Rails 4在表单提交后不呈现ajax

Question

部分j工作，只有重新渲染才会发生，除非我在浏览器上点击刷新，因此，数据正在db中发送和创建，但js不会呈现新数据。

我的JS：

 $('#myform').submit(function() {  
    var valuesToSubmit = $(this).serialize();
      $(this).find('textarea').addClass('uneditable-input').attr('disabled', 'disabled');
    $.ajax({
        url: $(this).attr('action'), //sumbits it to the given url of the form
        data: valuesToSubmit,
        type: "POST",
        dataType: "JSON" // you want a difference between normal and ajax-calls, and json is standard
    }).complete(function(json){
        //act on result.
      //alert("submitted");


     $("#disabletext").removeClass('uneditable-input').removeAttr('disabled', 'disabled').val('');
        #this line below is the only thing that doesn't work
       $('#indexstream').html("<%= escape_javascript (render 'postline') %>");

      #this line works, but it hides the most recent post in the index and shows it again
      #but the most recent post should be the one after this form submits
      $("#userlink").hide().show("slow").effect('highlight', {}, 3000);




    });   
    return false; // prevents normal behaviour
});
});

视图：

<div id="indexstream">

   <%= render 'postline' %>

          </div>

_postline.html.erb

<% @posts.each do |post| %>

            <div id="streamline"> 

            <div id ="userlink">

              <%= image_tag post.avatar.url(:small), :style => "border-radius: 5px; border: 1px solid #e1e8ed;" %> 
           <%= post.firstname %> <%= " "  %>  <%= post.lastname %><%= " " %>  <%= link_to post.email, user_path(post.user_id), {class: "usernamelink", style: "font-weight: normal;"} %>

  <abbr class="timeago" title="<%= post.created_at.getutc.iso8601 %>" style="float: right; margin-right: 5px; font-size:90%;
                                                                             margin-top: 12px; color: #8899a6; text-decoration: none !important;">
    <%= post.created_at.to_s %>
</abbr>



            <br /><br />
              <% unless post.description == "status" %>
               <div style="background: #EF4836; width: 10px; height: 5px; float: right; margin-top: -58px; text-align: center; border-radius: 10px; color: #fff; padding-top: 2px; padding-bottom: 2px; margin-right: 5px;">
              </div>
            <h1 style="style= z-index: 100000; color: #3399FF "><%= link_to post.title, post_path(post), {class: "usernamelink", style: "color: #3399FF;"} %></h1>


               <% if post.asset1.file? %>
            <%= image_tag post.asset1.url(:small) %><% end %> <% if post.asset2.file? %><%= image_tag post.asset2.url(:small) %><% end %> <% if post.asset3.file? %><%= image_tag post.asset3.url(:small) %><% end %> <% if post.asset4.file? %><%= image_tag post.asset4.url(:small) %>
            <% end %>
              <br /><br />
    <i class="fa fa-map-marker fa-lg" style="margin-right: 5px; margin-left: 5px;"></i>  <%= post.school %>  <div style="float: right; text-align: left; margin-right: 20px;"> <i class="fa fa-usd "></i><%= post.price %></div>

              <% end %>
              <% if post.description == "status" %>
              <div style="background: #2ECC71; width: 10px; height: 5px; float: right; margin-top: -58px; text-align: center; border-radius: 10px; color: #fff; padding-top: 2px; padding-bottom: 2px; margin-right: 5px;">

              </div>
              <h1><%= auto_link( post.title ) %></h1>


                    <% if post.asset1.file? %>
            <%= image_tag post.asset1.url(:small) %><% end %> <% if post.asset2.file? %><%= image_tag post.asset2.url(:small) %><% end %> <% if post.asset3.file? %><%= image_tag post.asset3.url(:small) %><% end %> <% if post.asset4.file? %><%= image_tag post.asset4.url(:small) %>

            <% end %>
             <br /><br />

              <% end %>






           </div>
         </div>  

<% end %>

发布控制器创建方法：

def create

    @post = Post.new(post_params) 
    @post.email = current_user.username
    @post.user_id = current_user.id
    @post.firstname = current_user.firstname
    @post.lastname = current_user.lastname
    @post.avatar = current_user.avatar
    @post.school = current_user.school


    respond_to do |format|  
      if @post.save
        format.html { redirect_to posts_path, :notice => '<i class="fa fa-check fa-5x"></i>'.html_safe }
       # format.js   # @current_item = @post 
        format.json { render action: 'index', status: :created, location: @post }
        #format.html {render 'postline'}


      else
        format.html { render action: 'new' }
       format.json { render json: @post.errors, status: :unprocessable_entity }
      end
    end

  end

代码对我来说很好，我似乎无法让它工作。我需要你们所有人，一直在努力工作几天没有任何结果