Add comments + Ajax - ruby-on-rails

Question

I've started learning rails and I would like to add ajax to comments
Comments should be added using Ajax
Can you please help or link to an example?
Here if my config.rb:
resources :posts do
resources :comments
end
in post/show.html.erb
<p><%= #post.title %></p>
<h2>Comments:</h2>
<div id='com'>
<%= render #post.comments %>
</div>
<h2>Add a comment:</h2>
<%= render "comments/form" %>
in view/comments/_comment.html.erb:
<p>
<strong>Commenter:</strong>
<%= comment.commenter %>
</p>
<p>
<strong>Comment:</strong>
<%= comment.body %>
</p>
<%= link_to "Del", [comment.post, comment], :confirm => 'Are you sure?', :method => :delete %>
<hr>
in comments/form.html.erb
<%= form_for([#post, #post.comments.build], remote: true) do |f| %>
.
.
.
in comments_controller:
class CommentsController < ApplicationController
def create
#post = Post.find(params[:post_id])
#comment = #post.comments.create(params[:comment])
respond_to do |format|
format.html { redirect_to post_path(#post) }
format.js
end
end
and in view add file : _create.js.erb
$('#com').html("<%=j render #post.comments %>");
without remote true
all works ( but reload page )
action delete works to
in application.html.erb
<%= javascript_include_tag 'application' %>
when i click to submit form - nothing happens
but when i (after submit) reload page - i saw added comment(s)

Answer 1

You need to include unobtrusive javascript
in app/assets/javascripts/application.js
Do you have this (if not add it )
//= require jquery
//= require jquery_ujs
and
Answered by #DemitriyDN himself :)
rename _create.js.erb to create.js.erb

Answer 2

Edit your new code
in comments_controller:
class CommentsController < ApplicationController
def create
#post = Post.find(params[:post_id])
#comment = #post.comments.create(params[:comment])
respond_to do |format|
format.html { redirect_to post_path(#post) }
format.js
end
end
end