Rocky Burt Subtyping Unleashed

Subtyping Unleased! Speaker: Rocky Burt

Who I Am Rocky Burt ServerZen Software http://www.serverzen.com Subtyping Unleased! Slide 2 Plone Conference 2007 – Naples

Subtyping?  Narrow classification  Functionality hook Subtyping Unleased! Slide 3 Plone Conference 2007 – Naples

Why Subtype?  Many possible faces for an existing content type  Simple conversion  Delayed specification Subtyping Unleased! Slide 4 Plone Conference 2007 – Naples

Use Cases  Need different content identity depending on situation  Need some way to transform identity based on event reaction Subtyping Unleased! Slide 5 Plone Conference 2007 – Naples

p4a.subtyper  Minimal framework  Hooks up subtypes into content menu Subtyping Unleased! Slide 6 Plone Conference 2007 – Naples

An Example: Setting up p4a.subtyper easy_install p4a.subtyper Subtyping Unleased! Slide 7 Plone Conference 2007 – Naples

An Example: Creating New Package p4a.subtyperdemo Example source at: http://www.plone4artists.org /svn/projects/p4a.subtyperdemo/ Subtyping Unleased! Slide 8 Plone Conference 2007 – Naples

An Example: Sub-type Marker Interface  New module named interfaces  New interface named IUltraDoc Subtyping Unleased! Slide 9 Plone Conference 2007 – Naples

An Example: Sub-type Marker Interface class IUltraDoc(interface.Interface): quot;quot;quot;A new ultra document subtype.quot;quot;quot; interface.alsoProvides(IUltraDoc, IContentType) Subtyping Unleased! Slide 10 Plone Conference 2007 – Naples

An Example: Sub-type Descriptor  New module named descriptors  New descriptor named UltraDocDescriptor Subtyping Unleased! Slide 11 Plone Conference 2007 – Naples

An Example: Sub-type Descriptor class UltraDocDescriptor(object): implements(IPortalTypedDescriptor) title = u'Ultra Doc' description = u'New ultra style ' u'document.' type_interface = IUltraDoc for_portal_type = 'Document Subtyping Unleased! Slide 12 Plone Conference 2007 – Naples

An Example: New View  New template called ultradoc.pt Subtyping Unleased! Slide 13 Plone Conference 2007 – Naples

An Example: New View <div metal:fill-slot=quot;mainquot;> <h2>This is an ultradoc!</h2> <h3 tal:content=quot;context/Titlequot;></h3> <p tal:content=quot;context/Descriptionquot;></p> </div> Subtyping Unleased! Slide 14 Plone Conference 2007 – Naples

An Example: Tying Together – ZCML  Register descriptor as utility  Hook new view up applying to marker interface Subtyping Unleased! Slide 15 Plone Conference 2007 – Naples

An Example: Tying Together – ZCML <utility name=quot;ultradocquot; factory=quot;.descriptors.UltraDocDescriptorquot; /> <browser:page for=quot;.interfaces.IUltraDocquot; name=quot;document_viewquot; permission=quot;zope2.Viewquot; template=quot;ultradoc.ptquot; /> Subtyping Unleased! Slide 16 Plone Conference 2007 – Naples

An Example: Before Subtyping Unleased! Slide 17 Plone Conference 2007 – Naples

An Example: After Subtyping Unleased! Slide 18 Plone Conference 2007 – Naples

An Example: Regular Content Subtyping Unleased! Slide 19 Plone Conference 2007 – Naples

Other Features  Special subtype events  Extension by adapters and schema's Subtyping Unleased! Slide 20 Plone Conference 2007 – Naples

Conclusion Questions? Comments? Resources at: http://www.serverzen.com /training/subtyping-unleashed Subtyping Unleased! Slide 21 Plone Conference 2007 – Naples

Rocky Burt Subtyping Unleashed

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Rocky Burt Subtyping Unleashed Presentation Transcript