Mandating the inclusion of a directives controller in conjunction with other necessary controllers

Question

Mandating the inclusion of a directives controller in conjunction with other necessary controllers

Two directives are nested within each other, with one requiring the other using require: '^parentTag' . Both directives have their own controllers. In the parent directive, I can access its controller as the fourth argument in

link: function(scope, el, attrs, ctrl)

, but in the child directive, this fourth argument either refers to the required controller or an array of required controllers, making it impossible to access the directive's controller.

I have attempted to access the controller by using the name specified in controllerAs 'vm' and also by using the string name for the controller, but neither method successfully retrieves the controller into the fourth argument.

Although the controller is accessible through scope.vm, I would prefer to access it via the fourth argument if feasible.

This Plunkr example demonstrates that the ChildController does not appear in the fourth argument, only on the scope, whereas the ParentController is accessible as the fourth argument.

http://plnkr.co/edit/2WmB6Bqgc8MEG9JWz4wt

javascript angularjs angularjs-directive

Answer 1

Answer №1

One way to implement the same directive is by referencing it directly through its name, although this approach is not commonly seen:

function CustomDirective() {
  return {
    restrict: 'AE',
    require: ['^parentDirective', 'customDirective'],
    scope: {},
    template: '<div class="custom-directive">Custom</div>',
    link: customLink,
    controller: CustomController,
    controllerAs: 'vm',
    bindToController: true
  }

  function customLink(scope, element, attrs, ctrls, transclude) {
      // ctrls[1] represents the instance of CustomController
      console.log('Custom vm not found in ctrls', ctrls);
      console.log('Custom vm found on scope', scope.vm);
  }
}

Answer 2

One way to implement the same directive is by referencing it directly through its name, although this approach is not commonly seen:

function CustomDirective() {
  return {
    restrict: 'AE',
    require: ['^parentDirective', 'customDirective'],
    scope: {},
    template: '<div class="custom-directive">Custom</div>',
    link: customLink,
    controller: CustomController,
    controllerAs: 'vm',
    bindToController: true
  }

  function customLink(scope, element, attrs, ctrls, transclude) {
      // ctrls[1] represents the instance of CustomController
      console.log('Custom vm not found in ctrls', ctrls);
      console.log('Custom vm found on scope', scope.vm);
  }
}

Mandating the inclusion of a directives controller in conjunction with other necessary controllers

Answer №1

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