Angularjs:ng选项分组依据

Question

我有这种一级树的情况：

<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，这会创建带有子对象的optgroup，但也会重复根：

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

我想生产：

[ GroupName1 ]
- CHILDNAME1
[ GroupName2 ]

Answer 1

我在寻找同样的问题，并找到了更好的答案。一个人可以根据需要使用函数返回数据，比如在getGarageName下面的查询中

ng-options="car.id as car.name + ' (' + car.color + ')' group by getGarageName(car.garageId) for car in cars"
// this is the data
cars = [
    {"id": 1, "name": "Diablo", "color": "red", "garageId": 1},
    {"id": 2, "name": "Countach", "color": "white", "garageId": 1},
    {"id": 3, "name": "Clio", "color": "silver", "garageId": 2},
    ...
]
garages = [
    {"id": 1, "name": "Super Garage Deluxe"},
    {"id": 2, "name": "Toms Eastside"},
    ...
]

http://www.wenda.io/questions/2597799/angular-js-select-with-ngoptions-label-the-optgroup.html

Answer 2

这个简单的下拉列表可以显示带组和不带组的项目，也可以将某些项目设置为禁用：下面是plunk：https://plnkr.co/edit/uhsn4lmzssi6rrijPEAp?p=preview

 <select ng-model="ddl.selected"
    ng-options="item.id as item.text group by item.groupName disable when item.enabled===false for item in ddl.items"></select>

Answer 3

分组不是这样工作的，如果您将json更改为以下内容：

[
 {"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，您将按照您想要的方式进行分组

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