如果点击提交,我有一个需要显示验证错误消息的表单。
这是一个有效的plunker
<form name="frmRegister" ng-submit="register();" novalidate>
<div>
<input placeholder="First Name" name="first_name" type="text" ng-model="user.firstName" required />
<span ng-show="frmRegister.first_name.$dirty && frmRegister.first_name.$error.required">First Name is required</span>
</div>
<div>
<input placeholder="Last Name" name="last_name" type="text" ng-model="user.lastName" required />
<span ng-show="frmRegister.last_name.$dirty && frmRegister.last_name.$error.required">Last Name is required</span>
</div>
<div>
<input placeholder="Email" name="email" type="email" ng-model="user.email" required />
<span ng-show="frmRegister.email.$dirty && frmRegister.email.$error.required">Email is required.</span>
<span ng-show="frmRegister.email.$dirty && frmRegister.email.$error.email">Invalid Email address.</span>
</div>
<input type="submit" value="Save" />
<span ng-show="registered">YOU ARE NOW REGISTERED USER</span>
</form>
验证在用户开始进行更改时正常工作。但它没有显示任何错误消息如果点击提交而没有输入任何内容。
有没有想过要实现这个目标?或者以其他方式,当单击“提交”按钮
时,如何使每个输入字段$脏答案 0 :(得分:101)
我找到了这个小提琴http://jsfiddle.net/thomporter/ANxmv/2/,它做了一个很好的技巧来引起控制验证。
基本上,它声明了一个范围成员submitted
,并在您单击提交时将其设置为true。模型错误绑定使用此额外表达式来显示错误消息,如
submitted && form.email.$error.required
<强>更新强>
正如@Hafez's comment所指出的那样(给他一些赞成!),Angular 1.3+ solution就是:
form.$submitted && form.email.$error.required
答案 1 :(得分:12)
由于我使用的是Bootstrap 3,我使用了一个指令: (见plunkr)
var ValidSubmit = ['$parse', function ($parse) {
return {
compile: function compile(tElement, tAttrs, transclude) {
return {
post: function postLink(scope, element, iAttrs, controller) {
var form = element.controller('form');
form.$submitted = false;
var fn = $parse(iAttrs.validSubmit);
element.on('submit', function(event) {
scope.$apply(function() {
element.addClass('ng-submitted');
form.$submitted = true;
if(form.$valid) {
fn(scope, {$event:event});
}
});
});
scope.$watch(function() { return form.$valid}, function(isValid) {
if(form.$submitted == false) return;
if(isValid) {
element.removeClass('has-error').addClass('has-success');
} else {
element.removeClass('has-success');
element.addClass('has-error');
}
});
}
}
}
}
}]
app.directive('validSubmit', ValidSubmit);
然后在我的HTML中:
<form class="form-horizontal" role="form" name="form" novalidate valid-submit="connect()">
<div class="form-group">
<div class="input-group col col-sm-11 col-sm-offset-1">
<span class="input-group-addon input-large"><i class="glyphicon glyphicon-envelope"></i></span>
<input class="input-large form-control" type="email" id="email" placeholder="Email" name="email" ng-model="email" required="required">
</div>
<p class="col-sm-offset-3 help-block error" ng-show="form.$submitted && form.email.$error.required">please enter your email</p>
<p class="col-sm-offset-3 help-block error" ng-show="form.$submitted && form.email.$error.email">please enter a valid email</p>
</div>
</form>
<强>已更新强>
在我的最新项目中,我使用 Ionic ,因此我有以下内容,会自动将.valid
或.invalid
放在{{1}上}}的:
input-item
然后在HTML中:
.directive('input', ['$timeout', function ($timeout) {
function findParent(element, selector) {
selector = selector || 'item';
var parent = element.parent();
while (parent && parent.length) {
parent = angular.element(parent);
if (parent.hasClass(selector)) {
break;
}
parent = parent && parent.parent && parent.parent();
}
return parent;
}
return {
restrict: 'E',
