AngularJS:在element.append中添加ng-click [英] AngularJS: Adding ng-click within element.append

问题描述

在我的指令中，我有以下代码，这些代码将用于连续追加到html元素.

//Establishes the type of question and therefore what should be displayed
app.directive('questionType', function ($http, $compile) {
    return {
        restrict: 'A',    
        link: function (scope, element, attr, model) {

            switch (scope.Question.inputType) {
                case 'checkbox':
                    //element.append('<input type="checkbox" ng-model="Question.checked"/><button ng-if="input.checked" >X</button>');
                    break;
                case 'text':
                    element.append('<button class="btn btn-info" ng-click="selectProperties()" title="Assign this user"><span class="glyphicon glyphicon-user"></span>Assignment</button>');
                    break;
            }
        }
    };
});

因此，当我单击按钮时，应该调用selectproperties函数，该函数位于要附加的元素周围的控制器内.但是，它没有被调用，并且我知道该函数可以正常工作，因为如果我将此按钮代码直接放在html页面中，它将起作用.

我已经看到使用$ compile是解决此问题的一种方法，但是当我使用它时，它只会导致我的网页冻结，并且控制台中不会出现任何错误.

我尝试了几种其他方法，例如将带有该方法的控制器添加到我的指令中-

    controller: function ($scope, $element) {
        $scope.selectProperties = function () {
            aler('test');
        }
    }

但是这也不起作用.而且我需要能够使用函数调用来更新主控制器中的对象，所以我不确定是否可以那样做.

有什么想法吗?

解决方案

您应该compile html将之类的directives绑定到范围属性.其他副角度指令将不会绑定到范围属性.

var strElm = '<button class="btn btn-info" ng-click="selectProperties()" title="Assign this user"><span class="glyphicon glyphicon-user"></span>Assignment</button>';
var compiledHtml = $compile(strElm);
element.append(compiledHtml);

和不要从指令中删除$compile 服务

您的代码应类似于

 //Establishes the type of question and therefore what should be displayed
app.directive('questionType', function($http, $compile) {
  return {
    restrict: 'A',
    link: function(scope, element, attr, model) {

      switch (scope.Question.inputType) {
        case 'checkbox':
          //element.append('<input type="checkbox" ng-model="Question.checked"/><button ng-if="input.checked" >X</button>');
          break;
        case 'text':
          var strElm = '<button class="btn btn-info" ng-click="selectProperties()" title="Assign this user"><span class="glyphicon glyphicon-user"></span>Assignment</button>';
          var compiledHtml = $compile(strElm);
          element.append(compiledHtml);
          break;
      }
    }
  };
}); 

Within my directive I have the following code, which will be used to continually append to an html element.

//Establishes the type of question and therefore what should be displayed
app.directive('questionType', function ($http, $compile) {
    return {
        restrict: 'A',    
        link: function (scope, element, attr, model) {

            switch (scope.Question.inputType) {
                case 'checkbox':
                    //element.append('<input type="checkbox" ng-model="Question.checked"/><button ng-if="input.checked" >X</button>');
                    break;
                case 'text':
                    element.append('<button class="btn btn-info" ng-click="selectProperties()" title="Assign this user"><span class="glyphicon glyphicon-user"></span>Assignment</button>');
                    break;
            }
        }
    };
});

So when i click on the button the selectproperties function should be called which is within the controller surrounding the element being appended. However it is not being called, and I know the function works correctly because if i put this button code straight into the html page it will work.

I have seen that using $compile is a way of getting around this, but when i use that it just causes my web page to freeze, and no errors come up in console.

I tried a couple other methods like adding a controller with the method into my directive -

    controller: function ($scope, $element) {
        $scope.selectProperties = function () {
            aler('test');
        }
    }

but this also didn't work. And I need to be able to use the function call to update an object in my main controller so I'm not sure I could do it that way.

Any ideas?

解决方案

You should compile the html to bind the directives like ng-click to scope properties. Other vice angular directives will not bind to the scope properties.

var strElm = '<button class="btn btn-info" ng-click="selectProperties()" title="Assign this user"><span class="glyphicon glyphicon-user"></span>Assignment</button>';
var compiledHtml = $compile(strElm);
element.append(compiledHtml);

and don't remove $compile service from directive,

and your code should be like,

//Establishes the type of question and therefore what should be displayed
app.directive('questionType', function($http, $compile) {
  return {
    restrict: 'A',
    link: function(scope, element, attr, model) {

      switch (scope.Question.inputType) {
        case 'checkbox':
          //element.append('<input type="checkbox" ng-model="Question.checked"/><button ng-if="input.checked" >X</button>');
          break;
        case 'text':
          var strElm = '<button class="btn btn-info" ng-click="selectProperties()" title="Assign this user"><span class="glyphicon glyphicon-user"></span>Assignment</button>';
          var compiledHtml = $compile(strElm);
          element.append(compiledHtml);
          break;
      }
    }
  };
});

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