default_url_options 的语法

Question

我正在尝试发送 Devise 密码提醒电子邮件。当我单击提醒 link 时，日志文件包含此错误：

I, [2017-04-22T21:11:37.394060 #1265]  INFO -- :   Rendered devise/mailer/reset_password_instructions.html.erb (3.5ms)
D, [2017-04-22T21:11:37.394372 #1265] DEBUG -- : 
Devise::Mailer#reset_password_instructions: processed outbound mail in 6.9ms
I, [2017-04-22T21:11:37.394835 #1265]  INFO -- : Completed 500 Internal Server Error in 33ms (ActiveRecord: 4.5ms)
F, [2017-04-22T21:11:37.398625 #1265] FATAL -- : 
ActionView::Template::Error (Missing host to link to! Please provide the :host parameter, set default_url_options[:host], or set :only_path to true):
    2: 
    3: <p>Someone has requested a link to change your password. You can do this through the link below.</p>
    4: 
    5: <p><%= link_to 'Change my password', edit_password_url(@resource, reset_password_token: @token) %></p>
    6: 
    7: <p>If you didn't request this, please ignore this email.</p>
    8: <p>Your password won't change until you access the link above and create a new one.</p>
  app/views/devise/mailer/reset_password_instructions.html.erb:5:in `_app_views_devise_mailer_reset_password_instructions_html_erb___1026568370915801248_70174322925120'

我想我只是在设置配置时遇到语法问题。查看 config/environments/production.rb:

Rails.application.configure do
  ...
  config.action_mailer.default_url_options = {host: 'wombatdb.com'}

  config.action_mailer.delivery_method = :smtp
  config.action_mailer.smtp_settings = {
    :address              => "wombatdb.com",
    :domain               => "wombatdb.com",
    :enable_starttls_auto => false,
    :openssl_verify_mode => OpenSSL::SSL::VERIFY_NONE
  }
  ...
end

rails主机也是邮件主机，他们有互联网域名'wombatdb.com'。如果我去生产 rails 控制台，我可以像这样读出配置：

rails@wombatdb:~/wombat$ bin/rails c production
Loading production environment (Rails 4.2.7.1)
irb(main):001:0> ActionMailer::Base.default_url_options
=> {:host=>"wombatdb.com"}

有什么可能出错的想法吗？我重启了 nginx & unicorn 服务 97 次。

rails 4.2.7.1 ruby2.3.0

Answer 1

一切似乎都是正确的，你确定你已经在生产模式下启动了应用程序吗？尝试在 development.rb 上使用相同的配置并重试，关闭该选项。

default_url_options 的语法

syntax for default_url_options

ruby-on-rails

actionmailer