[Seaside] Re: Seaside and REST

Boris Popov boris at deepcovelabs.com
Thu Mar 29 17:42:48 UTC 2007


See my earlier messages. It's completely up to you, as you get to choose
whether to use anchors (GET) or forms/buttons (POST) when you put your
pages together.



DeepCove Labs Ltd.
4th floor 595 Howe Street
Vancouver, Canada V6C 2T5

boris at deepcovelabs.com


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Thank you.

> -----Original Message-----
> From: seaside-bounces at lists.squeakfoundation.org [mailto:seaside-
> bounces at lists.squeakfoundation.org] On Behalf Of Andreas Raab
> Sent: Thursday, March 29, 2007 10:39 AM
> To: Seaside - general discussion
> Subject: [Seaside] Re: Seaside and REST
> Hi Klaus -
> Klaus D. Witzel wrote:
> > Besides of that, the counter in the Seaside counter example is *not*
> > stored (as would be suggested by POST) but it is incremented. Doing
> > incremental changes to a living object is not addressed by any HTTP
> > request method ;-) For example, all WebDAV resources and Web2Mail
> > scripts are considered to be dead (in the sense of a stateless,
> > repeatable request+response scenario).
> Which indeed they are. Buy my point about the counter example went of
> course a little deeper. I can see the counter as stateless merely by
> assuming that we have a platonic space of integer numbers where plus
> minus are retrievals ;-) However, that gets really hard when we get to
> persistent state that can't be undone easily. Or when one deals with
> files directly. Does Seaside have "special rules" for making such
> modifications or are all of these presented as GET nevertheless?
> > Another illustrating use case is HTTP-tunneling. What method SHOULD
> > NOT use, POST or GET? IIRC they use both and the choice depends on
> > method allows *huge* amounts of bytes transfered upstream (POST) and
> > what not (GET).
> >
> > [this is just from experience, no offense intended.]
> None taken. That is a great question. What is "best practice" these
> days? Just use whatever you feel like? Whatever works most
> >> These methods ought to be considered "safe". This allows user
> >> to represent other methods, such as POST, PUT and DELETE, in a
> >> way, so that the user is made aware of the fact that a possibly
> >> action is being requested."
> >
> > Then, how would you access a constantly changing "document" resource
> > like a Croquet application running elsewhere, with HTTP. HTTP
> > methods where invented with "a resource is a file and the version
> > quality of the file's content can be negotiated by a HTTP method" in
> > mind, IMO.
> True, but for example, in Croquet we have that distinction constantly.
> We have, for example, a method #get: in code which (surprise!) is a
> retrieval, idempotent and safe ;-) And then we have future messages
> (think: POST) which modify the resource (object). And it makes perfect
> sense both conceptually as well as from a practical point of view.
> Cheers,
>    - Andreas
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