如何使用Cloudinary输出带有转换的URL作为字符串？ [英] How can I use Cloudinary to output a url with transformation as a string?

问题描述

在开始我之前，我可能会说这可能是错误的做法。我想做的是使用 data-属性将包含转换的网址传递给JS。

I'll preface this by saying that may be approaching this incorrectly. What I'm trying to do is pass the url w/transformation into JS using a data- attribute.

目前，我正在使用以下代码生成图像标签：

Currently, I'm using the following to generate the image tag:

= cl_image_tag(image.asset.filename.to_s, transformation: "scroller", :"data-medium" => image.asset.filename.to_s)

产生的内容：

<img src="http://res.cloudinary.com/bucket/image/upload/t_scroller/v1373070863/s1ufy3nygii85ytoeent.jpg" data-medium="s1ufy3nygii85ytoeent.jpg">

我想要做的就是将其输出（使用 t_medium 我已设置的命名过渡）：

What I'd like to be able to do is have it output this (Utilizing the t_medium named transition I've set up):

<img src="http://res.cloudinary.com/bucket/image/upload/t_scroller/v1373070863/s1ufy3nygii85ytoeent.jpg" data-medium="http://res.cloudinary.com/bucket/image/upload/t_medium/v1373070863/s1ufy3nygii85ytoeent.jpg">

当前 cl_image_tag 正在繁重工作通过使用正确配置的URL生成图像标签。很好，但是我似乎找不到任何有关如何将配置的URL作为没有图像标签的字符串输出的文档（用作 data-medium 属性）。我可以手动配置URL，但是我想知道是否有更好的方法？

Currently the cl_image_tag is doing the heavy lifting by generating an image tag with the correctly configured URL. This is great, however I can't seem to find any documentation on how to output a configured URL as a string without the image tag (to use as the data-medium attribute). I could manually configure the URL, but I was wondering if there was a better way?

推荐答案

您可以使用cloudinary_url帮助器进行操作生成没有图片标签的网址。例如：

You can use the cloudinary_url helper to generate the URL without the image tag. For example:

cloudinary_url(image.asset.filename.to_s, transformation: "medium")

如zeantsoi所说，如果您使用的是CarrierWave，还可以将上传器本身作为参数传递：

As zeantsoi said, if you are using CarrierWave, you can also pass the uploader itself as a parameter:

cloudinary_url(image.asset, transformation: "medium")

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