我在Rails 7项目中有这个Mailer：

# app/mailers/quote_mailer.rb

class QuoteMailer < ApplicationMailer

  def quote_mail(quote)
    @quote = quote
    @user = quote.user
    @client = quote.client
    @account = quote.account
    I18n.with_locale(@quote.locale) do
      mail(
        :from     => @user.email,
        :to       => @client.email,
        :subject  => "New Quote"
      )
    end
  end

end

# app/views/mailer/quote_mail.text.erb

Dear <= @client.name %>

Please click here to download your Quote:

<%= quote_download_url(@quote.token, :namespace => @account.namespace) %>

Best regards

<%= @user.name %>

# config/routes.rb

Rails.application.routes.draw do

  scope ':locale', :locale => /#{I18n.available_locales.join("|")}/ do

    scope ':namespace' do

      resources :quote_downloads, :only => [:show]

    end

  end

end

不幸的是，电子邮件中的链接无法构建并抛出错误：
ActionView：：Template：：Error（No route matches {：action=>“show”，：controller=>“quote_downloads”，：locale=>“VmKHoRSx79AEatcoHtPz8uun”，：namespace=>“volkswagen”}，missing required keys：[：id]，可能不匹配的约束：[：locale]
似乎我的namespace参数混淆了Rails。
如何解决这个问题？