Angularjs:ng-options group by

Question

我有这个一级树的情况:

<select ng-model="tipost" 
        ng-options="tip.DESC group by tip.TIPIS for tip in tipall"><br>
</select>

json在哪里:

[
  {"ID":"1", "IDPARENT":"0", "TIPIS":"", "DESC":"GroupName1"},
  {"ID":"2", "IDPARENT":"1", "TIPIS":"GroupName1", "DESC":"CHILDNAME1"},
  {"ID":"3", "IDPARENT":"0", "TIPIS":"", "DESC":"GroupName2"}
]

问题是这会与他们的 child 一起创建 optgroups 但重复
根源也是:

- GroupName1
- GroupName2
[ GroupName1 ]
- CHILDNAME1
[ GroupName2 ]

我想生产:

[ GroupName1 ]
- CHILDNAME1
[ GroupName2 ]

Answer 1

如果您将 json 更改为这样的内容，则分组不太像这样:

[
 {"ID":"1", "TIPIS":"GroupName1", "DESC":"name"},
 {"ID":"2", "TIPIS":"GroupName1", "DESC":"name1"},
 {"ID":"3", "TIPIS":"GroupName2", "DESC":"name2"},
 {"ID":"4", "TIPIS":"GroupName1", "DESC":"name3"},
]

然后你会得到你想要的分组方式

jsFiddle: http://jsfiddle.net/rtCP3/182/