controller connect to directive for validation

Question

Hi I was wondering how I can combine both a directive and controller function for validating a form?

Right now I\'m validating a form separately with a directive, which

Answer 1

Though this does not directly answer your question, it is an alternative approach that might benefit you. First create a service to hold your validations.

myApp.factory('ValidationService', [ '$log',
function($log) {

var validators = {
    passcode: {
        patterns: [
            {
                regex: /^[0-9]{8}$/,
                msg: "Please enter a valid 8 digit code."
            }
        ]   
    },
    password: {
        patterns: [
            {
                regex: /^.{8}.*$/,
                msg: "Please use at least 8 characters."
            },
            {
                regex: /((?=.*[a-z].*)(?=.*[A-Z].*)(?=.*[0-9].*))|((?=.*[a-z].*)(?=.*[A-Z].*)(?=.*[^a-zA-Z0-9].*))|((?=.*[A-Z].*)(?=.*[0-9].*)(?=.*[^a-zA-Z0-9].*))|((?=.*[a-z].*)(?=.*[0-9].*)(?=.*[^a-zA-Z0-9].*))/,
                msg: "Please use characters from 3 different categories."
            }
        ]
    },
    email: {
        patterns: [
            {
                regex: /^[^@]+@[^.]+[.][^.][^.]+.*$/,
                msg: "Please enter a valid email address."
            }
        ]
    },
    default: {
        patterns: [
            {
                regex: /^.*$/,
                msg: "Invalid validator specified. Check your html."
            }
        ]
    }
};

return {
    getValidator: getValidator
};

function getValidator(inputType) {
    if (validators[inputType]) {
        return validators[inputType];
    }
    return validators.default;
}

}]);

Then, a directive to work with this service:

myApp.directive('inputValidator', [ '$log', 'ValidationService',
function($log, ValidationService) {
return {
    require: 'ngModel',
    link: function(scope, elem, attrs, ctrl) {

        ctrl.$parsers.unshift(function(viewValue) {
            if (typeof viewValue == 'undefined') {
                return viewValue;
            }
            var pass = true;
            var validator = ValidationService.getValidator(attrs.inputValidator);
            $.each(validator.patterns, function(index, pattern) {
                if (!pattern.regex.test(viewValue)) {
                    pass = false;
                    scope[attrs.inputValidatorMsg] = pattern.msg;
                    return false;
                }
            });

            if (pass) {
                // valid
                ctrl.$setValidity('inputValidator', true);
                return viewValue;
            } else {
                // invalid
                ctrl.$setValidity('inputValidator', false);
                return undefined;
            }
        });
    }
};
}]);

And finally, some html to tie it all together:

<form name="loginForm" class="css-form" data-novalidate>
            <p class="reset-header">Activate Your Account</p>

            <input type=text placeholder="Email Address" name="username" data-ng-model="username"
                    data-input-validator="email" data-input-validator-msg="usernameError" data-required>
            <span class="tag tag-alert arrow-top" data-ng-show="loginForm.username.$error.inputValidator">{{usernameError}}</span>

            <input type=text placeholder="Activation Code" name="passcode" data-ng-model="passcode"
                    data-input-validator="passcode" data-input-validator-msg="passcodeError" data-required>
            <span class="tag tag-alert arrow-top" data-ng-show="loginForm.passcode.$error.inputValidator">{{passcodeError}}</span>

            <input type=password placeholder="New Password" name="password" data-ng-model="password"
                    data-input-validator="password" data-input-validator-msg="passwordError" data-input-must-not-match="username" data-required>
            <span class="tag tag-alert arrow-top" data-ng-show="loginForm.password.$error.inputValidator">{{passwordError}}</span>
            <span class="tag tag-alert arrow-top" data-ng-show="!loginForm.password.$error.inputValidator && loginForm.password.$error.inputMustNotMatch">Please enter a password that is not your email address.</span>

            <input type=password placeholder="New Password Again" name="passwordConfirm" data-ng-model="passwordConfirm"
                    data-input-must-match="password" data-required>
            <span class="tag tag-alert arrow-top" data-ng-show="loginForm.passwordConfirm.$error.inputMustMatch">Please enter the same new password again.</span>

            <button class="btn btn-special" data-ng-disabled="loginForm.$invalid" data-ng-click="save()">Activate</button>
        </form>