How can I get the value of the checked radio button when submitting a form using angularjs? - angularjs

Question

I have a few forms. Each form have a few possible radio buttons and a submit button. Only one radio button can be checked (using the same name attribute for each radio). How can I get the checked radio button's value when the form is submitted, using angularjs? #blesh advised to use the same ng-model for each input, but note that the problem is that the input tags are generated using ng-repeat, and this is where the problem starts. I need, of course, naturally, only one button for a bunch of inputs. It is well described in the following plunker, after playing with #blesh 's Answer: http://plnkr.co/edit/5KTQRGdPv3dbP462vq1a?p=preview In it, you can see that the alert shows the initial value and not the current selected input.

Answer 1

Your radio button's value will be available on whatever scope property you've assigned ng-model="" to on the input element. Try something like this:
JS
app.controller('MyCtrl', function($scope){
$scope.submitForm = function (){
alert($scope.radioValue):
};
$scope.radioValue = 1;
});
HTML
<form name="myForm" ng-controller="MyCtrl" ng-submit="submitForm()">
<label><input type="radio" name="test" ng-model="radioValue" value="1"/> One</label>
<label><input type="radio" name="test" ng-model="radioValue" value="2"/> Two</label>
<label><input type="radio" name="test" ng-model="radioValue" value="3"/> Three</label>
<div>currently selected: {{radioValue}}</div>
<button type="submit">Submit</button>
</form>
And, so you can see it working, here is a plunker demonstrating the example

Answer 2

just add $parent in ng-model .
<form name="myForm" ng-submit="submitForm()">
<label data-ng-repeat="i in [1,2,3]"><input type="radio" name="test" ng-model="$parent.radioValue" value="{{i}}"/>{{i}}</label>
<div>currently selected: {{radioValue}}</div>
<button type="submit">Submit</button>
</form>

Answer 3

Combination with ng-value
app.controller('MyCtrl', function($scope){
$scope.submitForm = function() {
*****
};
$scope.radioBtn = {
name: 'radioButton'
};
$scope.radioValueOne = {"id": "1", "value": "whatever you want"};
$scope.radioValueTwo = {"id": "2", "value": "whatever you want"};
$scope.radioValueThree = {"id": "3", "value": "whatever you want"};
});
<form name="myForm" ng-controller="MyCtrl" ng-submit="submitForm()">
<label><input type="radio" name="test" ng-model="radioBtn.name" ng-value="radioValueOne"/> One</label>
<label><input type="radio" name="test" ng-model="radioBtn.name" ng-value="radioValueTwo"/> Two</label>
<label><input type="radio" name="test" ng-model="radioBtn.name" ng-value="radioValueThree"/> Three</label>
<div>currently selected: {{radioBtn.name}}</div>
<button type="submit">Submit</button>
</form>

Answer 4

I faced this problem and found a really simple and clean solution. Here's what you should do.
In your controller, make an empty object with any name("radioValue" in this case).
In your HTML file, use same 'ng-model' for each radio button/input with same name as that of object joining 'name' attribute of each radio button(that too should be same for each button) separated by a period(.) as shown in code snippet.
The Controller
var radioValue={};
...
...
console.log($scope.radiovalue) //use JSON.strinigify if naccessary
The HTML File
<input type="radio" name="somename" ng-model="radioValue.somename" value="1"/>
<input type="radio" name="somename" ng-model="radioValue.somename" value="2"/>
<input type="radio" name="somename" ng-model="radioValue.somename" value="3"/>
//Don't forget to mention value attribute. ng-model does the work by identifying the radio-buttons/inputs by value attribute
The Output you should expect
{"somename":"1"} //if radio-button with value "1" is selected.