我无法弄清楚为什么 ng-options 指令在我的示例中不起作用:
http://plnkr.co/edit/wwAIDHl6U7YaScRzIKAY
应用程序.coffee
app = angular.module('plunker', [])
app.controller 'MainCtrl', ($scope) ->
$scope.query = {}
$scope.types = ["Test", "Demo", "Numeric", "ABC"]
$scope.items = [{typ: "Test"},{typ: "Test"},{typ: "Demo"}, {typ: "Numeric"}]
app.directive 'colFilterable', ($parse) ->
{
restrict: 'A',
scope: {
colFilterable: '=',
filterableKey: '@',
filterableOptions: '='
filterableOptionsArg: '@',
},
compile: (el, $scope) ->
if $scope.filterableKey
key = $scope.filterableKey
else
key = el.text().toLowerCase()
options = 'label for value in filterableOptions'
if $scope.filterableOptionsArg
options = $scope.filterableOptionsArg
el.append('<select class="col-filterable" ng-model="filter" ng-options="' + options + '"><option></option></select>')
return ($scope, el, attrs) ->
$scope.$watch 'filter', () ->
$scope.colFilterable[key] = $scope.filter
}
索引.html
<!DOCTYPE html>
<html ng-app="plunker">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>document.write('<base href="' + document.location + '" />');</script>
<script data-require="angular.js@1.2.x" src="https://code.angularjs.org/1.2.25/angular.js" data-semver="1.2.25"></script>
<script src="app.js"></script>
</head>
<body ng-controller="MainCtrl">
<h2>DEMO</h2>
<table>
<thead>
<tr>
<th col-filterable="query" filterable-options="types">
Typ
</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="item in items | filter: query">
<td>{{item.typ}}
</tr>
</tbody>
</table>
<h2>DEBUG</h2>
<p>{{ types }}</p>
<p>{{ query }}</p>
</body>
</html>
我在编译函数中附加了带有 ng-options 的选择(可以传入,但默认为label for value in filterableOptions
),并返回一个链接函数,该函数监视 ng-model 并将数据绑定设置$scope.colFilterable
为$scope.filter
我不能使用模板,因为我想保留元素中当前的内容,并且只想附加这个选择,作为回报应该过滤结果表
编辑:
好吧,似乎这$scope.$watch 'filter'
两种方式都不起作用,结果也不会传播到父范围,所以我重写了它以使用更改事件
http://plnkr.co/edit/qzaf1sBoFuVD8fow0tfA
el.find('select').bind 'change', (event) ->
$scope.colFilterable[key] = this.value
$scope.$apply()
如果我手动编写option
元素,这可行