ruby-on-rails – 如何处理带有公寓宝石的电子邮件中的网址

# app/models/action_dispatch_routing_subdomain_extension.rb

module ActionDispatch::Routing

  module RouteSetExtensions

    # This allows lambdas as subdomain parameter for `default_url_options`:
    #
    #    config.action_mailer.default_url_options = {
    #      host: 'example.com',#      protocol: 'https',#      subdomain: lambda { ... }
    #    }
    #
    def url_for(options,route_name = nil,url_strategy = ActionDispatch::Routing::RouteSet::UNKNOWN)

      if options[:subdomain].respond_to? :call
        options[:subdomain] = options[:subdomain].call
      end

      if Rails.application.config.action_mailer.default_url_options[:subdomain].respond_to? :call
        options[:subdomain] ||= Rails.application.config.action_mailer.default_url_options[:subdomain].call
      end

      super(options,route_name,url_strategy)

    end
  end

  class RouteSet
    prepend RouteSetExtensions
  end

end

初始化：

# config/initializers/action_dispatch_routing_subdomain_extension.rb
require 'action_dispatch_routing_subdomain_extension'

然后,您可以在子域定义中使用lambda：

# config/environments/production.rb

Rails.application.configure do
  # ...

  config.action_mailer.default_url_options = {
    host: 'example.com',protocol: 'https',subdomain: lambda { Apartment::Tenant.current }
  }
end