Question

我有controller个$scopes。我需要在自定义过滤器中访问其中一个$ scope：

app.controller('AppController',
    function($scope) {
      $scope.var1 = 'Some data1';
      $scope.var2 = 'Some data2';
    }
  );

app.filter('myCustomFilter', function ($filter) {

  return function (date) {
    var date = date;
  };
});


<tr ng-repeat="data in MyData" ng-class="{true: 'green', false:'red'}[data.Date | myCustomFilter]">

</tr>

如何将$ scope.var1传递给我的myCustomFilter ??

Answer 1

app.filter('myCustomFilter', function ($filter) {
  return function (date, scope) {   // add scope here
    var date = date;
  };
});

ng-class="{true: 'green', false:'red'}[data.Date | myCustomFilter:this]">

Answer 2

您必须向过滤器提供所需的范围属性。

你可以这样做：

过滤

app.filter('myCustomFilter', function ($filter) { return function (date,myVar1) { /* Do some stuff with myVar1 */ }; });

<强> HTML：

<tr ng-repeat="data in MyData" ng-class="{true: 'green', false:'red'}[data.Date | myCustomFilter:var1]"> </tr>

Answer 3

var app = angular.module('app', []);


app.controller('AppController',
  function($scope) {
    $scope.var1 = 2;
    $scope.var2 = 3;

    $scope.MyData = [{
      Date: 1
    }, {
      Date: 2
    }, {
      Date: 3
    }]

  }
);

app.filter('myCustomFilter', function($filter) {

  return function(date, scopeValue) {
    var date = date;
    return date * scopeValue
  };
});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>

<body>
  <div ng-app="app">
    <div ng-controller="AppController">

      <li ng-repeat="data in MyData">
     Date:  {{data.Date}} | Date after myCustomFilter: {{data.Date | myCustomFilter : var1}}
      </li>
    </div>
  </div>


</body>

AngularJS - 从自定义过滤器中的控制器访问$ scope

3 个答案: