jii/validators/UrlValidator.js

Jii - Full-Stack JavaScript Framework

/**
 * @author <a href="http://www.affka.ru">Vladimir Kozhin</a>
 * @license MIT
 */

'use strict';

const Jii = require('../BaseJii');
const _isString = require('lodash/isString');
const _each = require('lodash/each');
const Validator = require('./Validator');

class UrlValidator extends Validator {

    preInit() {
        this.defaultScheme = null;
        this.validSchemes = [
            'http',
            'https'
        ];
        this.pattern = /^{schemes}:\/\/(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)/i;

        super.preInit(...arguments);
    }

    init() {
        super.init();
        if (this.message === null) {
            this.message = Jii.t('jii', '{attribute} is not a valid URL.');
        }
    }

    validateAttribute(object, attribute) {
        var value = object.get(attribute);
        if (!this.validateValue(value)) {
            this.addError(object, attribute, this.message);
        } else if (this.defaultScheme !== null && value.indexOf('://') === -1) {
            object.set(attribute, this.defaultScheme + '://' + value);
        }
    }

    validateValue(value) {
        if (!_isString(value) || value.length > 2000) {
            return false;
        }

        if (this.defaultScheme !== null && value.indexOf('://') === -1) {
            value = this.defaultScheme + '://' + value;
        }

        var pattern = this.pattern.source;
        pattern = pattern.replace('{schemes}', '(' + this.validSchemes.join('|') + ')');

        var flags = '';
        _each({
            global: 'g',
            ignoreCase: 'i',
            multiline: 'm'
        }, (flag, key) => {
            if (this.pattern[key]) {
                flags += flag;
            }
        });

        return new RegExp(pattern, flags).test(value);
    }

}
module.exports = UrlValidator;