':field must contain only letters', 'alpha_dash' => ':field must contain only numbers, letters and dashes', 'alpha_numeric' => ':field must contain only letters and numbers', 'color' => ':field must be a color', 'credit_card' => ':field must be a credit card number', 'date' => ':field must be a date', 'decimal' => ':field must be a decimal with :param1 places', 'digit' => ':field must be a digit', 'email' => ':field must be a email address', 'email_domain' => ':field must contain a valid email domain', 'equals' => ':field must equal :param1', 'exact_length' => ':field must be exactly :param1 characters long', 'in_array' => ':field must be one of the available options', 'ip' => ':field must be an ip address', 'matches' => ':field must be the same as :param1', 'min_length' => ':field must be at least :param1 characters long', 'max_length' => ':field must be less than :param1 characters long', 'not_empty' => ':field must not be empty', 'numeric' => ':field must be numeric', 'phone' => ':field must be a phone number', 'range' => ':field must be within the range of :param1 to :param2', 'regex' => ':field does not match the required format', 'url' => ':field must be a url', );