Javascript AJAX调用在Rails 3中呈现局部

我有一个用户的仪表板页面，左侧有一个侧栏，其中包含项目、博客等链接。我希望能够单击“项目”链接等链接，然后在主区域中，项目视图将加载（视图将是项目的项目列表），而无需刷新页面。我正试图用AJAX实现这一点，但一切都不起作用

我想应该是这样的。用户单击

show.html.erb

<%= link_to 'Projects', '/dash', remote: true %>

然后，在

users\u controller.rb

controller:

def show
    @user = User.find(params[:id])
    @projects = @user.projects

    respond_to do |format|
      format.html # renders show.html.erb
      format.js   # renders show.js.erb
    end
end

其中执行

show.js.erb

。我的

show.js.erb

文件有一行：

$('#ajax').html("<%= escape_javascript(render(:partial => 'projects/index')).html_safe %>");

app/views/projects/index.html.rb

接收@projects并给出如下列表：

match '/dash' => 'users#show'

<% @projects.each do |project| %>
  <p><%= project.name %></p>
<% end %>

---

显然，我做错了事情，因为这不起作用。我做错了什么？是否有一些代码需要在其他地方更改？我在轨道3.2.13上，因此，

app/assets/javascripts/application.js

下的

/=jquery

和

/=jquery\u ujs

行应该已经导入了必要的jquery和AJAX功能。

问题是，在

show.js.erb

文件中，您试图呈现一个部分，但传递的是一个非部分的文件。部分文件以下划线开始

因此，为了避免重复代码，我会这样做：

# app/views/projects/show.js.erb
$('#ajax').html("<%= escape_javascript(render :partial => 'index', :locals => { :projects => @projects } ) %>");

# app/views/projects/index.html.erb
<%= render :partial => 'index', :locals => { :projects => @projects } %>

# app/views/projects/**_**index.html.erb
# Include here the code that you previously had in index.html.erb
# Don't forget to change @projects to projects
<% projects.each do |project| %>
  <p><%= project.name %></p>
<% end %>

#app/views/projects/show.js.erb
$（'#ajax'）.html（'index'，:locals=>{:projects=>@projects}）%>”；
#app/views/projects/index.html.erb
'index'，：locals=>{:projects=>@projects}%>
#app/views/projects/**index.html.erb
#这里包括您以前在index.html.erb中使用的代码
#不要忘记将@projects更改为projects

另外，您不应该在路由中使用

match

，因为您几乎不需要GET和POST方法都可以访问路由。因此，尝试使用

get

而不是

match

# app/views/projects/show.js.erb
$('#ajax').html("<%= escape_javascript(render :partial => 'index', :locals => { :projects => @projects } ) %>");

# app/views/projects/index.html.erb
<%= render :partial => 'index', :locals => { :projects => @projects } %>

# app/views/projects/**_**index.html.erb
# Include here the code that you previously had in index.html.erb
# Don't forget to change @projects to projects
<% projects.each do |project| %>
  <p><%= project.name %></p>
<% end %>