Exploring the Angular framework: Combining form requirements and controllers in directives' link functions

In my coding journey, I have developed a powerful directive known as formNavHandler. This directive plays a crucial role in handling dirty checking and smooth navigation between different pages. The functionality of formNavHandler heavily relies on the expertise of a talented controller named CoolFormCtrl, as well as a carefully crafted form referred to as coolForm. My ultimate goal is to seamlessly pass both CoolFormCtrl and coolForm to the link function within the domain of formNavHandler.

angular.module('cool').directive('formNavHandler', [
  '$log', function($log) {
    return {
      restrict: 'A',
      scope: {
        disabled: '=coolFormDisabled'
      },
      controller: 'CoolFormCtrl',
      require: 'form',
      link: function(scope, elem, attrs, WhatsThis) {
        $log.log(WhatsThis);
        ...
      }
    };
  }
]);

This technical masterpiece can be invoked in the following manner:

<form name="coolForm" form-nav-handler=true cool-form disabled="!CurrentUser.canUpdate">
  ...
</form>

Despite its brilliance, one challenge looms over me like a dark cloud - the dilemma of passing both form and CoolFormCtrl through the elusive link function.

The impact of certain alterations becomes evident when experimenting with the code:

If I dare to disable the require:'form' line, WhatsThis = CoolFormCtrl:

Whereas, with the require:'form' line reinstated, WhatsThis = coolForm

Lastly, any attempt to introduce a fifth parameter results in WhatsThis = coolForm and AndThis = undefined

controller: 'CoolFormCtrl',
require: 'form',
link: function(scope, elem, attrs, WhatsThis, AndThis) {
  $log.log(WhatsThis);
  $log.log(AndThis);

Is there a clever workaround to successfully convey both a controller and the essential form to a directives link function? Only time will tell.

Answer №1

Give this a shot:

angular.module('awesome').directive('formNavigation', [
   '$log', function($log) {
       return {
          restrict: 'A',
          scope: {
             disabled: '=awesomeFormDisabled'
          },
          require: ['formNavigation', 'form'],
          controller: 'AwesomeFormController',
          link: function(scope, elem, attrs, controllersArray) {
             $log.log(controllersArray);
             ...
          }
    };
 }]);

The variable "controllersArray" will hold an array of controllers.

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