[Product-Developers] [Dexterity] How to register a browser:page?

[David Glick]

On 2/9/12 10:12 AM, Andreas Jung wrote:
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> <browser:page>  ZCML registrations require a class or an interface.
>
> But how to I register a browser:page for a dexterity type that has
> been defined through the web?
>
> It seems to be possible to catch all Dexterity instance using
> a registration for plone.dexterity.interfaces.IDexterityContent
> however that's pretty unspecific.
>
> What's the pattern here?
>
Lots of options...

1. There is actually an automatically generated interface you could use. 
To use it you need to know its full dotted path, of course. It is in a 
dynamic module (a la plone.alterego) called 
plone.dexterity.schema.generated. You can look up the name of the schema 
within that module this way:
from plone.dexterity.utils import portalTypeToSchemaName
schema_name = portalTypeToSchemaName(portal_type, u'', portal_id)

(Or look at the code in plone.dexterity.utils...it is a pretty simple 
concatenation and encoding of those 3 arguments). I think it ends up 
something like plone.dexterity.schema.generated.myportal_0_myportaltype_0_

2. Export your schema as supermodel XML (using the button in the 
Dexterity types control panel). Put it in a file, and then load that 
file into your custom interface that you name yourself, like this:

from plone.directives import form, Schema

class IMyContent(Schema):
     model('path/to/model.xml')

Then register the browser view for IMyContent.

(The downside to this one is that you can no longer modify the schema 
through the web.)

3. Write a behavior which adds a marker interface; then turn on that 
behavior for your content type and register your view for the marker 
interface.

4. Do it like in archetypes...create a view named mytype_view that's 
technically available for all Dexterity content, but only list it as an 
available layout in the FTI for your type. (Probably my least favorite 
of the options.)

David


----------		
David Glick
 Web Developer
 davidglick at groundwire.org
 206.286.1235x32

Engagement technology for social and environmental change.

http://www.groundwire.org