Angular 表单验证 ng-disabled 不起作用

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【中文标题】Angular 表单验证 ng-disabled 不起作用【英文标题】:Angular form validation ng-disabled not working 【发布时间】:2015-04-18 14:08:34 【问题描述】:

我正在尝试在我的表单中使用角度表单验证来撰写博客文章,更具体地说是禁用 ng 的表单。由于某些原因,我无法弄清楚提交按钮没有被禁用,除非所有三个输入字段都有效,否则应该是这样。谢谢您的帮助。

这是我的博客模板

 <div ng-controller='BlgoCtrl'>
  <div class='container'>
    <h1> Teewinot Blgo</h1>
    <div class="row">
      <div class='col-md-12'>
        <form role='form' name='blgoPost' novalidate>
          <div class='form-group'>
          <label for='blgoTitle'>Title</label>
          <input name='title' type="title" class='form-control'  placeholder='Technologies of the Future' required><br>
          <label for='blgoContent'>Content</label>
          <textarea name='content' rows='8' type="content" class='form-control' placeholder='The technical innovations of the future will be diverse and impactful on the individual......' required></textarea><br>
          <label for='blgoPassCode'>PassCode</label>
          <input name='passcode' type="passcode" class='form-control' placeholder='&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;&#8226;' required><br>
          <button type="submit" class='btn btn-primary' ng-disabled="blgoPost.$invalid">Submit Post</button>
          </div>
        </form>
      </div>
    </div>

这是我的 index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Teewinot</title>

  <script src="bower_components/angular/angular.js"></script>

  <script src="bower_components/jquery/dist/jquery.js"></script>
  <script src="bower_components/bootstrap/dist/js/bootstrap.js"></script>
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <script src="bower_components/angular-route/angular-route.js"></script>
  <link href="bower_components/bootstrap/dist/css/bootstrap.css" rel="stylesheet">

</head>

<body ng-app="Teewinot">
<ng-include src="'app/templates/partials/navbar.html'"></ng-include>

<ng-view></ng-view> 
<!-- angular module defintion and reoutes -->
<script src="app/js/app.js"></script>
<script src="app/js/routes.js"></script>
<!-- controllers -->
<script src="app/js/controllers/blog.controller.js"></script>

</body>
</html>

这是我的博客控制器

angular.module('Teewinot').controller('BlgoCtrl', function($scope, $http) 
  'use strict'
);

【问题讨论】:

设置 $invalid 值的代码在哪里? 将模块实例化为angular.module('Teewinot', [])。将一个空数组传递给模块函数。并且,每个输入也要使用ng-model 【参考方案1】:

您在表单的每个字段中都缺少ng-model。请记住,当您当时在任何表单字段上提及 ng-model 时,ng-model 在表单名称对象中创建了具有特定 name 属性的额外对象,然后在表单验证时考虑,例如 $error$valid、@ 987654328@等

由于您的表单nameblgoPost,当角度编译此页面时,它会在内部创建blgoPost 名称范围内的对象。所有分配给它们的nameng-model 的输入字段都被添加到blgoPost 对象中。但是,如果您没有在表单字段中提及 ng-model,那么它将永远不会被添加到 blgoPost 表单对象中。

HTML

<form role='form' name='blgoPost' novalidate="">
    <input name="first" />
    <div class='form-group'>
        <label for='blgoTitle'>Title</label>
        <input name='title' type="title" class='form-control' ng-model="test1" placeholder='Technologies of the Future' required="">
        <br>
        <label for='blgoContent'>Content</label>
        <textarea name='content' rows='8' type="content" ng-model="test2" class='form-control' placeholder='The technical innovations of the future will be diverse and impactful on the individual......' required=""></textarea>
        <br>
        <label for='blgoPassCode'>PassCode</label>
        <input name='passcode' type="passcode" ng-model="test3" class='form-control' placeholder='&#8226;&#8226;&#8226' required="" />
        <br/>
        <button type="submit" class='btn btn-primary' ng-disabled="blgoPost.$invalid">Submit Post</button>
    </div>
</form>

Working Fiddle

【讨论】:

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