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Rails: Partial Rendering with Ajax not working - Commenting System Like FB
class CommentsController < ApplicationController
  def create
    @micropost = Micropost.find(params[:micropost_id])
    @comment = @micropost.comments.build(params[:comment])
    @comment.user_id = current_user.id
    @comment.save
      respond_to do |format|
      format.html
      format.js
    end
  end
end

<div id='CommentContainer-<%= micropost.id%>' class='CommentContainer Condensed2'>
<div class='Comment'>
<%= render :partial => "comments/form", :locals => { :micropost => micropost } %>
</div>
<div id='comments'>
<%=render micropost.comments %>
</div>
</div>