AngularJs .$setPristine to reset form - angularjs

Question

I been struggling to reset form once form is submitted. Someone posted this Here which I want to make it work but no success. Here is my My Code Example.
$scope.form.$setPristine(); is not setting Pristine: {{user_form.$pristine}} to true. See example above.

Answer 1

$setPristine() was introduced in the 1.1.x branch of angularjs. You need to use that version rather than 1.0.7 in order for it to work.
See http://plnkr.co/edit/815Bml?p=preview

Answer 2

Had a similar problem, where I had to set the form back to pristine, but also to untouched, since $invalid and $error were both used to show error messages. Only using setPristine() was not enough to clear the error messages.
I solved it by using setPristine() and setUntouched().
(See Angular's documentation: https://docs.angularjs.org/api/ng/type/ngModel.NgModelController)
So, in my controller, I used:
$scope.form.setPristine();
$scope.form.setUntouched();
These two functions reset the complete form to $pristine and back to $untouched, so that all error messages were cleared.

Answer 3

Just for those who want to get $setPristine without having to upgrade to v1.1.x, here is the function I used to simulate the $setPristine function. I was reluctant to use the v1.1.5 because one of the AngularUI components I used is no compatible.
var setPristine = function(form) {
if (form.$setPristine) {//only supported from v1.1.x
form.$setPristine();
} else {
/*
*Underscore looping form properties, you can use for loop too like:
*for(var i in form){
* var input = form[i]; ...
*/
_.each(form, function (input) {
if (input.$dirty) {
input.$dirty = false;
}
});
}
};
Note that it ONLY makes $dirty fields clean and help changing the 'show error' condition like $scope.myForm.myField.$dirty && $scope.myForm.myField.$invalid.
Other parts of the form object (like the css classes) still need to consider, but this solve my problem: hide error messages.

Answer 4

There is another way to pristine form that is by sending form into the controller. For example:-
In view:-
<form name="myForm" ng-submit="addUser(myForm)" novalidate>
<input type="text" ng-mode="user.name"/>
<span style="color:red" ng-show="myForm.name.$dirty && myForm.name.$invalid">
<span ng-show="myForm.name.$error.required">Name is required.</span>
</span>
<button ng-disabled="myForm.$invalid">Add User</button>
</form>
In Controller:-
$scope.addUser = function(myForm) {
myForm.$setPristine();
};

Answer 5

DavidLn's answer has worked well for me in the past. But it doesn't capture all of setPristine's functionality, which tripped me up this time. Here is a fuller shim:
var form_set_pristine = function(form){
// 2013-12-20 DF TODO: remove this function on Angular 1.1.x+ upgrade
// function is included natively
if(form.$setPristine){
form.$setPristine();
} else {
form.$pristine = true;
form.$dirty = false;
angular.forEach(form, function (input, key) {
if (input.$pristine)
input.$pristine = true;
if (input.$dirty) {
input.$dirty = false;
}
});
}
};

Answer 6

I solved the same problem of having to reset a form at its pristine state in Angular version 1.0.7 (no $setPristine method)
In my use case, the form, after being filled and submitted must disappear until it is again necessary for filling another record. So I made the show/hide effect by using ng-switch instead of ng-show. As I suspected, with ng-switch, the form DOM sub-tree is completely removed and later recreated. So the pristine state is automatically restored.
I like it because it is simple and clean but it may not be a fit for anybody's use case.
it may also imply some performance issues for big forms (?) In my situation I did not face this problem yet.