Rails 3 - Creating a comment and then returning the Partial with JUST the new comment

Question

Here's the flow I have...

First, jquery posts the new comment to the server:

$.post(this.action,$(this).serialize(),null,'script');

Then in the comments controller:

  def create

    @comment =  lots of stuff going on here but it works...

    if @comment.save
      flash[:notice] = "Successfully created comment."
      respond_to do |format|
       format.js
    end
  end

Ok and this is where I'm stuck, then the create.js.erb:

$(".cmtBox").html("<%=escape_javascript(render :partial =>"comments/comment")%>");

And the partial:

<div class="cmtBox" id="comment_<%=comment.id%>">
<%=comment.content%>
</div>

Where I'm stuck is calling the partial in create.js.erb... How do I pass what Rails needs to populate the partial? Right now I get the error: "Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id"

Thanks!

Answer 1

You should use:

render :partial => @comment

or

render :partial => "comments/comment", :object => @comment

or

render :partial => "comments/comment", :locals => {:comment => @comment}