带有TypeScript的AngularJS $ setPristine:表单未定义 [英] AngularJS $setPristine with TypeScript: form is undefined

问题描述

当我尝试从TypeScript使用form.$setPristine时，它不起作用，并且调试显示form未定义.根据我阅读的内容，$scope.formName.$setPristine()会将表格设置为原始格式.为了从控制器访问$scope.formName，我将其作为ng.IFormController属性添加到了我的自定义范围接口中.但是，当我调用$scope.form.$setPristine()时，它不起作用，并且调试显示$scope.form未定义.

When I try to use form.$setPristine from TypeScript, it doesn't work and the debug says form is undefined. According to what I read, $scope.formName.$setPristine() shall set the form to pristine. To access $scope.formName from the controller, I added it to my custom scope interface as an ng.IFormController property. However, when I call $scope.form.$setPristine(), it doesn't work, and debug shows $scope.form is undefined.

TypeScript:

TypeScript:

interface IMyScope extends ng.IScope {
    employees: Array<IEmployee>;
    employeeToAdd: IEmployee;
    addEmployee(): void;
    form: ng.IFormController;
}

class EmployeeAddController {
    static $inject = ['$scope', 'Employees'];

    constructor(
        $scope: IMyScope,
        $modalInstance: ng.ui.bootstrap.IModalServiceInstance,  
        Employees: IUpdateableResourceClass<IUpdateableResource>
    ) {
        $scope.employees = new Array<IEmployee>();

        $scope.employeeToAdd = {
            Name: '',
            Email: ''
        };

        $scope.addEmployee = function () {
            Employees.save(null, $scope.employeeToAdd, function (employee: IEmployee) {
                $scope.employees.push(employee);
                $scope.employeeToAdd.Email = '';
            $scope.employeeToAdd.Name = '';
                $scope.form.$setPristine(); // $scope.form is undefined
            });
        };
    }
} 

HTML:

<form role="form" class="form-inline" name="form">
    <div class="form-group" ng-class="{ 'has-error': form.name.$dirty && form.name.$invalid }">
        <input type="text" class="form-control" ng-model="employeeToAdd.Name" name="name" required>
    </div>
    <div class="form-group" ng-class="{ 'has-error': form.email.$dirty && form.email.$invalid }">
        <input type="email" class="form-control" ng-model="employeeToAdd.Email" name="email" required>
    </div>
    <button type="button" class="btn btn-default" ng-click="addEmployee()" ng-disabled="form.$invalid">Add</button>
</form>

推荐答案

尽管Sobieck00的解决方案也可以工作，但是由于stevuu的建议，我已经对其进行了调试，并找到了一种无需传递表单引用的方法. form可以作为$scope.$$childTail.form来访问:

Although Sobieck00's solution works as well, thanks to stevuu's suggestion, I have debugged it and found a way to do it without having to pass the form reference. form can be accessed as $scope.$$childTail.form:

interface IMyScope extends ng.IScope {
    employees: Array<IEmployee>;
    employeeToAdd: IEmployee;
    addEmployee(): void;
    $$childTail: any; // Add this to access $$childTail in current scope
}

然后在$scope.addEmployee()中使用以下命令将其重置:

Then in $scope.addEmployee() reset it with:

$scope.$$childTail.form.$setPristine();

这篇关于带有TypeScript的AngularJS $ setPristine:表单未定义的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！