How to manually trigger a form's submit in AngularJS?

Try creating a directive that catches an event:

var app = angular.module('myApp', []);

function MyCtrl($scope) {
    $scope.triggerSubmit = function() {
        $scope.$broadcast('myEvent');
        console.log('broad');
    };
    
    $scope.onSubmitted = function() {
        alert('submitted!');
    };
}


app.directive('submitOn', function() {
    return {
        link: function(scope, elm, attrs) {
            scope.$on(attrs.submitOn, function() {
                //We can't trigger submit immediately, or we get $digest already in progress error :-[ (because ng-submit does an $apply of its own)
                setTimeout(function() {
                    elm.trigger('submit');
                });
            });
        }
    };
});

<link href="http://twitter.github.com/bootstrap/assets/css/bootstrap.css" rel="stylesheet"/>
<script src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
<script src="http://code.angularjs.org/1.0.0/angular-1.0.0.js"></script>
<div ng-controller="MyCtrl">
    <form submit-on="myEvent" ng-submit="onSubmitted()">
        Form...
    </form>
    <hr />
    <a class="btn" ng-click="triggerSubmit()">Submit</a>
</div>

Original source:

http://jsfiddle.net/unWF3/

I've answered a similar question here AngularJS - How to trigger submit in a nested form

Basically, you can trigger validation by firing $validate event

isFormValid = function($scope, ngForm) {
    $scope.$broadcast('$validate');
    if(! ngForm.$invalid) {
      return true;
}

For working code example & a small utility method which is helpful in showing validation messages, see answer in the above link.

You can have nested forms with ng-form directive. It will be like:

<form name="accountForm">
  <div data-ng-form="detailsForm">
    <input required name="name" data-ng-model="name">
  </div>
  <div data-ng-form="contactsForm">
    <input required name="address" data-ng-model="address">
  </div>
  <button type="submit">Save</button>
</form>

That way when submit will be triggered for the accountForm it will validate nested ng-forms also.

There's an easier way to do that, You can give a name for each form that you have in your app, then you'll be able to send the entire angular object of the form that you want to trigger or do whatever you want with it. Example:

<div ng-conroller="ContactController">

    <form name="myFirstForm" ng-submit="saveHeaderAndDetail()">
        <label for="Description">Description</label>
        <input type="text" ng-model="Description" required/> 

        <input type="text" style="visibility:hidden" />
    </form>

    <form name="mySecondForm" ng-submit="addToDetail()">
    ... 
    </form>

    <input type="button" 
        ng-click="saveHeaderAndDetail(myFirstForm)"/>

</div>

Then in your function

saveHeaderAndDetail (myFirstForm) {
myFirstForm.$submitted = true
...
}

We can always submit a form directly using the submit () function from javascript.

document.getElementById("myform").submit()

In this way, we can validate the form using angularjs first and if the form is valid then submit it using the submit method.