[Seaside] Rendering Component in a WAPragmaBasedRestfulHandler

Camillo Bruni camillo.bruni at inria.fr
Wed Apr 13 16:36:56 UTC 2011

Well I think its currently quite hard to do a nice transition from a normal seaside application using the default, non-readable url to an application with nice urls.

Since extracting the state from the URL is pretty straight forward, though much nicer with the pragma-based approach in REST. However, since I come from the Django world, I expect some simple dispatch logic to map from the URLs to the existing components.

But lets try and figure out if it will work ;)


On 2011-04-13, at 18:28, Julian Fitzell wrote:

> Unless, you're re-using some of the rendering code in multiple places,
> you might find it cleaner to simply subclass
> WAPragmaBasedRestfulHandler to provide a renderer. It could even be
> implemented with an additional pragma instead of hardcoding:
> MyFilter>>#listingOfProject: projectName on: html
>       <GET>
>       <Path: '/{projectName}'>
>       <Renderer: #WARenderCanvas>
>       "Or, alternatively just: <Canvas>"
>       html text: 'hello world'
> You could of course then "html render: anObject", though I'd suggest
> that you don't really want to use components here, because you have no
> session and thus no state for them to maintain. You would probably be
> better to subclass WAPainter if you want to re-use some rendering code
> in several places.
> Julian
> On Wed, Apr 13, 2011 at 5:10 PM, Tobias Pape <Das.Linux at gmx.de> wrote:
>> Am 2011-04-13 um 17:38 schrieb Camillo Bruni:
>>> Hi,
>>> I am onto building test website in seaside which should have nice urls. I stumbled upon the Seaside-REST package, which seems like a nice solution to map the urls onto state and components.
>>> However so far I could not figure out how I should render a component from within a WAPragmaBasedRestfulHandler method.
>>> This is how I imagine it should work:
>>> request -> stateful request handler -> choose component and initialize state -> render component
>>> What is the proper way to do this?
>> Think of this:
>> MyFilter>>#listingOfProject: projectName
>>        <GET>
>>        <Path: '/{projectName}'>
>>        MyComponent new respondRendered
>> with
>> MyComponent>>#respondRendered
>>        self requestContext respond: [:response |
>>                response
>>                        contentType: WAMimeType textHtml;
>>                        nextPutAll: (   WARenderCanvas builder
>>                                fullDocument: true;
>>                                rootBlock: [ :root |
>>                                        self updateRoot:root ];
>>                                render: [ :canvas |
>>                                        self renderContentOn: canvas ])].
>> This merely emulates a normal seaside run.
>> But more elaborate versions are possible.
>> So Long,
>>        -Tobias_______________________________________________
>> seaside mailing list
>> seaside at lists.squeakfoundation.org
>> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside
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