如何在 Rails 3 link_to 语句中包含完整路径? [英] How to include full-path in Rails 3 link_to statement?
问题描述
我正在尝试将 Rails link_to 语句放入包含完整路径的 Mailer 电子邮件中(即 - http://localhost/contacts/id/确认).我正在尝试的 link_to 语句适用于/pages/options 中的标准视图，但不适用于 Mailer 电子邮件.
这是我的/pages/options 控制器代码:
class PagesController <应用控制器定义选项结尾结尾这里是页面/选项视图:
<%= link_to "here", :controller =>"联系人", :action =>确认"，:only_path =>假，:id =>17％＞当我将此链接放入以下邮件程序 (welcome_email.html.rb) 时，出现以下错误.对此的任何帮助将不胜感激.
<头><meta content="text/html; charset=UTF-8" http-equiv="Content-Type"/><身体><%= link_to "here", :controller =>"联系人", :action =>确认"，:only_path =>假，:id =>17％＞</html>错误信息:
Contacts#create 中的运行时错误显示 C:/Documents and Settings/Corey Quillen/My Documents/Dev/Dev项目/my_projectProject/my_project/app/views/user_mailer/welcome_email.html.erb where line #7提高:缺少要链接的主机！请提供 :host 参数或设置default_url_options[:host]提取的源代码(围绕第 7 行):4:<meta content="text/html; charset=UTF-8" http-equiv="Content-Type"/>5:</头>6:<身体>7: <%= link_to "here", :controller =>"联系人", :action =>确认"，:only_path=>假，:id =>17％＞8:</body>9:</html>因为邮件程序不在响应堆栈内运行，所以它们不知道从哪个主机调用它们:这就是您遇到此错误的原因.很容易修复，更改代码以包含主机:
<%= link_to "here", :controller =>"联系人", :action =>确认"，:only_path =>假，:id =>17, :host =>example.com"%>您还可以通过指定以下内容，在 application.rb(或任何环境)内基于每个应用程序设置默认主机:
config.action_mailer.default_url_options = { :host =>example.com" }有关 ActionMailer 的完整文档以及出现此问题的原因，请查看 ActionMailer 文档.
I am trying to put a Rails link_to statement inside a Mailer email that includes the full-path (ie - http://localhost/contacts/id/confirm). The link_to statement that I am trying works in my standard View in /pages/options, but not in the Mailer email.
Here is my /pages/options Controller code:
class PagesController < ApplicationController
def options
end
end
And here's the pages/options View:
<div>
<%= link_to "here", :controller => "contacts", :action => "confirm",
:only_path => false, :id => 17 %>
</div>
When I put this link into the following mailer (welcome_email.html.rb), I am getting the error below. Any help with this will be greatly appreciated.
<!DOCTYPE html>
<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type" />
</head>
<body>
<%= link_to "here", :controller => "contacts", :action => "confirm",
:only_path => false, :id => 17 %>
</body>
</html>
The error message:
RuntimeError in Contacts#create
Showing C:/Documents and Settings/Corey Quillen/My Documents/Dev/Dev
Projects/my_project
Project/my_project/app/views/user_mailer/welcome_email.html.erb where line #7
raised:
Missing host to link to! Please provide :host parameter or set
default_url_options[:host]
Extracted source (around line #7):
4: <meta content="text/html; charset=UTF-8" http-equiv="Content-Type" />
5: </head>
6: <body>
7: <%= link_to "here", :controller => "contacts", :action => "confirm", :only_path
=> false, :id => 17 %>
8: </body>
9: </html>
Because mailers aren't run inside the response stack, they have no idea what host they were called from: that's why you're running into this error. It's easy to fix, change the code to include the host:
<%= link_to "here", :controller => "contacts", :action => "confirm",
:only_path => false, :id => 17, :host => "example.com" %>
You can also set the default host on a per-application basis inside of your application.rb (or any of your environments) by specifying this:
config.action_mailer.default_url_options = { :host => "example.com" }
For the full documentation on ActionMailer and why this problem occurs, check out the ActionMailer documentation.
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