require: ['?^ngModel', '^form'],
priority: 1,
link: function (scope, element, attrs, ctrls) {
var ngModelCtrl = ctrls[0];
var form = ctrls[1];
if (!ngModelCtrl || form.$name !== 'form' || attrs.type === 'radio' || attrs.type === 'checkbox') {
return;
}
function setValidClass() {
var parent = findParent(element);
if (parent && parent.toggleClass) {
parent.addClass('validated');
parent.toggleClass('valid', ngModelCtrl.$valid && (ngModelCtrl.$dirty || form.$submitted));
parent.toggleClass('invalid', ngModelCtrl.$invalid && (ngModelCtrl.$dirty || form.$submitted));
$timeout(angular.noop);
}
}
scope.$watch(function () {
return form.$submitted;
}, function (b, a) {
setValidClass();
});
var before = void 0;
var update = function () {
before = element.val().trim();
ngModelCtrl.$setViewValue(before);
ngModelCtrl.$render();
setValidClass();
};
element
.on('focus', function (e) {
if (ngModelCtrl.$pristine) {
element.removeClass('$blurred');
}
})
.on('blur', function (e) {
if (ngModelCtrl.$dirty) {
setValidClass();
element.addClass('$blurred');
}
}).on('change', function (e) {
if (form.$submitted || element.hasClass('$blurred')) {
setValidClass();
}
}).on('paste', function (e) {
if (form.$submitted || element.hasClass('$blurred')) {
setValidClass();
}
})
;
}
};
}])
并在控制器中:
<form name='form' novalidate="novalidate" ng-submit="auth.signin(form, vm)">
<label class="item item-input item-floating-label">
<span class="input-label">Email</span>
<input type="email" placeholder="Email" ng-model="vm.email" autofocus="true" required
>
</label>
<button ng-if="!posting" type="submit" class="item button-block item-balanced item-icon-right call-to-action">Login<i class="icon ion-chevron-right"></i>
</button>
所以,现在,在CSS中,您可以执行以下操作:
self.signin = function (form, data) {
if (!form.$valid) return;
Authentication.emailLogin(data)
//...
很简单!
答案 2 :(得分:5)
我也有同样的问题,我通过添加一个ng-submit来解决问题,该提交将变量设置为true。
<form name="form" ng-submit="submitted = true" novalidate>
<div>
<span ng-if="submitted && form.email.$error.email">invalid email address</span>
<span ng-if="submitted && form.email.$error.required">required</span>
<label>email</label>
<input type="email" name="email" ng-model="user.email" required>
</div>
<div>
<span ng-if="submitted && form.name.$error.required">required</span>
<label>name</label>
<input type="text" name="name" ng-model="user.name" required>
</div>
<button ng-click="form.$valid && save(user)">Save</button>
</form>
我喜欢使用$提交的想法,我想我已经将Angular升级到1.3;)
答案 3 :(得分:3)
我可以想出两种方法来实现它。
第一个是删除novalidate
以启用浏览器的验证。
其次,当表单无效时,您可以禁用save
按钮
<input ng-disabled="!frmRegister.$valid" type="submit" value="Save" />
希望它有所帮助。
答案 4 :(得分:2)
我使用bootstrap 3的解决方案
http://jsfiddle.net/rimian/epxrbzn9/
<form class="form" name="form" ng-app novalidate>
<div class="form-group">
<input name="first_name"
type="text"
class="form-control"
ng-model="first_name"
placeholder="First Name"
required />
</div>
<div class="form-group">
<input name="last_name"
type="text"
class="form-control"
ng-model="last_name"
placeholder="Last Name"
required />
</div>
<button
type="submit"
class="btn btn-primary btn-large"
ng-click="submitted=true">
Submit
</button>
<div ng-show="submitted && form.$invalid" class="alert alert-danger">
<div ng-show="form.first_name.$error.required">
First Name is Required
</div>
<div ng-show="form.last_name.$error.required">
