module.exports = function(Self) {
    Self.validateBinded('quantity', validateQuantity, {
        message: 'Enter an integer different to zero',
        allowNull: false,
        allowBlank: false
    });

    function validateQuantity(quantity) {
        return !isNaN(quantity) && quantity != 0;
    }

    Self.validatesPresenceOf('packagingFk', {message: 'The package cannot be blank'});
};