I updated AngularJs version from 1.3 to 1.4.
It causes an error as,
Syntax Error: Token '{' invalid key at column 2 of the expression
[{{frmname}}.emailAddress.$error] starting at
[{frmname}}.emailAddress.$error].
It works perfectly in Angular 1.3
<form name="{{frmname}}">
<h1>My form name = {{frmname}}</h1>
<div class="field">
<label for="emailAddress">Enter your email address:</label>
<input type="email" name="emailAddress" ng-model="email" required />
<div ng-messages="{{frmname}}.emailAddress.$error">
<div ng-message="required">
You forgot to enter your email address...
</div>
<div ng-message="email">
You did not enter your email address correctly...
</div>
</div>
</div>
<input type="submit" />
</form>
FIDDLE
If you need to set your form name from a dynamic variable then you could use ng-form to validate your inputs inside the actual form.
Basic html:
<form name="{{formName}}" novalidate>
<ng-form name="emailError">
<div ng-messages="emailError.emailAddress.$error" style="color:maroon" role="alert">
<label for="emailAddress">Enter your email address:</label>
<input type="email" name="emailAddress" ng-model="email" minlength="5" required />
<div ng-messages="emailError.emailAddress.$error" style="color:maroon" role="alert">
<div ng-message="required">You did not enter a field</div>
</div>
</ng-form>
<input type="submit" />
</form>
Plunker: https://plnkr.co/edit/Q0ifmRXKkLfwKGNqv8p4?p=preview
Official documentation of ngForm: https://docs.angularjs.org/api/ng/directive/ngForm
Finally i got the solution,
Add a function for getting ng-messages attribute value.
<div ng-messages="getMessages('emailAddress')">
<div ng-message="required">
You forgot to enter your email address...
</div>
<div ng-message="email">
You did not enter your email address correctly...
</div>
</div>
Declare the function inside your controller or directive.
$scope.getMessages = function (el) {
return $scope.$eval($scope.frmname)[el].$error;
}
FIDDLE
Related
In angular js, we have $submitted to populate error messages on submit click.
How can we display all validation errors on submit click in Angular
HTML:
<form #nameForm="ngForm" novalidate (ngSubmit)="saveNameForm(formModel)">
<div class="form-group">
<label for="inputName" class="form-control-label"> Name</label>
<input type="text" id="inputName" name="lotCode [(ngModel)]="formModel.name" #lotCode="ngModel" aria-describedby="nameHelp"
autocomplete="new-password" required>
<small id="nameHelp" class="text-danger" *ngIf="lotCode.invalid && lotCode.touched">Required</small>
</div>
<div class="form-group">
<label for="inputDescription" class="form-control-label"> Description</label>
<input type="text" id="inputDescription" name="desCode" [(ngModel)]="formModel.description" #desCode="ngModel" aria-describedby="descriptionHelp"
autocomplete="new-password" required>
<small id="descriptionHelp" class="text-danger" *ngIf="desCode.invalid && desCode.touched">Required</small>
</div>
<button type="submit">Submit </button>
</form>
Component:
export class AppComponent {
formModel: FormModel= new FormModel();
saveNameForm(formModel){
console.log(formModel)
}
}
export class FormModel {
name: string;
description:string;
}
https://stackblitz.com/edit/angular-rizsuy?file=src%2Fapp%2Fapp.component.ts
Here is the solution:
https://stackblitz.com/edit/angular-8jaaqz?file=src%2Fapp%2Fapp.component.html
You should use a variable to set submitted
if submitted then will display error
Angular uses the same form validation that native HTML5 does. Just do this in an Angular context. In the following example, we can use *ngIf to control the display of the messages, and .dirty and .touched to determine if the user interacted with the input.
Example from docs:
<input id="name" name="name" class="form-control"
required minlength="4" appForbiddenName="bob"
[(ngModel)]="hero.name" #name="ngModel" >
<div *ngIf="name.invalid && (name.dirty || name.touched)"
class="alert alert-danger">
<div *ngIf="name.errors.required">
Name is required.
</div>
<div *ngIf="name.errors.minlength">
Name must be at least 4 characters long.
</div>
<div *ngIf="name.errors.forbiddenName">
Name cannot be Bob.
</div>
</div>
I am new to web development, and am trying to set up a practice form to learn form validation. I am following Bootstrap's doc for Custom Styles to handle those with accessibility issues that use screen readers, and to standardize the validation appearance to users across different browsers.
