> > Casey Duncan wrote: > > > Zope2 folders are designed for this. They are really just "blank > > > objects" where you can specify your own methods in instance space. > > > Traditionally in Zope2, there are two ways to do this: by adding > > > "method" objects (External Methods, DTML methods, python scripts, > > > ZPT) directly to the folder. Or by adding these objects "above" the > > > folders and aquiring them which is a type of environmental > > > inheritance. In the CMF this is codified in the skins tool which > > > contains global methods which can be applied to basically any object > > > in the site. > > > > Great explanation - would you give me a hint on the CMF part ? > > Which global methods do you speak of ? > > The CMF has a "Tool" infrastructure. Tools are persistent objects > typically at the top of the CMF site. Tools provide methods and > configuration for use by all objects in the site via acquisition. For > example, the membership tool (portal_membership), provides methods to > access member information and member folders. > > The portal_skins tool is special in that it actually contains framework > and application defined method objects (scripts, templates, etc) > organized into layers and configured into skins (which are lists of > layers to use). The CMF Site object is a special "Skinnable" folder > which allows methods available in the current skin (as described in the > skins tool) to be acquired through it. This makes all of the method > objects in the skin's layers globally available to all objects in the > CMF site. > > This solves several problems, one of which is a tendancy of top-heavy > hierarchies in zope where lots of objects are in the root because they > need to be global. The skin and layer mechanisms allow different sets of > methods to be available depending on the application, products > installed, site policy and user preferences. > > -Casey >
Very interesting. That's what I was looking for. I will try to extract this mechanism from CMF. Thanks a lot for your answers -- Santi Camps http://zetadb.sourceforge.net _______________________________________________ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
