I have recently started working with AngularJS and I am trying to create a selection using radio buttons that will save as a boolean value. However, when I use ng-value, the value saved in the database is null. Here is the HTML code:
<label><input type="radio" ng-model="information" ng-value="TRUE" name="maklumat">Yes</label><br />
<label><input type="radio" ng-model="information" ng-value="FALSE" name="maklumat">False</label>
The problem lies in the entries you provided for the ng-value attribute, simply convert them to lowercase as demonstrated below.
<label>
<input type="radio" ng-model="information" ng-value="true" name="maklumat">Yes
</label>
<br />
<label>
<input type="radio" ng-model="information" ng-value="false" name="maklumat">False
</label>
UPDATE 1
The reason it is being saved as null is because it's attempting to use the value FALSE which is undefined.
ng-value requires a specific AngularJS expression to assign to ngModel when the radio button is chosen.
It's important to note that expressions are case-sensitive. For example, using ng-value="true" will set the value of ng-model to true, while using ng-value="TRUE" will attempt to access $scope.TRUE which doesn't exist and hence sets ng-model to null.
See this example:
angular.module('radioExample', [])
.controller('ExampleController', ['$scope', function($scope) {
$scope.TRUE = "something totally different"
$scope.specialValue = {
"id": "12345",
"value": "green"
};
}]);<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8>
<title>Example - example-radio-input-directive-production</title>
<script src="//code.angularjs.org/snapshot/angular.min.js></script>
</head>
<body ng-app="radioExample">
<form name="myForm" ng-controller="ExampleController">
<label>
<input type="radio" ng-model="color.name" ng-value="specialValue">
SpecialValue
</label><br/>
<label>
<input type="radio" ng-model="color.name" ng-value="true">
true
</label><br/>
<label>
<input type="radio" ng-model="color.name" ng-value="TRUE">
TRUE
</label><br/><br/>
<tt>color = {{color.name | json}}</tt><br/>
</form>
<br><br/><br/> Please note that `ng-value="specialValue"` assigns the value of `$scope.specialValue` to the radio item.
</body>
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