Angularjs model value is undefined in form
I have two forms (on one page). The first form has two buttons NEXT and BACK. On clicking next, I will display the next form on the page. I am using ng-if for this condition.
<form name="otpform" novalidate ng-if="renderotpform">
<fieldset ng-disabled="otpdisable">
<div class="middle-container steps fourth-step overflow-hidden" id="divotp">
<input class="" type="text" name="otp" placeholder="{{ 'OTP' | translate }}" ng-model="otp" required >
<input type="button" value="{{ 'BACK' | translate }}" class="brown-button" ng-click="gotoAck()">
<input type="submit" value="{{ 'NEXT' | translate }}" class="blue-button" ng-click="checkotp()">
</div>
</fieldset>
</form>
Below is the js code.
$scope.checkotp = function () {
debugger;
var otpvalue;
$scope.otp = {};
otpvalue = $scope.otp; //undefined
}
When I try to access the otp model, I get an undefined property. In the previous form, I have the following button. Inside the next button I have $scope.renderotpform = true;
to show the above shown form. May I know why I can't access the OTP in the above code?
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ng-if
creates its own area. This way, the otp internally is ng-if
not bound directly to the controller. You can either bind the model to an object or use a controller as syntax . Syntax as implicitly fulfills the dot rule.
For more information :
- https://github.com/angular/angular.js/wiki/Understanding-Scopes
- AngularJs "controller as" syntax - clarification?
var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
var vm=this;
vm.renderotpform = true;
vm.checkotp = function() {
console.log(vm.otp);
}
});
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl as vm">
<form name="otpform" novalidate ng-if="vm.renderotpform">
<fieldset ng-disabled="otpdisable">
<div class="middle-container steps fourth-step overflow-hidden" id="divotp">
<input class="" type="text" name="otp" ng-model="vm.otp" required>
<input type="button" value="BACK" class="brown-button" ng-click="vm.gotoAck()">
<input type="submit" value="NEXT" class="blue-button" ng-click="vm.checkotp()">
</div>
</fieldset>
</form>
</div>
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Make all ng form models from one object. ...
This will work, and there are other advantages to it, how you could easily reset and post data with just one object.: -
var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
$scope.formData = {};
$scope.renderotpform = true;
$scope.checkotp = function() {
console.log($scope.formData.otp);
}
});
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<form name="otpform" novalidate ng-if="renderotpform">
<fieldset ng-disabled="otpdisable">
<div class="middle-container steps fourth-step overflow-hidden" id="divotp">
<input class="" type="text" name="otp" ng-model="formData.otp" required>
<input type="button" value="BACK" class="brown-button" ng-click="gotoAck()">
<input type="submit" value="NEXT" class="blue-button" ng-click="checkotp()">
</div>
</fieldset>
</form>
</div>
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