Ruby on rails 缺少模板用户“邮寄/注册”确认；“梅勒”；在Rails 4中

我正在学习用电子邮件发送电子邮件。本教程使用Rails 3，但我使用的是Rails 4

app/mailers/user_mailer.rb：

class UserMailer < ActionMailer::Base
    default from: "ryan@railscast.com"

    def registration_confirmation(user)
        @user = user
        mail(:to => "#{user.name}", :subject => "Registered")
    end
end

---

看起来问题在于文件扩展名，是不是

erb

不是

rb

注册\u confirmation.html.rb？查看文件应以erb结尾

将视图文件名重命名为：

registration_confirmation.html.erb # HTML format
registration_confirmation.text.erb # Plain text format

<p><%= @user.name %>,</p>

<p>Thank you for registering!</p>

<p><%= link_to "Edit profile", edit_user_url(@user) %></p>

class UsersController < ApplicationController
  ......
  def create
    @user = User.new(user_params)
    if @user.save 
      sign_in @user
      flash[:success] = "Welcome"
      UserMailer.registration_confirmation(@user).deliver
      redirect_to @user
    else
      render 'new'
    end
  end
 ......
end

Missing template user_mailer/registration_confirmation with "mailer". Searched in: * "user_mailer"

registration_confirmation.html.erb # HTML format
registration_confirmation.text.erb # Plain text format