[Seaside] Re: [ANN] Update Seaside tutorial

[stephan at stack.nl]

Hmm, interesting timing. But thanks for expanding the tutorial,
excellent job.

Comparing what Philippe and I did at 24C3 with your results,
I have the following remarks:
- descriptions are cached, so descriptionDeadline needs a
     default: [Date tomorrow] asDynamicObject;
- if you want to display the task in a lightbox, there is
   an excellent opportunity to show a decoration:

WADecoration subclass: #StLightBoxDecoration

renderContentOn: html
	html div
		class: 'generic lightbox';
		with: [ self renderOwnerOn: html ]

used with:

createNewTask
	|  component |
	component := StTask new asComponent
		addValidatedForm;
		addMessage: 'Creating task';
		addDecoration: StLightBoxDecoration new;
		yourself.
	(self lightbox: component) ifNotNilDo:[ :task |
		self session db addTask: task toUser: self session user ]

and some slight css changes to handle the validation:

.shortMessageRed, .errors li {
	background-color: #ffb0b0;
	border: 1px solid #ee0000;
	padding: 5px;
	margin-bottom: 10px;
}

- converting StUser to be Magritte-based is not as simple.
   Finding a place where to store the second password line
   for validation is a slightly different problem from the
   well-known multiple-field validation problem.
- you might want to remove the dependency on the cryptography
   package and use SecureHashAlgorithm instead of MD-5.
And further: checkboxes are not supposed to have live action behaviour.

Stephan Eggermont