javascript - how can I access $formatters.push function validity in parent controller -

i have directive called players use decide how many players @ position on team. have 4 of these, 1 goal keeper, defence, mid-field , forward, might (the + , - increment , decrement buttons):

- forwards: 2 + - mid-field: 4 + - defence: 4 + - goal keeper: 1 + 

i validate increment make sure doesn't go on 11, how can access maxplayers validity in class?

require: = '^ngmodel';     restrict: string = 'a';      link: ng.idirectivelinkfn = (scope: any,         element: ng.iaugmentedjquery,         attributes: any,         ngmodel: ng.ingmodelcontroller) => {          scope.gettotalplayers = (): number => {             return this.playerstateservice.gettotalplayers();         };          function customvalidation(modelvalue: number) {             var totalplayers: number = scope.gettotalplayers();              if (totalplayers > 11) {                 ngmodel.$render = () => {                     ngmodel.$setvalidity('maxplayers', false);                 };             } else {                 ngmodel.$setvalidity('maxplayers', true);             }             return modelvalue;         }         ngmodel.$parsers.push(customvalidation); 

what want achieve? more specifically, why function number of players checking in outside of directive?

i see 2 ways.

• getting controller function. in controller write $scope.myform.mymodelcontroller.$parsers[0].
• create controller or service number of players check function. transfer function directive. is, make logic verification of directive.

examples:

first way.

function examplecontroller($scope){    var validityfunc = $scope.myform.mymodelcontroller.$parsers[0]; } 

second way.

in controller:

function examplecontroller($scope){    $scope.validityfunc = function(){ return totalplayers>11;}; } 

in directive:

function customvalidation(modelvalue: number) {         ngmodel.$setvalidity('maxplayers', !scope.validityfunc());.         return modelvalue;     } ngmodel.$parsers.push(customvalidation);