Question

我正在尝试创建一个Angular 1.6组件，它是输入标记的包装器。我正在创建一个提前类型或自动完成。我必须在html中使用ng-model来创建组件，这很好，但我想要在子输入元素中使用ng模型。使用组件时，您必须使用元素，并且不能像使用指令一样使用属性标记。我已经创建了一个代码笔来说明我想要做的事情。

http://codepen.io/patrickliechty/pen/GWLZeX?editors=1011

我想使用ngController来更新input元素中的值。在代码笔中，如果输入输入，您将看到绑定的模型数据显示在输入元素下方。

以下是代码：

＆＃13;

angular.module('app', ['EntryField']);

angular.module('app').controller('DataController', ['$scope', function($scope) {
  $scope.fieldDataArray = [{"label": "First Name", "content": ""}, {"label": "Last Name", "content": ""}];
  console.log("$scope.fieldDataArray: ", $scope.fieldDataArray)
}]);

angular.module('EntryField', []).component('customAutoComplete', {
  template: '<input type="text" name="input" ng-model="$ctrl.ngModelController.$modelValue" autocomplete="off"/><br>[{{$ctrl.ngModelController.$viewValue}}]',
  require: {
    ngModelController: "ngModel"
  },
  bindings: {},
  controller: 'CustomAutocompleteController'
});

angular.module('EntryField').controller('CustomAutocompleteController', CustomAutoController);

CustomAutoController.$inject = ['$scope', '$element'];

function CustomAutoController($scope, $element) {
  let ctrl = this;
  
  ctrl.$onInit = function() {
    ctrl.ngModelController.$parsers.unshift(function (inputValue) {
      handleInputUpdate(inputValue);
    });
  }


  function handleInputUpdate(inputValue) {
    //Do autocomplete functionality
  }

}

＆＃13;

<html ng-app="app">
  <head></head>
  <body>
    <div>Angular 1.x Auto Complete</div>
    
    <div ng-controller="DataController">
      <div ng-repeat="fieldData in fieldDataArray">
        <div>{{fieldData.label}}</div>
        <custom-auto-complete ng-model="fieldData.content"></custom-auto-complete> 
      </div>
    </div>
  
    <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.6.2/angular.min.js"></script>
  </body>
</html>

＆＃13;

Answer 1

我有一个问题的解决方案非常有效，但我想知道其他人是否有更好的解决方案。

var app = angular.module('app', ['EntryField']);

app.controller('DataController', ['$scope', function($scope) {
  $scope.fieldDataArray = [{
    "label": "First Name",
    "content": ""
  }, {
    "label": "Last Name",
    "content": ""
  }];
  console.log("$scope.fieldDataArray: ", $scope.fieldDataArray);
}]);

angular.module('EntryField', []);

angular.module('EntryField').component('customAutoComplete', {
  template: '<input type="text" name="input" ng-model="$ctrl.fieldData.content" autocomplete="off"/><br>[{{$ctrl.fieldData.content}}]',
  bindings: {
    fieldData: "="
  },
  controller: function($element, $timeout) {
    let ngModelController;
    this.$postLink = function() {
      if (!ngModelController) {
        ngModelController = angular.element($element.find('input')).controller('ngModel');
        ngModelController.$parsers.unshift(function(inputValue) {
          handleInputUpdate(inputValue);
          return inputValue;
        });
       
        function handleInputUpdate(inputValue) {
          console.log("!!!!!!!!!!!!!!!!!Got some input: ", inputValue);
        }
      }      
    }
  }
});

<!DOCTYPE html>
<html ng-app="app">

  <head>
    <meta charset="utf-8" />
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.2/angular.js"></script>
  </head>

  <body>
    <div ng-controller="DataController">
      <div ng-repeat="fieldData in fieldDataArray">
        <div>{{fieldData.label}}</div>
        <custom-auto-complete field-data="fieldData"></custom-auto-complete>
      </div>
    </div>
  </body>

</html>

如何将ng-model从Angular 1.6 Component传递给input元素

1 个答案: