Form is not accessible inside controller - angularjs

Question

I have this ionic page:
<ion-view view-title="Sign up for business">
<ion-nav-bar class="bar-positive">
<ion-nav-back-button></ion-nav-back-button>
<ion-nav-buttons side="right">
<button class="button button-icon icon ion-android-done" ng-disabled="bizzSForm.$invalid" ng-click="submitBizzForm()"></button>
</ion-nav-buttons>
</ion-nav-bar>
<ion-content>
<form name="bizzSForm" class="css-form" ng-submit="submitSignUpForm()" novalidate>
<div class="list">
<label class="item item-input">
<i class="icon ion-person placeholder-icon"></i>
<input type="text" placeholder="Your business or organization name" name="name" ng-model="bizzFormData.name" ng-minlength="3" ng-maxlength="50" required>
</label>
<div ng-show="bizzSForm.$submitted || bizzSForm.name.$touched">
<span ng-show="bizzSForm.name.$error.required" class="form-err-blk"><i class="ion-close-round"></i> Tell us your business or organization name.</span>
</div>
I have this controller code:
$scope.submitBizzForm = function() {
if($scope.bizzSForm.$valid) {
$scope.submitSignUpForm();
}
}
here $scope.bizzSForm is showing undefined

Answer 1

You can pass the bizzSForm in the ngSubmit callback, and use it as it is:
HTML
<form name="bizzSForm" class="css-form" ng-submit="submitSignUpForm(bizzSForm)" novalidate>
<!-- content -->
</form>
Javascript
$scope.submitBizzForm = function(form) {
if(form.$valid) {
$scope.submitSignUpForm();
}
};

Answer 2

You need to pass form name as a parameter to the function you want ngSubmit to handle.
<form name="bizzSForm" class="css-form" ng-submit="submitSignUpForm(bizzSForm)" novalidate>
You see that, form should have a name, name="bizzSForm" and pass into function, ng-submit="submitSignUpForm(bizzSForm)"
then inside controller, you just need to call it,
$scope.submitSignUpForm = function(bizzSForm) {
if(bizzSForm.$valid) {
// do something here
console.log('Form is valid');
}
}