| (in-package :forms) |
|
|
| (defparameter +default-datetime-format+ |
| '((:YEAR 4) #\- (:MONTH 2) #\- (:DAY 2) #\T (:HOUR 2) #\: (:MIN 2) #\: (:SEC 2))) |
|
|
| (defclass datetime-form-field (form-field) |
| ((datetime-min :initarg :min |
| :accessor datetime-min |
| :initform nil) |
| (datetime-max :initarg :max |
| :accessor datetime-max |
| :initform nil) |
| (datetime-format :initarg :datetime-format |
| :accessor datetime-format |
| :initform +default-datetime-format+) |
| (widget :initarg :widget |
| :accessor field-widget |
| :initform nil)) |
| (:default-initargs |
| :placeholder "YYYY-MM-DDTHH:MM:SS") |
| (:documentation "A date input field")) |
|
|
| (defclass datetime-validator (clavier:validator) |
| ((datetime-format :initarg :datetime-format |
| :accessor datetime-format |
| :initform +default-datetime-format+)) |
| (:metaclass c2mop:funcallable-standard-class) |
| (:default-initargs |
| :message (lambda (validator object) |
| (declare (ignorable validator object)) |
| "The datetime is invalid")) |
| (:documentation "A datetime validator. TODO: should perhaps be part of clavier validators")) |
|
|
| (defmethod clavier::%validate ((validator datetime-validator) object &rest args) |
| (declare (ignore args)) |
| (and |
| (local-time:parse-timestring |
| object |
| :fail-on-error nil |
| :date-separator #\- |
| :allow-missing-time-part nil) |
| t)) |
|
|
| |
|
|
| (defmethod validate-form-field ((form-field datetime-form-field)) |
| (let ((validator (clavier:fn (lambda (datetime) |
| (typep datetime 'local-time:timestamp)) |
| (or (field-invalid-message form-field) |
| "The datetime is invalid")))) |
| (multiple-value-bind (valid-p error) |
| (funcall validator |
| (field-value form-field)) |
| (multiple-value-bind (valid-constraints-p errors) |
| (call-next-method) |
| (values (and valid-p valid-constraints-p) |
| (if error (cons error errors) |
| errors)))))) |
|
|
| (defmethod field-read-from-request ((field datetime-form-field) form parameters) |
| (let ((value (cdr (assoc (field-request-name field form) parameters :test #'string=)))) |
| (setf (field-value field) |
| (or |
| (and value |
| (local-time:parse-timestring |
| value |
| :date-separator #\- |
| :allow-missing-time-part nil |
| :fail-on-error nil)) |
| (if (string= value "") |
| nil |
| value))))) |
|
|
| (defmethod format-field-value ((field datetime-form-field) value &optional (stream *standard-output*)) |
| (if (typep value 'local-time:timestamp) |
| (local-time:format-timestring stream value :format (datetime-format field)) |
| (call-next-method))) |
|
|
| (defmethod make-form-field ((field-type (eql :datetime)) &rest args) |
| (apply #'make-instance 'datetime-form-field args)) |
|
|
