sass-rails助手"image_url"之间的区别和"asset_url"在Rails 4.0中?

问题描述

我的/app/assets/images目录中有一个jpg，并通过以下CSS将其用作背景.

I have a jpg in my /app/assets/images directory and am using it as a background with the following CSS.

body {
  background-image: image_url('metal_texture.jpg')
}

asset_url帮助器在这种情况下也可以使用.由于Rails 4资产管道不关心文件放置在/app/assets中的哪个目录下，是否有理由使用image_url和asset_url?

The asset_url helper also works in this case. Since the Rails 4 asset pipeline doesn't care which directory in /app/assets that the file is placed, is there a reason to use image_url vs asset_url?

推荐答案

源代码: 图像网址 ， asset_url

Source code: image_url, asset_url

image_url 实际上调用了 asset_url 并传递了一个特定选项: {type::image} 并且 compute_asset_path 根据该 option [:type]

image_url actually calls asset_url passing one specific option: {type: :image}And compute_asset_path finds asset directory based on that option[:type]

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