I have set up a basic form as well as am trying to create a JavaScript function using jQuery to handle the validation. I feel like I am almost there, but still do not have the validation working as the Bootstrap demo displays.
index.html
<form id="signup-form" novalidate>
<div class="form-group">
<h1>Sign Up</h1>
<p>Use this form to enter your name and email to sign up.</p>
</div>
<!-- Name -->
<div class="form-group">
<div class="row">
<div class="col">
<label for="firstNameInput">Name</label>
<input type="text" class="form-control" id="firstNameInput" placeholder="First name" required>
<div class="valid-feedback">
Looks good!
</div>
</div>
<div class="col">
<label for="lastNameInput">Last</label>
<input type="text" class="form-control" id="lastNameInput" placeholder="Last name" required>
<div class="valid-feedback">
Looks good!
</div>
</div>
</div>
</div>
<!-- Email -->
<div class="form-group">
<label for="emailAddressInput">Email address</label>
<input type="email" class="form-control" id="emailAddressInput" aria-describedby="emailHelp" placeholder="name#example.com" required>
<small id="emailHelp" class="form-text text-muted">We'll never share your email with anyone else.</small>
<div class="invalid-feedback">
Please provide a valid email.
</div>
</div>
<!-- Options -->
<div class="form-group">
<div class="form-check">
<input class="form-check-input" type="radio" name="Radios" id="type1RadioButton" value="option1" checked>
<label class="form-check-label" for="type1RadioButton">
Type 1 user
</label>
</div>
<div class="form-check">
<input class="form-check-input" type="radio" name="Radios" id="type2RadioButton" value="option2">
<label class="form-check-label" for="type2RadioButton">
Type 2 user
</label>
</div>
</div>
<!-- Submit Button -->
<div class="form-group">
Submit
</div>
</form>
script.js
$(document).ready(function() {
$("#submitButton").click(function() {
//Fetch form to apply custom Bootstrap validation
var form = $("#signup-form")
//alert(form.prop('id')) //test to ensure calling form correctly
if (form.checkValidity() === false) {
event.preventDefault()
event.stopPropagation()
}
form.addClass('was-validated')
})
})
The problem is that checkValidity() exists on the first form node, not the form.
Change this: form.checkValidity() === false
to this: form[0].checkValidity() === false
and it works: https://www.codeply.com/go/pUPBLzn6yL
$(document).ready(function() {
$("#submitButton").click(function() {
//Fetch form to apply custom Bootstrap validation
var form = $("#signup-form")
alert(form.prop('id')) //test to ensure calling form correctly
if (form[0].checkValidity() === false) {
event.preventDefault()
event.stopPropagation()
}
form.addClass('was-validated');
//Make ajax call here
})
})
More on Bootstrap 4 Validation:
Can't make the validation work in Bootstrap 4
I would like to know how can i display an error message below the input field using angular js. If the field is empty i want to display "This field is required". Also how to check if the field name starts with alphanumeric values like (\?/%*:|"<.>) i need to display the error "The field name should not start with alphanumeric values" below that input field. // code goes here
<div ng-controller="ModalController">
<form novalidate name="inputForm" class="form-horizontal">
<div class="row">
<div class="col-md-12">
<cp-input name="username" ng-model="user.name"
label="{{'formlabels.reponame' | translate}}" required="true"
error-state="right">
</cp-input>
</div>
</div>
<div style="color:red" ng-show="inputForm.username.$error.required">First name is required</div><br>
</form>
<!-- Show Confirm -->
<button type="button" class="btn btn-primary" data-dismiss="modal"
data-ng-click="submitData()">Add</button>
</div>
It would be a good idea to use ngMessages directive and ngPattern - take a look at the doc link with example
<form name="myForm">
<label>
Enter your name:
<input type="text"
name="myName"
ng-model="name"
ng-minlength="5"
ng-maxlength="20"
ng-pattern="^[^\w+$]"
required />
</label>
<pre>myForm.myName.$error = {{ myForm.myName.$error | json }}</pre>
<div ng-messages="myForm.myName.$error" style="color:maroon" role="alert">
<div ng-message="required">You did not enter a field</div>
<div ng-message="minlength">Your field is too short</div>
<div ng-message="maxlength">Your field is too long</div>
</div>
</form>
ref https://docs.angularjs.org/api/ngMessages/directive/ngMessages
ng-messages will help you..Try this
<input ng-model="typeText" id="Sample" name="Sample" type="text" ng-pattern="^$|^[A-Za-z0-9]+" required/>
or ng-pattern="/^[a-zA-Z\s]*$/"
<div ng-messages="formname.Sample.$error">
<div ng-message="pattern">only characters are allowed</div>
<div ng-message="required">field required</div>
</div>
