Controlling the angular bootstrap modal form with ease

I am having trouble accessing the form in the modal controller (Plunkr). The variable myForm doesn't seem to be accessible. How can I make the alert call work correctly:

angular.module('plunker', ['ui.bootstrap']);
var ModalDemoCtrl = function ($scope, $modal, $log) {
  $scope.open = function () {
    var modalInstance = $modal.open({
      templateUrl: 'myModalContent.html',
      controller: ModalInstanceCtrl          
    });       
  };
};

var ModalInstanceCtrl = function ($scope, $modalInstance) {
  $scope.submit = function() {
    // How to access this?
   alert($scope.myForm.$dirty);
  };

  $scope.ok = function () {
    $modalInstance.close();
  };

  $scope.cancel = function () {
    $modalInstance.dismiss('cancel');
  };
};

And here is the template:

<div ng-controller="ModalDemoCtrl">
    <script type="text/ng-template" id="myModalContent.html">
        <div class="modal-header">
            <h3>I'm a modal!</h3>
        </div>
        <div class="modal-body">
          <form name="myForm" novalidate>
          <input type="email" value="hello">
          </form>
        </div>
        <div class="modal-footer">
            <button class="btn btn-primary" ng-click="submit()">OK</button>
            <button class="btn btn-warning" ng-click="cancel()">Cancel</button>
        </div>
    </script>

    <button class="btn" ng-click="open()">Open me!</button>
    <div ng-show="selected">Selection from a modal: {{ selected }}</div>
</div>

Answer №1

Using transclusion in Angular-UI modals allows for modal content to inherit scope, creating new entries in a child scope. This behavior is seen when using the form directive.

To connect a form to the parent scope in Angular 1.2.16, you can do the following:

<form name="$parent.userForm">

The userForm is then accessible in the modal's controller through $scope. With scope inheritance, access to userForm remains intact in the markup.

<div ng-class="{'has-error': userForm.email.$invalid}"}>

Answer №2

There was a previously documented issue in ui-bootstrap regarding the injection of $modalInstance, but it has since been resolved.

A workaround for this issue is to explicitly pass the form instance to the submit function as shown below:

<form name="myForm" novalidate ng-submit="submit(myForm)">
  <div class="modal-header">
    <h3>I'm a modal!</h3>
  </div>
  <div class="modal-body">
    <input type="email" value="hello">
  </div>
  <div class="modal-footer">
    <button class="btn btn-primary" type="submit">OK</button>
    <button class="btn btn-warning" ng-click="cancel()">Cancel</button>
  </div>
</form>
var ModalInstanceCtrl = function ($scope, $modalInstance) {
  $scope.submit = function(myForm) {
   alert(myForm.$dirty);
  };
};

Answer №3

To start, in your controller include:

$scope.formData = {};

In your HTML template:

<form name="formData.yourFormName">

Implement validation on HTML elements:

<div ng-class="{'has-error': formData.yourFormName.email.$invalid}"}>

For more information, check out:

AngularJS modal dialog form object is undefined in controller

Answer №4

Ultimately, I decided to follow gertas' advice for solving the issue at hand. However, there is an alternative method for resolving this situation.

//Define a function within the modal controller scope

        $scope.setFormReference = function (myForm) {
            $scope.myForm = myForm
        };

//Invoke this function using an angular expression in your modal template

       {{ setFormReference(loginForm)}}

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