3

我正在开发 Railtie(gem),用于嵌入 YouTube、Vimeo 等视频。

在这个 gem 中我想要一个视图助手,这样我就可以调用 embed_video(embeddable, width, height)

所以我创建了助手作为助手,它可以工作,但我想重构它以使用部分来使其更清洁,但我发现很难做到这一点。

帮手:

module ViewHelpers
  def embed_video(embeddable, width, height)
    if embeddable.video_on_youtube?
      content_tag :iframe, nil, width: width, height: height,
        src: "//www.youtube.com/embed/#{embeddable.video_id}",
        allowfullscreen: true, frameborder: 0
    elsif embeddable.video_on_vimeo?
      content_tag :iframe, nil, width: width, height: height,
        src: "//player.vimeo.com/video/#{embeddable.video_id}",
        webkitallowfullscreen: true, mozallowfullscreen: true,
        allowfullscreen: true, frameborder: 0
    elsif embeddable.video_on_dailymotion?
      content_tag :iframe, nil, width: width, height: height,
        src: "//www.dailymotion.com/embed/video/#{embeddable.video_id}",
        webkitallowfullscreen: true, mozallowfullscreen: true,
        allowfullscreen: true, frameborder: 0
    elsif embeddable.video_on_veoh?
      %Q{
        <object width='#{width}' height='#{height}' id='veohFlashPlayer' name='veohFlashPlayer'>
          <param name='movie' value='http://www.veoh.com/swf/webplayer/WebPlayer.swf?version=AFrontend.5.7.0.1446&permalinkId=#{embeddable.video_id}&player=videodetailsembedded&videoAutoPlay=0&id=anonymous'></param>
          <param name='allowFullScreen' value='true'></param>
          <param name='allowscriptaccess' value='always'></param>
          <embed src='http://www.veoh.com/swf/webplayer/WebPlayer.swf?version=AFrontend.5.7.0.1446&permalinkId=#{embeddable.video_id}&player=videodetailsembedded&videoAutoPlay=0&id=anonymous' type='application/x-shockwave-flash' allowscriptaccess='always' allowfullscreen='true' width='#{width}' height='#{height}' id='veohFlashPlayerEmbed' name='veohFlashPlayerEmbed'>        </embed>
        </object>
      }.html_safe
    #
    # And more providers...
    #
  end
end

使用部分我想这样写:

module ViewHelpers
  def embed_video(embeddable, width, height)
    if embeddable.video_on_youtube?
      render 'youtube', embeddable: embeddable, width: width, height: height
    elsif embeddable.video_on_veoh?
      render 'veoh'#...etc
    end
  end
end

我尝试的解决方案:

  • 创建一个文件夹: lib/embeddable/partials

  • 为 veoh 添加部分: lib/embeddable/partials/_veoh.html.erb

在 railtie.rb 添加视图路径

module Embeddable
  class Railtie < Rails::Railtie
    # ...load view helpers... #

    initializer 'embeddable.add_autoload_paths', :before => :set_autoload_paths do |app|
      app.config.autoload_paths << app.root.join("lib/embeddable/partials").to_s
    end

    # My attempt at adding the partials to the view path
    initializer 'embeddable.add_view_paths', :after => :add_view_paths do |app|
      ActiveSupport.on_load(:action_controller) do
        append_view_path app.root.join("lib/embeddable/").to_s
      end
    end
  end
end

当我尝试渲染视图时,出现以下错误:

ActionView::MissingTemplate: Missing partial partials/veoh with {:locale=>[:nb], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :coffee, :rabl, :haml]}. Searched in:
  * "/home/me/Arbeid/the_application/app/views"
  * "/home/me/.rvm/gems/ruby-2.1.0/gems/kaminari-0.15.1/app/views"
  * "/home/me/Arbeid/the_application/lib/embeddable"
4

2 回答 2

3

经过大量的跟踪和错误后,我设法让它工作。这是我必须做的:

我改变了这个:

initializer 'embeddable.add_view_paths', :after => :add_view_paths do |app|
  ActiveSupport.on_load(:action_controller) do
    append_view_path app.root.join("lib/embeddable/").to_s
  end
end

进入这个:

initializer 'embeddable.add_view_paths', :after => :add_view_paths do |app|
  ActiveSupport.on_load(:action_controller) do
    append_view_path "#{Gem.loaded_specs['embeddable'].full_gem_path}/lib/embeddable"# <- this is the change
  end
end

现在我可以像这样从助手渲染部分:

render 'partials/youtube', id: video_id, width: width, height: height
于 2014-05-21T10:10:04.267 回答
1

我知道这不是您问题的直接答案,但与其重新发明轮子,我宁愿建议使用 AutoHTML gem:

auto_html 是一个 Rails 扩展,用于将 URL 转换为适当的资源(图像、链接、YouTube、Vimeo 视频……)。如果您不想用丰富的 HTML 编辑器或标记代码打扰访问者,但您仍然希望允许他们在您的网站上嵌入视频、图像、链接等,那么这是一个完美的选择,只需粘贴 URL。

https://github.com/dejan/auto_html

要直接回答您的问题,我认为问题在于您混淆了自动加载路径和查看路径。

你应该有

app.config.autoload_paths << app.root.join("lib/embeddable").to_s

append_view_path app.root.join("lib/embeddable/partials").to_s
于 2014-05-20T10:51:12.467 回答