CODEWITHSUNDEEP
angularjsangularjs-directiveangularjs-scopeangularjs-forms
Oleg Belousov
Oleg Belousov

Reputation: 10121

Using $setValidity on an element outside of the current scope

I have a global directive, that is in charge of getting the error message from the controller, compiling, and displaying it.

In case there is a server validation error such as This email already exists, I would like to focus on this element, and set it validity to false, e.g. $setValidity(false).

This directive is not the form, and it doesn't contain the form.

What would you suggest (already tried everything which is commented out)

directive('messageCompile', function ( $compile, $window, $rootScope ) {
  return {
    restrict: 'A',
    scope: true,
    link: function ( scope, element, attrs ) {
      var el;

      attrs.$observe( 'template', function ( tpl ) {
        if ( angular.isDefined( tpl ) ) {
          // compile the provided template against the current scope
          el = $compile( tpl )( scope );
          // stupid way of emptying the element
          element.html("");

          // add the template content
          element.append( el );
        }
      });
      attrs.$observe('focus', function(val){
        if ( angular.isDefined( val )  && Boolean(val)) {
          var el = angular.element('[name="' + attrs.focus + '"]');
          var form = el.parents().find('form');
          var formName = form.attr('name');
           el.focus();
          // scope[formName].$setValidity(val, false);       
          // el.scope().$setValidity(false);
          // scope[formName][val].$setValidity(false);
          //$rootScope.scope[formName][val].$setValidity(false);
          //$rootScope.scope[formName].$setValidity(val, false);
        }
      });
        var windowEl = angular.element($window);
        windowEl.on('scroll', function() {
          if(window.scrollY > 46){
            element.parent().parent().addClass('stayTop');

            // alert('here');
          }  
          else{
            // alert('here2');
            element.parent().parent().removeClass('stayTop');
          }
        });

    },
  }
}).

Upvotes: 2

Views: 4600

Answers (2)

Oleg Belousov
Oleg Belousov

Reputation: 10121

Well, I've managed to solve this in a way that gives a sufficient result:

attrs.$observe('focus', function(val){
    if (angular.isDefined(val)  && Boolean(val)) {
        var el = angular.element('[name="' + attrs.focus + '"]');
        var form = el.parents().find('form');
        var formName = form.attr('name');
        el.focus();
        el.removeClass('ng-valid').addClass('ng-invalid');
        el.bind('keyup', function(){
            el.removeClass('ng-invalid');
            el.unbind('keyup');
        });
    }
});

Of course the keyup event can be replaced by a change event, or any other event.

Upvotes: 0

Nikos Paraskevopoulos
Nikos Paraskevopoulos

Reputation: 40298

In order to use $scope[formName] the controller must be on the form element. Either by defining directly:

<form name="theForm" ng-controller="TheCtrl">

Or as a directive:

directive("myDirective", function() {
    return {
        template: "<form name='theForm'>...</form>",
        controller: ["$scope", function($scope) {
            ...
        }],
        ...
    };
});

If one these conditions is met, then you have to define the name attribute for every element that you need to access:

<form name="theForm" ...>
    <input name="theInput" ...>

Then you can access $setValidity(), inside the corresponding controller, as defined above:

$scope.theForm.theInput.$setValidity(false);

AGAIN REMEMBER: In order for a controller to access the form, it must be at the same element as the form, or maybe at a child scope.

Upvotes: 4

Related Questions