ngMessages在指令模板中不起作用

Question

我的ngMessages在我的指令模板中不起作用!

我有一个指令myInput与模板和链接功能,模板函数内部创建一个包模板字符串<label>和<input>.

在Link函数中,我使用require: '^form'FormController并检索表单名称.然后我ngMessages在包裹的元素之后放置一个块.

    (function () {
        'use strict';

        angular
            .module('app.components')
            .directive('myInput', MyInput);

        /*@ngInject*/
        function MyInput($compile, ValidatorService, _, LIST_OF_VALIDATORS) {
            return {
                require: '^form',
                restrict: 'E',
                controller: MyInputController,
                controllerAs: 'vm',
                bindToController: true,
                template: TemplateFunction,
                scope: {
                    label: '@',
                    id: '@',
                    value: '=',
                    validateCustom: '&'
                },
                 link: MyInputLink

            };

            function MyInputController($attrs) {
                var vm = this;
                vm.value = '';
                vm.validateClass = '';
                vm.successMessage = '';
                vm.errorMessage = '';
            }

            function TemplateFunction(tElement, tAttrs) {
                return '<div class="input-field">' +
                    '   <label id="input_{{vm.id}}_label" for="input_{{vm.id}}" >{{vm.label}}</label>' +
                    '   <input id="input_{{vm.id}}" name="{{vm.id}}" ng-class="vm.validateClass" type="text" ng-model="vm.value" >' +
                    '</div>';

            }

            function MyInputLink(scope, element, attrs, form){
                var extra = '   <div ng-messages="' + form.$name + '.' + scope.vm.id + '.$error">' +
                    '       <div ng-messages-include="/modules/components/validationMessages.html"></div>' +
                    '   </div>';
                $(element).after(extra);
            }
        }
    })();

用法:

    <h1>Test</h1>
    <form name="myForm">
        <my-input label="My Input" id="input1" value="vm.input1"></my-input>

        -------

        <!-- this block is hardcoded and is working, it does not come from the directive! -->
        <div ng-messages="myForm.input1.$error">
            <div ng-messages-include="/modules/components/validationMessages.html"></div>
        </div>

    </form>

Answer 1

不要将 ngMessages 块添加到函数内link，而是将其添加到compile函数内。

link由于缺少 ，它不像功能中那样方便FormController，但它可以工作:-)

这里是代码：

    compile: function(tElement, tAttrs){
        var name = tElement.closest('form').attr('name'),
                   fullFieldName = name + '.' + tAttrs.id; // or tAttrs.name
        var extra = '<div ng-messages="' + fullFieldName + '.$error">' +
                    '    <div ng-messages-include="/modules/components/validationMessages.html"></div>' +
                    '</div>';
        $(element).after(extra);