Question

这是我的Gruntfile的修剪版本：

module.exports = function(grunt) {

    grunt.config.init({

        folder_list: {
            options: {
                files: false
            },
            files: {
                src: (function() {
                    // some logic here that gets the folders to parse
                }()),
                dest: '.tmp/folderlist.json'
            }
        },

        copy: {
            // Makes a backup of all the views files
            backup: {
                files: grunt.folders.backup
            }
        }

    });

    grunt.loadNpmTasks('grunt-folder-list');
    grunt.loadNpmTasks('grunt-contrib-copy');

    grunt.registerTask('parse_folders', 'Parsing the generated folder list!', function () {

        var folderJSON = grunt.file.readJSON('.tmp/folderlist.json'),
            backupList = [];

        for (var i = 0, total = folderJSON.length; i < total; i++) {

            var dir = folderJSON[i].location;

            // list of folders for the backup task
            backupList[i] = {
                expand: true, flatten: true, filter: 'isFile',
                src: dir + '/*.php',
                dest: dir + '/bak/'
            };
        }

        grunt.folders = {
            backup: backupList
        };

        /* It gives me something like that:
        backupList: [ 
            { 
              expand: true,
              flatten: true,
              filter: 'isFile',
              src: 'Path/To/My/Files/*.php',
              dest: 'Path/To/My/Files/bak/' 
            },
            { 
              expand: true,
              flatten: true,
              filter: 'isFile',
              src: 'Other/Path/To/My/Files/*.php',
              dest: 'Other/Path/To/My/Files/bak/' 
            },
            // etc.
        ]

         */

    });

    grunt.registerTask('test', 'Test', function () {
        console.log(grunt.folders.backup);
    });

    grunt.registerTask('default', 'Asset Compiler', function () {

        grunt.task.run('folder_list');
        grunt.task.run('parse_folders');
        grunt.task.run('test');
        grunt.task.run('copy:backup');

    });

};

简而言之：

“folder_list”任务生成一个JSON文件。
“parse_folders”读取JSON文件并生成复制任务所需的对象数组
“测试”任务在控制台中显示grunt.folders.backup包含正确的数据！。
“copy：backup”输出



TypeError：无法读取未定义
的属性“backup”

我做错了什么？

Answer 1

＆＃34; grunt.folder＆＃34;不会在＆＃34; parse_folders＆＃34;之外访问。任务和咕噜声任务都不符合返回数据的要求。

在任务之间共享信息的一种好方法是使用grunt.config，它是grunt设置的全局键值全局空间，然后以这种方式检索配置＆＃34;＆＃39;＆lt; ％= backupList％＆gt;＆＃39;＆＃34;。

module.exports = function(grunt) {

grunt.config.init({

    folder_list: {
        options: {
            files: false
        },
        files: {
            src: (function() {
                // some logic here that gets the folders to parse
            }()),
            dest: '.tmp/folderlist.json'
        }
    },

    copy: {
        // Makes a backup of all the views files
        backup: {
            files: '<%= backupList %>'
        }
    }

});

grunt.loadNpmTasks('grunt-folder-list');
grunt.loadNpmTasks('grunt-contrib-copy');

grunt.registerTask('parse_folders', 'Parsing the generated folder list!', function () {

    var folderJSON = grunt.file.readJSON('.tmp/folderlist.json'),
        backupList = [];

    for (var i = 0, total = folderJSON.length; i < total; i++) {

        var dir = folderJSON[i].location;

        // list of folders for the backup task
        backupList[i] = {
            expand: true, flatten: true, filter: 'isFile',
            src: dir + '/*.php',
            dest: dir + '/bak/'
        };
    }

    grunt.config.set("backupList", backupList);

    /* It gives me something like that:
    backupList: [ 
        { 
          expand: true,
          flatten: true,
          filter: 'isFile',
          src: 'Path/To/My/Files/*.php',
          dest: 'Path/To/My/Files/bak/' 
        },
        { 
          expand: true,
          flatten: true,
          filter: 'isFile',
          src: 'Other/Path/To/My/Files/*.php',
          dest: 'Other/Path/To/My/Files/bak/' 
        },
        // etc.
    ]

     */

});

grunt.registerTask('test', 'Test', function () {
    console.log(grunt.folders.backup);
});

grunt.registerTask('default', 'Asset Compiler', function () {

    grunt.task.run('folder_list');
    grunt.task.run('parse_folders');
    grunt.task.run('test');
    grunt.task.run('copy:backup');

});

};

请参阅文档：http://gruntjs.com/api/grunt.config

如何在其他grunt任务中使用grunt-folder-list生成的结果

1 个答案: