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Why doesn't ng-click work in my directive and how do I add a toggle class?

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清酒与你
清酒与你 2021-01-15 15:47

I\'ve created a directive in Angular that looks like this:

angular.module(\'msfApp\')
    .directive(\'listitem\', function () {
        return {
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3条回答
  • 慢半拍i
    2021-01-15 16:10

    1) Problem is the isolated scope. You cannot see the function in the controller scope. One solution is to pass the function reference to the directive:

    http://plnkr.co/edit/GorcZZppa8qcIKbQAg2v?p=preview

    <body ng-controller="ItemController">
  <listitem item="item" item-click="toggleInBasket(item)"></listitem>
</body>

    in the directive:

    scope: {
    'item': '=',
    'itemClick': '&'
}

    and in the template:

    <div class="tsProductAttribute" ng-click="itemClick(item)">

    2) Create another function in the directive to toggle selected state and call the controller function:

    angular.module('msfApp').directive('listitem', function () {
  return {
    templateUrl: 'listitem.html',
    restrict: 'E',
    scope: {
      'item': '=',
      'itemClick': '&'
    },
    link: function(scope, iElement, iAttrs) {
      scope.selected = false;
      scope.toggleState = function(item) {
        scope.selected = !scope.selected;
        scope.itemClick(item);
      }
    }
  }
});

    and toggle the class in the template:

    <div class="tsProductAttribute" 
    ng-class="{'tsProductAttribute--selected': selected}" 
    ng-click="toggleState(item)">
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  • 一个人的身影
    2021-01-15 16:24

    This is happening because you are using isolated scopes in the directive using scope: { 'item': '=' } which creates a new scope so your ng-click is not able to bind to controller function.

    Kindly refer to below link to call parent function using ng-click

    calling method of parent controller from a directive in AngularJS

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  • 无人及你
    2021-01-15 16:27

    @Macros answer made it work just fine for me! Here's my finished code:

    Directive template file:

    <div    class="tsProductAttribute" 
        ng-class="{'tsProductAttribute--selected': selected}" 
        ng-click="toggleState(item)">

    <span class="tsProductAttribute-image">
        <img ng-src="{{variantImage}}">
    </span>
    <span class="tsProductAttribute-desc">{{item.productName}}</span>
    <select ng-model="variantImage">
        <option  ng-repeat="variant in item.variants" value="{{variant.image}}">{{variant.name}} - {{variant.listprice.amount}}</option>
    </select>
    <span class="tsProductAttribute-price">{{item.variants[0].listprice.amount}} {{item.variants[0].listprice.entity}}</span>
</div>

    Directive:

    angular.module('msfApp')
.directive('listitem', function () {
    return {
        templateUrl: 'assets/templates/directives/listitem.html',
        restrict: 'E',
        scope: {
            'item': '=',
            'itemClick': '='
        },
        link: function(scope, iElement, iAttrs) {
          scope.selected = false;
          scope.toggleState = function(item) {
            scope.selected = !scope.selected;
            scope.itemClick(item);
          }
        }
    }
});

    Directive implementation:

    <listitem item="item" item-click="toggleInBasket"></listiten>

    Function in the Controller:

    $scope.toggleInBasket = function(item) {
        $scope.basket.toggle(item);

        console.log(basket.get());

    }
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