angularjs - 如何将 ng-select group by 用于 bool 值，以及订单和标签？

Question

我有一些数据:

0: {id: 1, name: "hhh", description: "hhh", isPopular: false,…}
1: {id: 2, name: "bbb", description: "bbb", isPopular: true,…}
2: {id: 3, name: "ccc", description: "ccc", isPopular: false,…}
3: {id: 4, name: "ddd", description: "ddd", isPopular: true,…}
4: {id: 5, name: "aaa", description: "aaa", isPopular: false,…}
5: {id: 6, name: "ggg", description: "ggg", isPopular: false,…}

我想出现在 ng-select 中:

Popular
bbb
ccc
The rest
aaa
ccc
ggg
hhh

所以我用过

<select ng-selected="true"
    ng-options="category.name group by category.isPopular for category in ctrl.categories |
        orderBy: ['-isPopular','name']"
    ng-model="myModel.category">
</select>

然而这是返回:

aaa
ccc
ggg
hhh
true
bbb
ccc

如何标记组并按组排序？

Answer 1

group by需要传入组名。例如:

<select ng-selected="true"
    ng-options="category.name group by category.isPopular ? 'Popular' : 'The rest' for category in ctrl.categories |
        orderBy: ['-isPopular','name']"
    ng-model="myModel.category">
</select>