Итак, я пытался добавить AJAX на мою домашнюю страницу с помощью rjs, и во всплывающем окне я получаю эту ошибку javascript:
RJS error:
TypeError: Cannot call method 'getElementsByTagName' of null
Ниже приведен весь соответствующий код.
Вот мой код в app / views / microposts / create.rjs:
page.insert_html :bottom, :feed_items, :partial => 'shared/feed_item', :object => @micropost
page.replace_html :user_info, pluralize(current_user.microposts.count, "micropost")
page[:micropost_form].reset
page.replace_html :notice, flash[:notice]
flash.discard
Вот приложение / views / pages / home.rb:
<% if signed_in? %>
<table class="front" summary="For signed-in users">
<tr>
<td class="main">
<h1 class="micropost">What's happening?</h1>
<%= render 'shared/micropost_form' %>
<%= render 'shared/feed' %>
</td>
<td class="sidebar round">
<%= render 'shared/user_info' %>
<%= render 'shared/stats' %>
</td>
</tr>
</table>
<% else %>
<h1>Sample App</h1>
<p>
This is the home page for the
<a href="http://railstutorial.org/">Ruby on Rails Tutorial</a>
sample application.
</p>
<%= link_to "Sign up now!", signup_path, :class => "signup_button round" %>
<% end %>
Вот мое частичное приложение фида / views / shared / _feed.html.erb:
<% unless @feed_items.empty? %>
<table id="feed_items" class="microposts" summary="User microposts">
<%= render :partial => 'shared/feed_item', :collection => @feed_items %>
</table>
<%= will_paginate @feed_items %>
<% end %>
Вот мой частичный элемент фида app / views / shared / _feed_item.html.erb
<tr id = "feed_item">
<td class="gravatar">
<%= link_to gravatar_for(feed_item.user), feed_item.user %>
</td>
<td class="micropost">
<span class="user">
<%= link_to feed_item.user.name, feed_item.user %>
</span>
<span class="content"><%= feed_item.content %></span>
<span class="timestamp">
Posted <%= time_ago_in_words(feed_item.created_at) %> ago.
</span>
</td>
<% if current_user?(feed_item.user) %>
<td>
<%= link_to "delete", feed_item, :method => :delete,
:confirm => "You sure?",
:title => feed_item.content %>
</td>
<% end %>
</tr>
И, наконец, вот соответствующая часть моего контроллера микросообщений:
class MicropostsController < ApplicationController
before_filter :authenticate, :only => [:create, :destroy]
before_filter :authorized_user, :only => :destroy
def create
@micropost = current_user.microposts.build(params[:micropost])
respond_to do |format|
if @micropost.save
flash[:success] = "Micropost created!"
format.html { redirect_to root_path }
format.js
else
@feed_items = []
render 'pages/home'
end
end
end