plone.directives.dexterity 1.0.2

Grok-like directives for creating Dexterity content
plone.directives.dexterity provides optional, Grok-like directives for configuring Dexterity content. It depends on five.grok, which in turn depends on the various re-usable grokcore.* packages, but not Grok itself.

See also plone.directives.form, which provides directives for configuring schema interfaces with form hints.

Content classes

Content extending the Dexterity 'Item' and 'Container' base classes can be grokked in order to register a factory and/or ZMI add permission.

For example:

from plone.directives import dexterity
from plone.directives import form
from five import grok
from zope import schema

class IPage(form.Schema):

 title = schema.TextLine(title=u"Title")

 description = schema.Text(title=u"Description",
 description=u"Summary of the body")

 body = schema.Text(title=u"Body text",
 required=False,
 default=u"Body text goes here")

 details = schema.Text(title=u"Details",
 required=False)

class FSPage(dexterity.Item):
 grok.implements(IPage)
 grok.name('example.page')

 def __init__(self, id=None, title=None, description=None, body=None, details=None):
 self.id = id # required - or call super() with this argument
 self.title = title
 self.description = description
 self.body = body
 self.details = details


This will register a factory utility if one is not already present with the name 'example.fspage'.

You can also use the 'add_permission()' directive to cause the type to be registered as a Zope 2 content class, in the same way that the < five:registerClass / > directive does:

class ZopeTwoItem(dexterity.Item):
 grok.implements(IPage)
 dexterity.add_permission('cmf.AddPortalContent')
 portal_type = 'example.zopetwopage'


However, for most content types, this will be unnecessary.

Forms

To create a Dexterity add-, edit- or display form for your type, use the AddForm, EditForm or DisplayForm base classes. For example:

from plone.directives import dexterity
from plone.directives import form
from five import grok
from zope import schema

class IPage(form.Schema):

 title = schema.TextLine(title=u"Title")

 description = schema.Text(title=u"Description",
 description=u"Summary of the body")

 body = schema.Text(title=u"Body text",
 required=False,
 default=u"Body text goes here")

 details = schema.Text(title=u"Details",
 required=False)

class View(dexterity.DisplayForm):
 """The view. May will a template from _templates/view.pt,
 and will be called 'view' unless otherwise stated.
 """
 grok.require('zope2.View')
 grok.context(IPage)

class Edit(dexterity.EditForm):
 """A standard edit form.
 """
 grok.context(IPage)

 def updateWidgets(self):
 super(Edit, self).updateWidgets()
 self.widgets['title'].mode = 'hidden'


These forms are grokked in a manner that is similar to plone.directives.form, and support custom template associations. Please note, however:

- When using dexterity.AddForm as a base, you must use the grok.name() directive to give the name of the add view. Usually, this is the same as the name of the Factory Type Information object.
- When using dexterity.EditForm as a base, you must use grok.context() and supply a Dexterity content type interface as an argument. This is to allow proper re-use of types.

last updated on:
September 26th, 2011, 11:58 GMT
price:
FREE!
developed by:
Martin Aspeli
license type:
LGPL (GNU Lesser General Public License) 
category:
ROOT \ Internet \ Plone Extensions

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What's New in This Release:
  • Fix super() call in plone.directives.dexterity.AddForm [davisagli]
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