Last Name is Required
</div>
</div>
</form>
答案 5 :(得分:2)
您只需在提交表单之前检查表单是否脏且有效。查看以下代码。
<form name="frmRegister" data-ng-submit="frmRegister.$valid && frmRegister.$dirty ? register() : return false;" novalidate>
您还可以通过以下更改禁用提交按钮:
<input type="submit" value="Save" data-ng-disable="frmRegister.$invalid || !frmRegister.$dirty" />
这应该有助于你的初步
答案 6 :(得分:2)
这么多复杂的答案。
这是我的简单方法。
基本上,有两种方法可以解决您的问题。
CSS方式:
当您提交表单无论表单是否有效时,Angular都会向表单元素添加ng-submitted
类。
我们可以使用.ng-submitted
来控制我们的元素
e.g。
.error { display: none }
.ng-submitted .error {
display: block;
}
范围方式:
当您提交表单无论表单是否有效时,Angular都会将[your form name].$submitted
设置为true。
<div ng-show="customizedFormName.$submitted">error message</div>
<form name="customizedFormName"></form>
答案 7 :(得分:1)
http://jsfiddle.net/LRD5x/30/一个简单的解决方案。
HTML
<form ng-submit="sendForm($event)" ng-class={submitted:submitted}>
JS
$scope.sendForm = function($event) {
$event.preventDefault()
$scope.submitted = true
};
CSS
.submitted input.ng-invalid:not(:focus) {
background-color: #FA787E;
}
input.ng-invalid ~ .alert{
display:none;
}
.submitted input.ng-invalid ~ .alert{
display:block;
}
答案 8 :(得分:1)
我最喜欢realcrowd的解决方案。
HTML:
<form role="form" id="form" name="form" autocomplete="off" novalidate rc-submit="signup()">
<div class="form-group" ng-class="{'has-error': rc.form.hasError(form.firstName)}">
<label for="firstName">Your First Name</label>
<input type="text" id="firstName" name="firstName" class="form-control input-sm" placeholder="First Name" ng-maxlength="40" required="required" ng-model="owner.name.first"/>
<div class="help-block" ng-show="rc.form.hasError(form.firstName)">{{rc.form.getErrMsg(form.firstName)}}</div>
</div>
</form>
的javascript:
//define custom submit directive
var rcSubmitDirective = {
'rcSubmit': ['$parse', function ($parse) {
return {
restrict: 'A',
require: ['rcSubmit', '?form'],
controller: ['$scope', function ($scope) {
this.attempted = false;
var formController = null;
this.setAttempted = function() {
this.attempted = true;
};
this.setFormController = function(controller) {
formController = controller;
};
this.hasError = function (fieldModelController) {
if (!formController) return false;
if (fieldModelController) {
return fieldModelController.$invalid && this.attempted;
} else {
return formController && formController.$invalid && this.attempted;
}
};
this.getErrMsg=function(ctrl){
var e=ctrl.$error;
var errMsg;
if (e.required){
errMsg='Please enter a value';
}
return errMsg;
}
}],
compile: function(cElement, cAttributes, transclude) {
return {
pre: function(scope, formElement, attributes, controllers) {
var submitController = controllers[0];
var formController = (controllers.length > 1) ? controllers[1] : null;
submitController.setFormController(formController);
scope.rc = scope.rc || {};
scope.rc[attributes.name] = submitController;
},
post: function(scope, formElement, attributes, controllers) {
var submitController = controllers[0];
var formController = (controllers.length > 1) ? controllers[1] : null;
var fn = $parse(attributes.rcSubmit);
formElement.bind('submit', function (event) {
submitController.setAttempted();
if (!scope.$$phase) scope.$apply();
if (!formController.$valid) return false;
scope.$apply(function() {
fn(scope, {$event:event});
});
});
}
};
}
};
}]
};
app.directive(rcSubmitDirective);
答案 9 :(得分:0)
// This worked for me.
