Rails 4:image_tag不适用于电子邮件中的图像

Question

这是我的代码:

<p><%= image_tag "/assets/logos/#{@company_name.downcase}_logo.jpg" %></p>

发送电子邮件后,我在电子邮件客户端中查看电子邮件时,图像未显示.它看起来像一个破碎的图像

其他人遇到这个问题？

这是我的 development.rb

MyApp::Application.configure do
  # Settings specified here will take precedence over those in config/application.rb.

  # In the development environment your application's code is reloaded on
  # every request. This slows down response time but is perfect for development
  # since you don't have to restart the web server when you make code changes.
  config.cache_classes = false

  # Do not eager load code on boot.
  config.eager_load = false

  # Show full error reports and disable caching.
  config.consider_all_requests_local       = true
  config.action_controller.perform_caching = false

  # Don't care if the mailer can't send.
  config.action_mailer.raise_delivery_errors = false

  # Print deprecation notices to the Rails logger.
  config.active_support.deprecation = :log

  # Raise an error on page load if there are pending migrations
  config.active_record.migration_error = :page_load

  # Debug mode disables concatenation and preprocessing of assets.
  # This option may cause significant delays in view rendering with a large
  # number of complex assets.
  config.assets.debug = true

  config.action_controller.asset_host = 'localhost:3000'
  config.action_mailer.asset_host = 'http://localhost:3000'
end

工作代码:

<p><%= image_tag("logos/#{@company_name.downcase}_logo.jpg") %></p>

Answer 1

问题出在http\xe2\x80\x8c\xe2\x80\x8b://localhost:3000/lo\xe2\x80\x8c\xe2\x80\x8bgos/elan_logo.jpg. Google 会将此网址中的图像加载到其缓存中。并将https://ci5.googleusercontent.com/proxy/PnNleEdztcmZ97Y2pmx8\xe2\x80\x8c\xe2\x80\x8bmwGjwF2hMIx9009CdiWd\xe2\x80\x8c\xe2\x80\x8bTaQy4n_1LunBEB86hfud\xe2\x80\x8c\xe2\x80\x8boeFGYYzGDog0NQr6skhr\xe2\x80\x8c\xe2\x80\x8bftog=s0-d-e1-ft#http\xe2\x80\x8c\xe2\x80\x8b://localhost:3000/lo\xe2\x80\x8c\xe2\x80\x8bgos/elan_logo.jpg正确显示图像。

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但谷歌无法访问本地主机。

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你应该改变config.action_mailer.asset_host = 'http://your_active_domain.com'

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