如何查找由葫芦生成的图像与黄瓜/水豚？ [英] How do I find an image generated by Dragonfly with Cucumber/Capybara?

问题描述

在如何在带有黄瓜/水豚的页面上找到图片，有人问：

我似乎无法得到这个
如何使用
生成的URL。它们看起来像这样：
/media/BAh_some_long_string_AwIw/12_11_52_810_5x5.jpg?s=7e360000，其中5x5.jpg是我的文件名。我有
尝试类似：
// img [@src =/ media / / ＃{image}？s = *]
不工作。有什么提示？ - Ramon Tayag Feb 25 at 4:18

I can't seem to figure how to get this to work with URLs generated by Dragonfly. They look like this: /media/BAh_some_long_string_AwIw/12_11_52_810_5x5.jpg?s=7e360000, where 5x5.jpg is my file name. I've tried something like: //img[@src="/media//#{image}?s=*"] but it doesn't work. Got any tips? – Ramon Tayag Feb 25 at 4:18

$ b $我有一个类似的问题，只有更糟 - 在我的情况下，生成的图像路径甚至不包括（jpg | png | gif）文件名，他们只有这些真正长的ids： / p>

I have a similar problem, only worse - in my case, the generated image paths don't even include a (jpg|png|gif) file name, they only have these really long ids:

<img src="/media/BAhbB1sHOgZmSSIdNGQ4MTEyOGU3ZjViZmQwZTQ4MDAwMDAyBjoGRVRbCDoGcDoKdGh1bWJJIg0yMDB4MjAwIwY7BlQ" />

（使用dragonfly与mongo / gridfs）

(Using dragonfly with mongo/gridfs)

这些路径被渲染好，但我不知道如何在黄瓜/水豚步骤中找到他们：P

These paths get rendered alright, but I can't figure out how to find them in a Cucumber/Capybara step :P

任何想法？我查看了 Dragonfly的功能，但它们只测试图像本身的呈现

Any ideas? I looked at the Dragonfly's features, but they only test the rendering of the image itself, without detecting it's existence within an html page.

推荐答案

在向Dragonfly的作者（他正在努力使这更容易）：

Answering my own question, after talking to Dragonfly's author (he's working on making this easier):

#route
match '/media/:dragonfly/:file_name', :to => Dragonfly[:images]  

#model
class Store
  include MongoMapper::Document
  key :photo_uid, String
  key :photo_name, String
  image_accessor :photo
end

#view
<%= image_tag @store.photo.thumb('274x207#').url(:suffix => "/#{@store.photo_name}") if @store.photo %>

#cucumber
Then I should see the image "my_photo.png"

Then /^I should see the image "(.+)"$/ do |image|  
  page.should have_xpath("//img[contains(@src, \"#{image}\")]")
end

关键是向模型添加一个[attachment] _name字段，Dragonfly自动填充，然后将其作为后缀传递给url。除了生成的蜻蜓标识符，路由需要允许一个：file_name参数。

The key is adding an [attachment]_name field to the model, which Dragonfly populates automatically, and then passing it on as a suffix to url(). And the routes needs to allow for a :file_name param besides the generated dragonfly identifier.

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