Question

我需要将unflattened数据转换为正确的格式。有人可以帮我搞定吗？这是一个JSFiddle： http://jsfiddle.net/kawells/vse7fbn3/4/

  var arr = [{"id":"33155","comment":"Program 02 - Student Care - Library training","isfreetext":"0","snapshotfactorid":"1","ssprogramname":"Student Care","ssprogramnumber":"2","ssfactorname":"","ssfactornumber":"","isselected":false,"reportcommentid":"13738"},
{"id":"33154","comment":"Program 02 - Student Care - Library book acquired ","isfreetext":"0","snapshotfactorid":"1","ssprogramname":"Student Care","ssprogramnumber":"2","ssfactorname":"","ssfactornumber":"","isselected":false,"reportcommentid":"13737"},
{"id":"33656","comment":"Program 09 - Communications Check  Communications Check Student addressed","isfreetext":"0","snapshotfactorid":"2","ssprogramname":"Communication","ssprogramnumber":"9","ssfactorname":"","ssfactornumber":"","update_id":"1415294556708","isselected":false,"reportcommentid":"14234"},
{"id":"33658","comment":"Program 09  Communications Check - counselling conducted weekly for Student ","isfreetext":"0","snapshotfactorid":"2","ssprogramname":"Communication","ssprogramnumber":"9","ssfactorname":"","ssfactornumber":"","isselected":false,"reportcommentid":"14236"}]

grouped = _.map(_.groupBy(arr, 'ssprogramnumber'), function(b) {
    return _.extend(_.pick(b[0], 'ssprogramnumber', 'ssprogramname'), {
        factors: _.map(b, function(elem) {
            return _.pick(elem, 'snapshotfactorid', 'comment')
        })
    });
});

    document.body.innerHTML = "<pre>" + (JSON.stringify(grouped, null, " "))

应该看起来像：

[
 {
  "ssprogramnumber": "2",
  "ssprogramname": "Student Care",
  "factors": [
   {
    "snapshotfactorid": "1",
    comments:[{id:33155,"comment": "Program 02 - Student Care - Library training"},
               {id:33154,"comment": "Program 02 - Student Care - Library book acquired "}]
   }
  ]
 },
 {
  "ssprogramnumber": "9",
  "ssprogramname": "Communication",
  "factors": [
   {
    "snapshotfactorid": "2",
     comments:[{id: 33656 ,"comment": "Program 09 - Communications Check  Communications Check Student addressed"},
               {id:33658,"comment": "Program 09  Communications Check - counselling conducted weekly for Student "}]
   }
  ]
 }
]

---回答第二个问题 - 答案 - 对于那些可能需要了解的人，请参阅下文。

var programgroups = _.groupBy（arr，＆＃39; ssprogramnumber＆＃39;）;

var result = _.map（programgroups，function（program）{

var snapshotgroups = _.groupBy(program, 'snapshotfactorid');

return {
    ssprogramnumber: program[0].ssprogramnumber,
    ssprogramname: program[0].ssprogramname,
    factors: _.map(snapshotgroups, function(snapshotfactor){

        return {

            snapshotfactorid: snapshotfactor[0].snapshotfactorid, 
            ssfactornumber: snapshotfactor[0].ssfactornumber,
             ssfactorname: snapshotfactor[0].ssfactorname,
            comments: _.map(snapshotfactor, function(comment){
                return _.pick(comment, 'id', 'comment');
            })
        }
    })
}

}）;

Answer 1

这应该做你想要的：

var programgroups = _.groupBy(arr, 'ssprogramnumber');

var result = _.map(programgroups, function(program){

    var snapshotgroups = _.groupBy(program, 'snapshotfactorid');

    return {
        ssprogramnumber: program[0].ssprogramnumber,
        ssprogramname: program[0].ssprogramname,
        factors: _.map(snapshotgroups, function(snapshotgroup, snapshotfactorid){
            return {
                snapshotfactorid: snapshotfactorid,
                comments: _.map(snapshotgroup, function(comment){
                    return _.pick(comment, 'id', 'comment');
                })
            }
        })
    }
});

使用Underscore的UnFlatten数组

1 个答案: