Rails 4.1 Mailer预览和设计定制电子邮件 [英] Rails 4.1 Mailer Previews and Devise custom emails

问题描述

我有一个全新的Rails 4.1.1应用程序，我在定制Devise的电子邮件。我想让它们显示在新的Rails电子邮件预览功能上，所以我做了以下操作：

1）添加以下代码片段到我的 config / development.rb file：

  config.action_mailer.preview_path =＃{Rails.root} /创建我的自定义Devise电子邮件 UserMailer 在 app / mailers / user_mailer.rb ：
  UserMailer类Devise :: Mailer 
 helper：application＃提供对application_helper中定义的所有帮助器的访问。 
包含Devise :: Controllers :: UrlHelpers＃可选。例如。 `confirm_url` 
 
 layoutnotifications_mailer
 end 
  
 3 ）更改了 config / initializers / devise.rb 以包含以下代码段：
  config.mailer ='UserMailer'
  
 4）添加类 UserMailerPreview 至 lib / mailer_previews ，内容如下：
  class UserMailerPreview< ActionMailer :: Preview 
 def confirm_instructions 
 UserMailer.confirmation_instructions（User.first，{}）
 end 
 
 def reset_password_instructions 
 UserMailer.reset_password_instructions（User。首先，{}）
 end 
 
 def unlock_instructions 
 UserMailer.unlock_instructions（User.first，{}）
 end 
 end 
  
到目前为止，这么好。看来我已经做了一切正确。但是，我尝试在/ rails / mailers / user_mailer / confirmation_instructions路由上查看 confirmation_instructions 电子邮件的预览，我收到以下错误：
 $ b $对于＃<＃< Class：0x007fa02ab808e0>：0x007fa030fb7e80>的
 $ b 
 未定义的方法`confirmation_url' 
  
我的的确认代码confirm_url.html.erb 模板看起来像这样：
 <％= t（notifications.texts.greeting）+ @ user.display_name％ > 
 
< p>您可以通过以下链接确认您的帐户电子邮件：< / p> 
 
< p><％= link_to'确认我的帐户'，confirm_url（@resource，：confirmation_token => @token）％>< / p> 
  
我做错了什么？我想这是我错误的方式，我称之为 confirmation_url 方法。任何人都可以帮助我吗？
解决方案
我发现这个问题是因为我正在试图找出如何预览Devise的电子邮件。我复制了你的代码几乎完全正确，它对我来说很好。
 
 
 
我唯一不同的是删除行 layoutnotifications_mailer / code>从 UserMailer   - 当我包含它我有一个错误消息缺少模板布局/ notifications_mailer 。如果你删除它会发生什么？
 
 
 
行 Devise :: Controllers :: UrlHelpers 绝对包含方法 confirm_url （您可以通过打开Rails控制台并运行来查看此内容，包括Devise :: Controllers :: UrlHelpers 然后 confirmation_url ，所以我怀疑问题是你的预览没有被 UserMailer 呈现，我不是确定为什么，但行 layoutnotifications_mailer可能是罪魁祸首。
 
 
 
你有一个类叫 code> NotificationsMailer ？包含 Devise :: Controllers :: UrlHelpers 在哪里可以解决您的问题？
 
I have a brand new Rails 4.1.1 app where I'm customizing the Devise emails. I want to have them displayed on the new Rails email preview feature so I did the following:

1) Added the following snippet to my config/development.rb file:
config.action_mailer.preview_path = "#{Rails.root}/lib/mailer_previews"
2) Created my custom Devise email UserMailer in app/mailers/user_mailer.rb:
class UserMailer < Devise::Mailer   
  helper :application # gives access to all helpers defined within `application_helper`.
  include Devise::Controllers::UrlHelpers # Optional. eg. `confirmation_url`

  layout "notifications_mailer"
end
3) Changed config/initializers/devise.rb to contain the following snippet:
config.mailer = 'UserMailer'
4) Added the class UserMailerPreview to lib/mailer_previews with the following content:
class UserMailerPreview < ActionMailer::Preview
  def confirmation_instructions
    UserMailer.confirmation_instructions(User.first, {})
  end

  def reset_password_instructions
    UserMailer.reset_password_instructions(User.first, {})
  end

  def unlock_instructions
    UserMailer.unlock_instructions(User.first, {})
  end
end
So far, so good. Looks like I've done everything right. But then I try to see the preview for the confirmation_instructions email at the /rails/mailers/user_mailer/confirmation_instructions route and I get the following error:
undefined method `confirmation_url' for #<#<Class:0x007fa02ab808e0>:0x007fa030fb7e80>
the code for my confirmation_url.html.erb template looks like this:
<%= t("notifications.texts.greeting") + @user.display_name %>,

<p>You can confirm your account email through the link below:</p>

<p><%= link_to 'Confirm my account', confirmation_url(@resource, :confirmation_token =>  @token) %></p>
What am I doing wrong? I guess it is something wrong with the way I call the confirmation_url method. Anyone can help me here?
解决方案
I found this question because I was trying to figure out how to preview Devise emails myself. I copied your code almost exactly and it works fine for me.

The only thing I did differently was to remove the line layout "notifications_mailer" from UserMailer - when I included it I got an error message Missing template layouts/notifications_mailer. What happens if you remove it?

The line Devise::Controllers::UrlHelpers definitely includes the method confirmation_url (you can see this for yourself by opening up the Rails console and running include Devise::Controllers::UrlHelpers then confirmation_url, so I suspect the problem is that your previews aren't being rendered by UserMailer at all. I'm not sure why, but the line layout "notifications_mailer" might be the culprit.

Do you have a class called NotificationsMailer? Does including Devise::Controllers::UrlHelpers in there solve your problem?

                        
这篇关于Rails 4.1 Mailer预览和设计定制电子邮件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！