Re: Change in the views, extensions need to be updated!

Hi Guido,

Sounds neat!  Hopefully this will make it easier to render preview vs. public 
versions of content...no more testing to see if the url is preview_html, or a 
flag is set in the request!  Yeah!

Do you know if there is any work being done to the EditorSupport that will 
append '/preview_html' to local links if you are viewing with 
'/preview_html'?  I created a custom editorsupport to do this...

Is this part of HEAD, so Silva-1.2, or will this be back-ported to 1.1?

Thanks!
Andy

On Monday 25 October 2004 08:02, Guido Wesdorp wrote:
> Hi!
>
> I have recently made a change to the way public views are registered and
> used in Silva that breaks existing extensions: to make it possible to
> view versions other than the current previewable and viewable ones I
> added a new 'view type' called 'preview', changed the registration of
> the 'public' and 'preview' view types so they get registered to Version
> objects rather then VersionedContent ones, and changed the setup of the
> public view directories so they have either a single script called
> 'render' that renders both the public and preview versions, or a dir
> called 'view' that contains a 'render' script for the public view type,
> and one called 'preview' that contans a 'render' script for the
> 'preview' view type.
>
> In other words, to fix an existing extension to work with the current
> trunk version of Silva, you will need to:
>
> - Change install.py so that instead of the versioned content metatype
> (e.g. 'Silva Document' for the SilvaDocument product) the version
> metatype (e.g. 'Silva Document Version' for SilvaDocument) is registered
> for the 'public' view type and add, if you want to have a seperate view
> for previewing a version, an additional line for the 'preview' view type.
>
> Example:
>
> # old install.py, the VersionedContent object is registered for 'public'
> view type only
> reg.register('public', 'Silva Ghost', ['public', 'Ghost', 'view'])
>
> # new install.py, the Version object is registered for both 'view' and
> 'preview' view types
> reg.register('public', 'Silva Ghost Version', ['public', 'Ghost', 'view'])
> reg.register('preview', 'Silva Ghost Version', ['public', 'Ghost',
> 'preview'])
>
> Note that in this case we register both a 'public' and a 'preview' view
> type, you will only have to do that if you want a different view script
> for the public view and the preview of an object.
>
> - Change the 'views/public/<meta_type>' directory: currently it contains
> 2 scripts, one called 'render_view' and one called 'render_preview'.
> Those scripts will need to be replaced with either a single script
> called 'render' or with two directories called 'view' and 'preview',
> each containing a script called 'render'. The 'render' script(s) van get
> a reference to the version to be rendered from the attribute 'model' on
> request, so calls to e.g. 'model.get_previewable()' should not be made
> anymore, since model refers to a Version object rather then its
> VersionedContent 'container'.
>
> I hope this is sort of clear, it's a pretty simple change but kind of
> hard to explain... For an example on how to perform the refactoring, see
> the Silva core's 'install.py' script and 'views/public' directory, if
> you have questions about this change, don't hesitate to send me an email.
>
> Cheers,
>
> Guido
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