Question

我似乎无法在我的Rails 3应用程序中的控制器之外渲染模板。我所做的谷歌搜索很有帮助，我最终在http://www.swombat.com/rails-rendering-templates-outside-of-a-contro找到了一些有用的信息。然而，这似乎在Rails 3中被打破了。有没有人有任何想法如何解决这个方法或者可能知道更好的方法？

我的方法：

  def render_erb(template_path, params)  
   view = ActionView::Base.new(ActionController::Base.view_paths, {})  

   class << view  
    include ApplicationHelper  
   end  

   view.render(:file => "#{template_path}.html.erb", :locals => params)  
  end

错误：

ActionView::Template::Error: ActionView::Template::Error
    from /Library/Ruby/Gems/1.8/gems/activesupport-3.0.0/lib/active_support/whiny_nil.rb:48:in `method_missing'
    from /Users/mikegerstenblatt/Desktop/bluetrain/lib/test.html.erb:17:in `_lib_test_html_erb__366962844_2173671680_68830'
    from /Library/Ruby/Gems/1.8/gems/actionpack-3.0.0/lib/action_view/template.rb:135:in `send'
    from /Library/Ruby/Gems/1.8/gems/actionpack-3.0.0/lib/action_view/template.rb:135:in `render'
    from /Library/Ruby/Gems/1.8/gems/activesupport-3.0.0/lib/active_support/notifications.rb:54:in `instrument'
    from /Library/Ruby/Gems/1.8/gems/actionpack-3.0.0/lib/action_view/template.rb:127:in `render'
    from /Library/Ruby/Gems/1.8/gems/actionpack-3.0.0/lib/action_view/render/rendering.rb:59:in `_render_template'
    from /Library/Ruby/Gems/1.8/gems/activesupport-3.0.0/lib/active_support/notifications.rb:52:in `instrument'
    from /Library/Ruby/Gems/1.8/gems/activesupport-3.0.0/lib/active_support/notifications/instrumenter.rb:21:in `instrument'
    from /Library/Ruby/Gems/1.8/gems/activesupport-3.0.0/lib/active_support/notifications.rb:52:in `instrument'
    from /Library/Ruby/Gems/1.8/gems/actionpack-3.0.0/lib/action_view/render/rendering.rb:56:in `_render_template'
    from /Library/Ruby/Gems/1.8/gems/actionpack-3.0.0/lib/action_view/render/rendering.rb:26:in `render'
    from /Users/mikegerstenblatt/Desktop/bluetrain/app/models/generated_website.rb:45:in `render_erb'
    from (irb):2

Answer 1

我制作了blog post和gist来解释它。

基本上你需要这样做：

class HelloWorldController < AbstractController::Base
  include AbstractController::Rendering
  include AbstractController::Layouts
  include AbstractController::Helpers
  include AbstractController::Translation
  include AbstractController::AssetPaths
  include ActionController::UrlWriter

  self.view_paths = "app/views"

  def show; end
end

然后：

HelloWorldController.new.show

将返回呈现为String的视图。

Answer 2

您可以使用render_anywhere gem在控制器外部渲染模板。 https://github.com/yappbox/render_anywhere

Answer 3

在Hubert建议的方法的基础上，我在Rails 3.1项目中得到了以下结论。

我需要在普通视图中渲染部分并在资产中重复使用它（在app / assets / javascripts下）

<%
class FauxController < AbstractController::Base
  include AbstractController::Rendering
  # I didn't need layouts, translation or assetpaths, YMMV
  include AbstractController::Helpers
  include Rails.application.routes.url_helpers
  helper MyHelper # the partial references some helpers in here 

  # Make sure we can find views:
  self.view_paths = Rails.application.config.paths["app/views"]

  def show
    render :partial => "/my_controller/my_partial.js"
  end
end

%>
<%= FauxController.new.show %>

如何在Rails 3中的控制器外渲染模板？

3 个答案: