, etc. Assume that I have a way to access the values for the params, what's the syntax for the <code>post</code> call to creating params the way Rails expect them</p> <p>Here's the standard Rails bits</p> <pre><code>sub_comments_controller.rb def new @sub_comment = SubComment.new respond_to do |format| format.html # new.html.erb format.js end end </code></pre> <p>Also I don't want to use the usual <code>&lt;%= form_for(@sub_comment, :remote =&gt; true) do |f| %&gt;</code> for each and every inline comment I could add. I have also taken a look at Ryan Bates's <a href="http://railscasts.com/episodes/136-jquery" rel="noreferrer">railscast</a> but the code looks outdated.</p>
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