angularjs 中的密码检查指令 [英] password-check directive in angularjs

问题描述

我正在编写密码验证指令:

 Directives.directive("passwordVerify",function(){返回 {要求:ngModel"，链接:功能(范围，元素，属性，ctrl){ctrl.$parsers.unshift(function(viewValue){var origin = scope.$eval(attrs["passwordVerify"]);if(origin!==viewValue){ctrl.$setValidity("passwordVerify",false);返回未定义；}别的{ctrl.$setValidity("passwordVerify",true);返回视图值；}});}};});

html:

<input data-ng-model='user.password_verify' type="password" name='confirm_password' placeholder='confirm password' required data-password-verify="user.password">

给定表单中的 2 个密码字段，如果两个密码值相等，则受指令影响的字段有效.问题是它以一种方式工作(即当我在密码验证字段中输入密码时).但是，当原始密码字段被更新时，密码验证不会生效.

知道如何进行双向绑定验证"吗?

解决方案

这应该可以解决:

查看:

<表格名称='表格'><input data-ng-model='user.password' type="password" name='password' placeholder='password' required><div ng-show="form.password.$error.required">必填字段
<input ng-model='user.password_verify' type="password" name='confirm_password' placeholder='confirm password' required data-password-verify="user.password"><div ng-show="form.confirm_password.$error.required">必填字段！

<div ng-show="form.confirm_password.$error.passwordVerify">字段不相等！

</表单

指令

var app = angular.module('myApp', []);app.directive("passwordVerify", function() {返回 {要求:ngModel"，范围: {密码验证:'='},链接:功能(范围，元素，属性，ctrl){范围.$watch(function() {var 组合；if (scope.passwordVerify || ctrl.$viewValue) {组合 = scope.passwordVerify + '_' + ctrl.$viewValue;}回报合并；}, 函数(值){如果(值){ctrl.$parsers.unshift(function(viewValue) {var origin = scope.passwordVerify;如果(原点！== 视图值){ctrl.$setValidity("passwordVerify", false);返回未定义；} 别的 {ctrl.$setValidity("passwordVerify", true);返回视图值；}});}});}};});

I'm writing a password verify directive :

 Directives.directive("passwordVerify",function(){
    return {
        require:"ngModel",
        link: function(scope,element,attrs,ctrl){
            ctrl.$parsers.unshift(function(viewValue){
                var origin = scope.$eval(attrs["passwordVerify"]);
                if(origin!==viewValue){
                    ctrl.$setValidity("passwordVerify",false);
                    return undefined;
                }else{
                    ctrl.$setValidity("passwordVerify",true);
                    return viewValue;
                }
            });

        }
    };
});

html :

<input data-ng-model='user.password' type="password" name='password' placeholder='password' required>
<input data-ng-model='user.password_verify' type="password" name='confirm_password' placeholder='confirm password' required data-password-verify="user.password">

Given 2 password fields in a form, if both password values are equal then the field affected by the directive is valid. The issue is that it works one way (i.e. when I type a password in the password-verify field). However, when the original password field is updated, the password-verify doesn't become valid.

Any idea how I could have a "two way binding verify?"

解决方案

This should solve it:

View:

<div ng-controller='Ctrl'>
   <form name='form'>
      <input data-ng-model='user.password' type="password" name='password' placeholder='password' required>
      <div ng-show="form.password.$error.required">
        Field required</div>
      <input ng-model='user.password_verify' type="password" name='confirm_password' placeholder='confirm password' required data-password-verify="user.password">
      <div ng-show="form.confirm_password.$error.required">
        Field required!</div>
      <div ng-show="form.confirm_password.$error.passwordVerify">
        Fields are not equal!</div>
   </form
</div>

Directive

var app = angular.module('myApp', []);

app.directive("passwordVerify", function() {
   return {
      require: "ngModel",
      scope: {
        passwordVerify: '='
      },
      link: function(scope, element, attrs, ctrl) {
        scope.$watch(function() {
            var combined;

            if (scope.passwordVerify || ctrl.$viewValue) {
               combined = scope.passwordVerify + '_' + ctrl.$viewValue; 
            }                    
            return combined;
        }, function(value) {
            if (value) {
                ctrl.$parsers.unshift(function(viewValue) {
                    var origin = scope.passwordVerify;
                    if (origin !== viewValue) {
                        ctrl.$setValidity("passwordVerify", false);
                        return undefined;
                    } else {
                        ctrl.$setValidity("passwordVerify", true);
                        return viewValue;
                    }
                });
            }
        });
     }
   };
});

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