为什么Ng Repeat不工作，如果按钮从不同的形式调用

why Ng Repeat is not working if button invoked from a different form?

本文关键字：调用 如果 Repeat Ng 工作 为什么 按钮      更新时间：2023-10-02

我有一个html表，其中包含一个ng repeat指令和两个按钮。第一个将打开一个包含新表单的模态，让我创建我的用户，然后当我单击保存时，它将把它添加到列表中。第二个是相同的原始形式，并添加一个用户。

我不明白为什么当我点击第一个不同形式的按钮时，我不能更新ng重复，但第二个是可能的。这是代码：

主页.jsp

<body ng-app="myApp">
    <div class="generic-container" ng-controller="UserController as ctrl">
        <div id="createUserContent.jsp" ng-include="createUserContent"></div>
        <table>
            <tr>
                <td>
                    <button type="button" class="btn btn-primary"
                    ng-click="ctrl.openCreateUser()">Create</button>
                </td>
            </tr>
        </table>
        <table class="table table-hover">
            <thead>
                <tr>
                    <th>ID.</th>
                    <th>Name</th>
                    <th>Address</th>
                    <th>Email</th>
                    <th width="20%"></th>
                </tr>
            </thead>
            <tbody>
                <tr ng-repeat="u in ctrl.users">
                    <td><span ng-bind="u.ssoId"></span></td>
                    <td><span ng-bind="u.firstName"></span></td>
                    <td><span ng-bind="u.lastName"></span></td>
                    <td><span ng-bind="u.email"></span></td>
                </tr>
            </tbody>
        </table>
    </div>
</body>

user_controller.js

'use strict';
App.controller('UserController', function ($scope, UserService, $window, $log, $uibModalStack,
        $uibModal, $rootScope) {
    var self = this;
    self.users = [];
    self.fetchAllUsers = function () {
        console.log('----------Start Printing users----------');
        for (var i = 0; i < self.users.length; i++) {
            console.log('FirstName ' + self.users[i].firstName);
        }
    };
        /**
    this function will not work
    **/
    self.saveUser = function (user) {
        self.users.push(user);
        self.fetchAllUsers();
        $log.log("saving user");
        $uibModalStack.dismissAll();
    };
    /**
    this function works fine
    **/
    self.addNewRow = function () {
        var specialUser = {
                id : 12,
                firstName : 'john',
                lastName: 'travolta',
                homeAddress : {location:'chicago'},
                email : 'trav@email.com'
        };
        self.users.push(specialUser);
        $log.log("saving specialUser");
    };
    self.openCreateUser = function () {
        var modalInstance = $uibModal.open({
                animation : true,
                templateUrl : 'createUserContent',
                controller : 'UserController',
                resolve : {
                    items : function () {
                        return $scope.items;
                    }
                }
            });
        modalInstance.result.then(function (selectedItem) {
            $scope.selected = selectedItem;
        }, function () {
            $log.info('Modal dismissed at: ' + new Date());
        });
    };
    self.fetchAllUsers();
});

createUserContent.jsp

<form role="form" ng-controller="UserController as ctrl" >
    <div class="form-group">
        <label for="FirstName">FirstName</label> <input type="FirstName"
            ng-model="ctrl.user.firstName" class="form-control"
            id="FirstName" placeholder="Enter FirstName" /> <label
            for="lastName">lastName</label> <input type="lastName"
            class="form-control" id="lastName"
            ng-model="ctrl.user.lastName" placeholder="Enter lastName" />
        <label for="email">Email address</label> <input type="email"
            ng-model="ctrl.user.email" class="form-control" id="email"
            placeholder="Enter email" />
    </div>
    <div class="form-group">
        <label for="homeAddressLocation">Home Address</label> <input class="form-control"
            ng-model="ctrl.user.homeAddress.location" id="homeAddressLocation"
            placeholder="homeAddressLocation" />
    </div>
    <div class="form-group">
        <label for="SSOId">SSOId</label> <input class="form-control"
            ng-model="ctrl.user.ssoId" id="SSOId" placeholder="SSOId" />
    </div>
    <button type="submit" class="btn btn-default"
        ng-click="ctrl.saveUser(ctrl.user)">Save</button>
    <button type="submit" class="btn btn-default">Cancel</button>
</form>

因为您的模式模板无法访问您的UserController对象，并且不会显示错误，因为您在模式模板中使用了相同的控制器r，所以作为新Ctrl重新加载时不会引用父Ctrl。

然而，最好使用不同的控制器，并将父controller对象传递给模态controller，然后模态主体可以使用所有父对象。因此，您应该将父对象传递给模态控制器。

当您在主文件中包含createUserContent.jsp弹出文件时，无需在您在模式实例controller : 'Ctrl', 中使用的模式模板中使用ng-controller="UserController as ctrl"

类似：

var modalInstance = $uibModal.open({
      templateUrl: 'createUserContent.jsp',
      controller: 'ModalCtrl', // ModalCtrl for modal
      controllerAs:'modal', // as modal so no need to use in modal template
      size: 'lg',
      resolve: {
        items: function () {
          return $scope.items;
        },
        parent: function(){ // pass self object as a parent to 'ModalCtrl'
                return self;
        }
      }

和类似ModalCtrl的

.controller('ModalCtrl', ['parent', function (parent) {
    this.parent = parent;
}]);

这里使用ModalCtrl作为模态modal，因此您可以访问父对象，如：modal.parent.user

类似模板：

<form role="form" >
    <div class="form-group">
    <label for="FirstName">FirstName</label> <input type="FirstName"
ng-model="modal.parent.user.firstName" class="form-control"
id="FirstName" placeholder="Enter FirstName" />
        .....
        ....
    <button type="submit" class="btn btn-default"
ng-click="modal.parent.saveUser(modal.parent.user)">Save</button>
    <button type="submit" class="btn btn-default">Cancel</button>
    </form>

更多详细信息请访问PLUNKER DEMO

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