<form name="myForm" class="css-form" novalidate ng-submit="Save(myForm.$invalid)">
<input type="text" name="uName" ng-model="User.Name" required/>
<span ng-show="User.submitted && myForm.uName.$error.required">Name is required.</span>
<input ng-click="User.submitted=true" ng-disabled="User.submitted && tForm.$invalid" type="submit" value="Save" />
</form>
// in controller
$scope.Save(invalid)
{
if(invalid) return;
// save form
}
答案 10 :(得分:0)
G45,
我遇到同样的问题,我创建了一个指令,请在下面查看希望它可能有用
指令:
app.directive('formSubmitValidation', function () {
return {
require: 'form',
compile: function (tElem, tAttr) {
tElem.data('augmented', true);
return function (scope, elem, attr, form) {
elem.on('submit', function ($event) {
scope.$broadcast('form:submit', form);
if (!form.$valid) {
$event.preventDefault();
}
scope.$apply(function () {
scope.submitted = true;
});
});
}
}
};
})
HTML:
<form name="loginForm" class="c-form-login" action="" method="POST" novalidate="novalidate" form-submit-validation="">
<div class="form-group">
<input type="email" class="form-control c-square c-theme input-lg" placeholder="Email" ng-model="_username" name="_username" required>
<span class="glyphicon glyphicon-user form-control-feedback c-font-grey"></span>
<span ng-show="submitted || loginForm._username.$dirty && loginForm._username.$invalid">
<span ng-show="loginForm._username.$invalid" class="error">Please enter a valid email.</span>
</span>
</div>
<button type="submit" class="pull-right btn btn-lg c-theme-btn c-btn-square c-btn-uppercase c-btn-bold">Login</button>
</form>
答案 11 :(得分:0)
使用angularjs验证表单的完整解决方案。
HTML如下。
<div ng-app="areaApp" ng-controller="addCtrler">
<form class="form-horizontal" name="fareainfo">
<div class="form-group">
<label for="input-areaname" class="col-sm-2 control-label">Area Name : </label>
<div class="col-sm-4">
<input type="text" class="form-control" name="name" id="input-areaname" ng-model="Area.Name" placeholder="" required>
<span class="text-danger" ng-show="(fareainfo.$submitted || fareainfo.name.$dirty) && fareainfo.name.$error.required"> Field is required</span>
</div>
</div>
<div class="col-sm-12">
<button type="button" class="btn btn-primary pull-right" ng-click="submitAreaInfo()">Submit</button>
</div>
</form>
</div>
AngularJS应用和控制器如下
var areaApp = angular.module('areaApp', []);
areaApp.controller('addCtrler', function ($scope) {
$scope.submitAreaInfo = function () {
if ($scope.fareainfo.$valid) {
//after Form is Valid
} else {
$scope.fareainfo.$setSubmitted();
}
};
});
ng-app =“ areaApp” ng-controller =“ addCtrler”
定义角度应用和控制器
ng-show =“(提交的fareainfo。$ || fareainfo.name。$ dirty)&& fareainfo.name。$ error.required”
以上条件确保了每当用户第一次看到表单时,屏幕上都不会出现任何验证错误,并且在用户对表单进行更改后,它会确保屏幕上显示验证消息。 .name。是输入元素的名称属性。
$ scope.fareainfo。$ valid
在上面的代码中,分段检查每当用户提交表单时表单是否有效。
$ scope.fareainfo。$ setSubmitted();
在上述代码中,segment确保了每当用户提交表单而未执行任何操作时,所有验证消息都会显示在屏幕上。
答案 12 :(得分:-3)
试试这段代码:
<INPUT TYPE="submit" VALUE="Save" onClick="validateTester()">
此功能将验证您的结果
function validateTester() {
var flag = true
var Tester = document.forms.Tester
if (Tester.line1.value!="JavaScript") {
alert("First box must say 'JavaScript'!")
flag = false
}
if (Tester.line2.value!="Kit") {
alert("Second box must say 'Kit'!")
flag = false
}
if (flag) {
alert("Form is valid! Submitting form...")
document.forms.Tester.submit()
}
}