gruntjs - 供应商 css 图像在连接和缩小后不可用

Question

我正在使用 select2在 angular 项目中(使用自耕农)。 Select2 css 位于以下目录中:

bower_components/select2/select2.css
bower_components/select2/select2.png

css 以下列方式使用 select2.png:background-image: url('select2x2.png')

运行 concat 和 minify 后，我有以下结构:

bower_components/select2/d204997b.select2x2
样式/034d1972.vendor.css

但问题是venodr css的select2部分在styles目录下寻找d204997b.select2x2。

这是我的 GruntJS 文件的一部分:

rev: {
      dist: {
        files: {
          src: [
            '<%= yeoman.dist %>/scripts/{,*/}*.js',
            '<%= yeoman.dist %>/styles/{,*/}*.css',
            '<%= yeoman.dist %>/images/{,*/}*.{png,jpg,jpeg,gif,webp,svg}',
            '<%= yeoman.dist %>/bower_components/select2/{,*/}*.{png,jpg,jpeg,gif,webp,svg}',
            '<%= yeoman.dist %>/styles/fonts/*'
          ]
        }
      }
    },
useminPrepare: {
  html: '<%= yeoman.app %>/index.html',
  options: {
    dest: '<%= yeoman.dist %>'
  }
},

usemin: {
  html: ['<%= yeoman.dist %>/{,*/}*.html'],
  css: ['<%= yeoman.dist %>/styles/{,*/}*.css'],
  options: {
    assetsDirs: ['<%= yeoman.dist %>' ,'<%= yeoman.dist %>/images' , '<%= yeoman.dist %>/bower_components/select2']
  }
}

谢谢

Answer 1

我找不到这样做的好方法。我所做的是使用 grunt 任务 grunt-replace 来修复所有 css 图像路径。

咕噜咕噜的任务

/**
 * Replaces image paths in CSS to match ../img. Select2 is the only css file this is needed for so far.
 * Others can be added.
 */
replace: {
    build: {
        src: ['<%= build %>/assets/lib/css/select2.css'],
        overwrite: true,
        replacements: [
            {
                from: /url\('(?!\.)/g,
                to: 'url(\'../img/'
            },
            {
                from: /url\((?!\')/g,
                to: 'url(\'../img/'
            },
            {
                from: /..\/images\//g,
                to: '../img/'
            },
            {
                from: /(png|gif|jpg)(?=\))/g,
                to: '$1\''
            }
        ]
    }
}

我还将所有 select2 图像复制到文件夹“img”中。只要任务“to:”匹配，该部分就可以是您想要的任何内容。