I currently have a form with many different inputs. In the example below I have created a form with two inputs for simplicity. I am trying to make it so my submit button is disabled when the form isn't valid - that is, when all the required inputs have not been filled out.
This is what I have tried so far:
angular.module('myApp', []);
angular.element(document).ready(function () {
angular.bootstrap(document, ['myApp']);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.8/angular.min.js"></script>
<form name="myForm">
<input type="text" placeholder="name" required/>
<input type="number" placeholder="age" required />
<input type="submit" ng-disabled="myForm.$invalid" />
{{ myForm.$invalid }} <!-- prints "false" -->
</form>
As you can see from the above snippet, myForm.$invalid is false even though I haven't filled out the required inputs yet. Is there some different property which will tell me if the required inputs have all been filled out?
I have looked at different posts such as this one but when I try and use myForm.$valid it just gives me the negated version of myForm.$invalid, which doesn't help much either.
You are missing ng-model in the form fields. You need to add ng-model as it detects the changes in the form fields.
Try this:
angular.module('myApp', []);
angular.element(document).ready(function () {
angular.bootstrap(document, ['myApp']);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.8/angular.min.js"></script>
<form name="myForm">
<input type="text" ng-model="name" placeholder="name" required/>
<input type="number" ng-model="age" placeholder="age" required />
<input type="submit" ng-disabled="myForm.$invalid" />
{{ myForm.$invalid }} <!-- prints "false" -->
</form>
Related
How to check all fields in the submit form ng-submit="submit(field)" is empty in controller.js? They consists of few textboxes and one select field.
I would want an alert box to occur if all fields are empty and select option is not selected, instead of individual validation.
Thanks
While it's not exactly what you're asking about, may be $pristine is what you want? It's a flag on the form indicating whether the form has ever been edited. If someone typed and then cleared out a field, $pristine would still be false, however.
<form name="myform" ng-submit="doSubmit()" ng-controller="FormController">
<input ng-model="firstName" name="firstName" />
</form>
Then in your controller
.controller('FormController', function($scope){
$scope.doSubmit = function(){
if($scope.myform.$pristine){}
}
})
Alternatively, you can set all your fields to required="true" and use the $valid flag on the form in the same way as described above.
You can use this:
ng-show="!yourfield.length"
Something like this:
<form name="yourform">
<input name="yourfield" ng-model="somefield" ng-minlength="10" required>
<span ng-show="!yourfield.myfield.$error.required">Something</span>
</form>
You should look for Form Validation . Take a look at this tutorial.
<input name="name" class="form-control"
ng-model="user.name" placeholder="Name" required>
<div class="alert alert-danger"
ng-show="userForm.name.$error.required">
Please enter the name.
</div>
The following will show an alert if all fields are empty
angular.module('app', [])
.controller('FormController', function($scope) {
$scope.doSubmit = function(){
if (formIsEmpty($scope.myform)){
alert('You forgot to enter something before submitting');
}
};
function formIsEmpty(form) {
for (var prop in form) {
if (!form.hasOwnProperty(prop)) { continue; }
if (prop[0] === '$') { continue; }
if ($scope[prop]) { return false; }
}
return true;
}
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app">
<form name="myform" ng-submit="doSubmit()" ng-controller="FormController">
<input ng-model="firstName" name="firstName" />
<input ng-model="lastName" name="lastName" />
<textarea ng-model="description" name="description"></textarea>
<button type="submit">Submit</button>
</form>
</div>
I have a form like :
<form name="myform">
<input type="text" name="input" />
</form>
But my input is not available in $scope.myform.input and neither by {{ myform.input }}. I tried to add a ng-minlength:
<form name="myform" novalidate>
<input type="text" name="input" ng-minlength="10" />
</form>
And even by typing something shorter than 10, myform is still valid. It's like the input is not part of the form at all.
Here is an example hosted on jsfiddle: http://jsfiddle.net/saag0agc/
AngularJS Documentation on input text: https://docs.angularjs.org/api/ng/input/input%5Btext%5D
You need an ng-model attribute. For example:
<form name="myform">
<input type="text" name="input" ng-model="input" />
</form>
Then you can access the content via:
{{ input }}
Although I would suggest using a name/model other than input.
The ng-model property is missing on the input.
<form name="myform">
<input type="text" name="input" ng-model="myform.input" />
</form>
I have a form which inputs name of a country and then it overwrites a global variable. Submit button does nothing when clicked. Where am I missing?
Here is the HTML
<div ng-controller="InputController">
<form class="form-wrapper cf" role="form">
<input type="text" ng-model="model.country" placeholder="Search country..." required>
<button type="submit" ng-click="update()">Search</button>
<span>{{model.country}} ======</span>
</form>
</div>
And here is the controller.
