angularjs – Angular ng – 不需要使用自定义指令

> ng-required用于验证所需的所有输入

但是,它不能使用呈现组合的自定义指令.组合根据传递给它的参数检索项目名为’listId’.然后,它使用ng-repeat在’lookupItems’上迭代.我想有些东西丢失了,比如ngModel.为什么以及如何实施它？

组合指令：

app.directive('combo',function($http) {
    return {
        restrict: 'AE',template: '<div class="input-group"> <select ng-model="selectedItem">' +
            '<option  ng-repeat="option in lookupItems" value={{option.ListValueID}}>{{option.Translation.Value}}</option></select>' +
            '  {{selectedItem}} </div>',replace: true,scope: {
            listId: '=',defaultItem: '=',selectedItem: '='
        },controller: function($scope) {
            $http({
                method: 'GET',url: '/home/listvalues?listid=' + $scope.listId
            }).then(function(response) {
                $scope.lookupItems = response.data;
            },function(error) {
                alert(error.data);
            });
        },link: function(scope,element,attrs) {}
    };
});

html视图：迭代包含要呈现的控件类型的属性,然后根据’attribute.Required’将其设置为布尔值,这是真的.

<form name="profileAttributesForm" ng-controller="metadataCtrl" class="my-form">
    <div ng-repeat="a in attributes">
        <div ng-if="a.DataType == 1">
            <input type="text" name="attribute_{{$index}}" ng-model="a.Value" ng-required="a.Required" />
            <span ng-show="profileAttributesForm['attribute_{{$index}}'].$invalid">Enter a Text</span> text : {{a.Value}}
        </div>

        <div ng-if="a.DataType == 4">
            <div combo list-id="a.LookUpList" name="attribute_{{$index}}" selected-item="a.Value" ng-required="a.Required"></div>
            <span ng-show="profileAttributesForm['attribute_{{$index}}'].$invalid">lookup Required</span> Value from lookup: {{a.Value}}
        </div>
    </div>
</form>

在表单中迭代的属性示例($scope.attributes),我提供它仅用于说明目的：

[{
    "AttributeID": 1,"DataType": 4,"NodeID": 0,"Name": "Name","Description": null,"LookUpList": 1,"SortAscending": false,"Required": true,"DefaultValue": "1","Order": 1,"Value": ""
},{
    "AttributeID": 3,"DataType": 1,"Name": "Job Title","LookUpList": 0,"DefaultValue": null,"Order": 2,{
    "AttributeID": 4,"Name": "Email","Order": 3,"Value": ""
}]