Change checkbox value for checked and unchecked in AngularJS

Question

I have a checkbox and I'd like to change the value if the checkbox is checked or not.

For the moment, my checkbox model value is equal to 'true' if checked and 'false' if unchecked.

My checkbox

<input type="checkbox" ng-model="toStringObj" />

What I tried

<input type="checkbox" ng-true-value="anyModel" ng-false-value="''" ng-model="toStringObj" />

I works if I put a string in ng-true-value directive, but not with a model, I need to pass a model from my scope

Adam Nierzad · Accepted Answer · 2017-05-18 14:01:01Z

1

Unfortunately ngTrueValue and ngFalseValue only accept constant expressions so it's not possible for them to be set dynamically from a value on your controllers scope.

Some attributes used in conjunction with ngModel (such as ngTrueValue or ngFalseValue) will only accept constant expressions.

https://docs.angularjs.org/error/ngModel/constexpr

answered May 18, 2017 at 14:01

Adam Nierzad

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