LastFmApp.controller('InputController',
function InputController($scope) {
$scope.model = {};
$scope.update = function() {
console.log($scope.model.country);
};
});
I don't think it is an issue with angular js.
The submit button will reload the page so you won't be able to see changes in your model.
You can either use an input type button with ngClick:
<input type="button" ng-click="update()">Search</input >
Or an input type submit with ngSubmit attribute on your form:
<form ng-submit="update()">
<input type="submit">Search</input>
</form>
i dont think there is any issue with your code see your code is working in plunker
<div ng-controller="InputController">
<form class="form-wrapper cf" role="form">
<input type="text" ng-model="model.country" placeholder="Search country..." required>
<button type="submit" ng-click="update()">Search</button>
<span>{{model.country}} ======</span>
</form>
</div>
http://plnkr.co/edit/u9hqu1bASxxMgtEP1qAr?p=preview
I'm trying to determine if a form is valid or not using angular.
I have a form like this:
<form name="form" novalidate>
<p>
<label>Number: </label>
<input type="number" min="0" max="10" ng-model="test.number" required />
</p>
<p>
<label>Name: </label>
<input type="text" ng-model="test.name" required />
</p>
<button ng-click="sendTest(test)">Submit</button>
</form>
And, on the sendTest function I did:
angular.module('demo', [
]).controller('MainCtrl', function($scope){
$scope.test = {
name: 'das'
};
$scope.sendTest = function(test) {
console.log(form.$valid);
console.log(test.$valid);
}
});
The problem is that both form.$valid and test.$valid are undefined. I tried to do this following these examples:
http://dailyjs.com/2013/06/06/angularjs-7/
http://www.youtube.com/watch?v=J82OD76QhPo
Here's the complete code for this demo:
http://plnkr.co/edit/l0E62KPJu4Z2r15VNjJq
form gets added to the scope, try: console.log($scope.form.$valid)
BTW, it's called form because that's the value you have specified on the form tag's name attribute. You can also add name attributes to the input fields if you from your controller want to know the state of the specific fields.
Example: http://plnkr.co/edit/Ra98yIFYso94flDIqNCD?p=preview
Given a simple html form like this:
<form name="myForm" action="#sent" method="post" ng-app>
<input name="userPreference1" type="text" ng-model="shipment.userPreference" />
<input name="userPreference1" type="text" ng-model="shipment.userPreference" />
<input name="userPreference1" type="text" ng-model="shipment.userPreference" />
... submit input and all the other code...
</form>
I need your help to know how to check on validation time, if at least one of the inputs is empty. The desired validation is the following. The user must complete at least one a preference.
Using jQuery this:
if ( $("input").val() == "" ) {
Works ok, but would like to figure out how to do the same thing using angular.
Thanks so much in advance,
Guillermo
So the idea is to disable the submit button if all inputs are blank. You can do like this
<form name="myForm" action="#sent" method="post" ng-app>
<input name="userPreference1" type="text" ng-model="shipment.userPreference1" />
<input name="userPreference1" type="text" ng-model="shipment.userPreference2" />
<input name="userPreference1" type="text" ng-model="shipment.userPreference3" />
<button type="submit" ng-disabled="!(!!shipment.userPreference1 || !!shipment.userPreference2 || !!shipment.userPreference3)">Submit</button>
</form>
!!str is to force to convert str to a boolean value. And both !!null and !!"" are evaluated to be false.
Demo
You can set the "required" in the input elements and style / code how you want to handle with $valid of a form. Check out http://dailyjs.com/2013/06/06/angularjs-7/
My solution was the following:
$scope.requiredInputsGroup = function () {
var isRequired = true;
if (!$scope.shipment) {
return true;
}
angular.forEach(["userPreference1", "userPreference2", "userPreference3"], function (input) {
if ($scope.shipment[input]) {
isRequired = false;
return false;
}
});
return isRequired;
};
You apply that method to a data-ng-required in each of the inputs...
<form name="myForm" action="#sent" method="post" ng-app>
<input name="userPreference1" type="text" ng-model="shipment.userPreference1" ng-required="requiredInputsGroup()" />
<input name="userPreference2" type="text" ng-model="shipment.userPreference2" ng-required="requiredInputsGroup()" />
<input name="userPreference3" type="text" ng-model="shipment.userPreference3" ng-required="requiredInputsGroup()" />
<button type="submit" ng-disabled="myForm.$invalid">Submit</button>
</form>
And the last bit I applied was to make the button disabled with a simple myForm.$invalid