I am trying to figure out how to use ng-message based off of a button click. Most of the documentation I have found automatically shows the error message based off an input not the button. What would I change so the ng-messages show after the button in clicked. Here is my code
<div ng-controller="userController">
<div class=user>
<form name="login">
<h2 class>Login</h2>
<h3 class = "login_page">UserName</h3>
<input ng-model="user" type="text" ng-minlength="1" required>
<h3 class = "login_page">Password</h3>
<input ng-model="password" type="password" name="password" ng-minlength="4" required>
<input type="submit" value="Login" ng-click="login()" >
<div ng-messages="login.password.$error" style="color:maroon" role="alert">
<div ng-message="required">You did not enter a field</div>
<div ng-message="minlength">Your field is too short</div>
</div>
</form>
</div>
</div>
You can use $submitted flag on the form controller with ngIf:
<div ng-if="login.$submitted" ng-messages="login.password.$error" style="color:maroon" role="alert">
<div ng-message="required">You did not enter a field</div>
<div ng-message="minlength">Your field is too short</div>
</div>
You can use ng-show directive of angular with $submitted property of ng-form
Add this to your code ng-show="login.$submitted"
<input type="submit" value="Login" ng-click="login()" >
<div ng-show="login.$submitted" ng-messages="login.password.$error" style="color:maroon" role="alert">
<div ng-message="required">You did not enter a field</div>
<div ng-message="minlength">Your field is too short</div>
</div>
You can see a working fiddle here . Hope this will help
Or Alternatively add show to each message like this
<div ng-messages="login.password.$error" style="color:maroon" role="alert">
<div ng-show="login.$submitted" ng-message="required">You did not enter a field</div>
<div ng-show="login.$submitted" ng-message="minlength">Your field is too short</div>
</div>
In angularJs FORM SUBMIT how to display all validation messagees in one single div at bottom of the page. Ex:
<div id="err-msg"> <!-- error message will come here --></div>
I referred documents but all are displaying below the text box using
<p ng-show="userForm.email.$invalid && !userForm.email.$pristine" class="alert alert-danger">Enter a valid email.</p>
How to write one area to bind all the messages in to same place (avoid use this userForm.email.$invalid)
Note I tried ng-message but am not clear any one help me. Please refer the below code for normal HMTL jQuery error display like need to take care using the AngularJS
HTML
<div id="main">
<form> <div><input id="email_txt" type="text" name ="email" value="" > </div>
<div><input id="pass_txt" type="password" name ="password" value="" > </div>
<div><input id="validate_btn" type="submit" value="Validate" > </div>
</form>
</div>
<div id="err-msg"> <!-- error message will come here --></div>
jQuery:
$('#main').on('click', '#validate_btn', function() {
if($('#email_txt').val().length == 0){
$('#err-msg').val("Please enter emailid!");
}else if($('#pass_txt').val().length == 0){
$('#err-msg').val("Please enter password!");
}
...
...
else{
alert("Good");
}
});
AngularJS current code :
<form name="userForm" ng-submit="submitForm(userForm.$valid)" novalidate>
<div class="form-group">
<label>Username</label>
<input type="text" name="username" class="form-control" ng-model="user.username" ng-minlength="3" ng-maxlength="8">
<p ng-show="userForm.username.$error.minlength" class="help-block">Username is too short.</p>
<p ng-show="userForm.username.$error.maxlength" class="help-block">Username is too long.</p> </div>
<input type="email" name="email" class="form-control" ng-model="email">
<p ng-show="userForm.email.$invalid && !userForm.email.$pristine" class="help-block">Enter a valid email.</p>
<button type="submit" class="btn btn-primary">Submit</button>
<form>
app.js
.controller('validatectrl',['$scope',function($scope){
$scope.submitForm = function(isValid) {
// check to make sure the form is completely valid
if (isValid) {
alert('Good');
}
};
}]);
How to rewrite?
If a form is invalid, the errors will be stored in the object $scope.form.$error. Please check console of this JSFiddle. From the $error property on the form, you can populate the error messages.
angular.module('Joy', [])
.controller('FormCtrl', ['$scope', function ($scope) {
$scope.user = {};
$scope.submit = function () {
console.log($scope.userInfo);
};
}]);
The HTML:
<div ng-app="Joy" id="play-ground">
<form name="userInfo" novalidate ng-controller="FormCtrl">
<div class="ui input">
<input ng-model="user.email" ng-message="YOU ARE WRONG" name="User Email" type="email">
</div>
<div class="ui input">
<input ng-model="user.name" name="User Name" type="text" required>
</div>
<div class="ui divider"></div>
<button class="ui primary button" ng-click="submit()">Submit</button>
<div class="ui positive message">User: {{ user | json }}</div>
</form>
</div>