ruby-on-rails - Ajax 不会每 3 秒正确重新加载一次。为什么？

Question

我试图让它重新加载显示每 3 秒未读消息数的部分。

但是，即使有 1 条未读消息，我编写的代码也根本不会显示数字……
如何重新加载显示正确数量的未读消息的部分内容？

我的代码是

资产/javascript/refresh_messages_count.js

$(document).ready(function () {
    // will call refreshPartial every 3 seconds
    setInterval(refreshPartial, 3000)
});

function refreshParital() {
  $.ajax({
    url: "messages/refresh_part";
  })
}

消息控制器.rb

def refresh_part
    @message_count = current_user.mailbox.inbox(:read => false).count(:id, :distinct => true)
    # get whatever data you need to a variable named @data
    respond_to do |format|
        format.js {render :action=>"refresh_part.js"}
    end
end

视图/布局/_menu.html.erb

<span id="message_received_count">
  <%= render :partial => "layouts/message_received_count" %>
</span>

视图/布局/_message_received_count.html.erb

<% if user_signed_in? && current_user.mailbox.inbox(:read => false).count(:id, :distinct => true) > 0 %>
  <li><%= link_to sanitize('<i class="icon-envelope"></i> ') + "Received" + sanitize(' <span class="badge badge-info">'+@message_count.to_s+'</span>'), messages_received_path  %> 
  </li>
<% else %>
  <li><%= link_to sanitize('<i class="icon-envelope"></i> ') + "Received", messages_received_path  %>
  </li>

视图/消息/refresh_part.js.erb

$('#message_received_count').html("#{escape_javascript(render 'layouts/messages_received_count', data: @message_count)}");

Answer 1

将您的函数 refreshPartial 更改为以下内容：

function refreshPartial() {
  $.ajax({
    url: "/messages/refresh_part",
    type: "GET",
    dataType: "script",
    success: function(data) {
             console.log("Called refresh_part");
    },
    error: function (xhr, ajaxOptions, thrownError) {
      alert("Error: " + xhr.status + " " + thrownError);
    }
  });
}

（/消息前面很重要，其他字段也很有用 - 一旦成功，您可以删除它的选项）。

并将控制器中的方法更改为：

def refresh_part
    @message_count = current_user.mailbox.inbox(:read => false).count(:id, :distinct => true)
    # get whatever data you need to a variable named @data
    respond_to do |format|
        format.js 
    end
end

（移除render部件 - rails 知道如何自动执行此操作）。

编辑

经过讨论 - 最后一个要解决的问题与 JQuery 冲突有关 - JQuery 被包含在多个地方并阻止 $(document).ready 触发。固定的。