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AngularJS: Require Multiple for Select2 Validation
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| App.directive 'requiredMultiple', -> | |
| isEmpty = (value) -> | |
| angular.isUndefined(value) || (angular.isArray(value) && value.length == 0) || value == '' || value == null || value != value | |
| require: '?ngModel', | |
| link: (scope, elm, attr, ctrl) -> | |
| return unless ctrl | |
| attr.required = true # force truthy in case we are on non input element | |
| validator = (value) -> | |
| if attr.required && (isEmpty(value) || value == false) | |
| ctrl.$setValidity('required', false) | |
| else | |
| ctrl.$setValidity('required', true) | |
| value | |
| ctrl.$formatters.push(validator) | |
| ctrl.$parsers.unshift(validator) | |
| attr.$observe 'required', -> | |
| validator(ctrl.$viewValue) |
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