仅在Rails应用中的某些页面上加载Google地图脚本 [英] Load Google Maps script only on certain pages in Rails app

问题描述

我有一个由大约20页组成的Rails应用程序，只有我使用Google地图的两个应用程序。

有没有更好的方法可以在某些页面上专门加载Google Maps API脚本（比如头标记）：

<％= javascript_include_taghttps://maps.googleapis.com/maps/api/js?v=3.exp&sensor=falseif params [：controller] ==商店&& params [：action] ==index％>

解决方案

布局文件使用以下代码：

 <％= yield：head％> 
  

然后在包含javascript的页面的视图文件中执行此操作;

 <％content_for：head do％> 
<％= javascript_include_taghttps://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false％> 
<％end％> 
  

你可以将这个content_for块放在你的视图文件的任何位置，并且它会在文档头部您已在中定义了yield：head

更多信息http://guides.rubyonrails.org/layouts_and_rendering.html#understanding-yield ，这里http://guides.rubyonrails.org/layouts_and_rendering.html#using-the-content-for-method

I have a Rails application that consists of about 20 pages and only on two of those I'm using Google Maps.

Is there any better way to exclusively load the Google Maps API-script on certain pages than this (in the head tag):

<%= javascript_include_tag "https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false" if params[:controller] == "shops" && params[:action] == "index" %>

解决方案

In the head of you layout file use the following code

<%= yield :head %>

And then in the view file for the pages you want to include the javascript do this;

<% content_for :head do %>
  <%= javascript_include_tag "https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false" %>
<% end %>

You can put this content_for block anywhere in your view file and it will render in the head of the doc where you have defined the yield :head

More info here http://guides.rubyonrails.org/layouts_and_rendering.html#understanding-yield and here http://guides.rubyonrails.org/layouts_and_rendering.html#using-the-content-for-method

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