On Thursday 27 April 2006 13:09, Igor Murashkin wrote:
> Very cool, are you doing some magic for the "Page Properties" feature
> (where you can CRUD it), so as to make it as easy as defining a few new
> models when someone wants to make a different type of page?
In the end TG-Content will use Widgets and each controller will define a _form
which can be a prepended/appended or otherwise modified copy of the parent
classes' _form. TG-Content uses a lot of inheritance, both in the model and
controller:
## From: content.components.model
class Atom(InheritableSQLObject):
class sqlmeta:
table = "atom"
Name = UnicodeCol(length=255)
Title = UnicodeCol(length=255)
Description = UnicodeCol(default=None)
Navigable = BoolCol(default=True)
Keywords = RelatedJoin('Keyword')
Author = ForeignKey('Account', default=None)
Effective = DateTimeCol(default=None)
Expiration = DateTimeCol(default=None)
Created = DateTimeCol(default=datetime.now)
Updated = DateTimeCol(default=datetime.now)
Language = ForeignKey('Language', default=None)
Copyright = UnicodeCol(default = None)
Related = RelatedJoin('Atom', intermediateTable="related_atoms",
joinColumn='atom', otherColumn='related', addRemoveName="Relation")
class Page(Atom):
class sqlmeta:
table = "pages"
Content = UnicodeCol(default=None)
Type = UnicodeCol(length=200, default="application/xhtml+xml")
Related = RelatedJoin('Atom', intermediateTable="page_related")
class Folder(Atom):
class sqlmeta:
table = "folders"
DefaultView = EnumCol(enumValues=['error', 'summary', 'list'],
default='summary')
DefaultAtom = ForeignKey('Atom', default=None)
#Children = --- insert crazy code here ---
class File(Atom):
class sqlmeta:
table = "files"
Type = UnicodeCol(length=200, default="application/octet-stream")
Data = BLOBCol(length=2**32-1, default=None)
## From: shopping.model
class Product(model.Page):
class sqlmeta:
table = "products"
Price = CurrencyCol(default=None)
Stock = IntCol(default=None)
#...
## From: content.components.controllers
class Atom(Controller):
def __init__(self, id, path = None, parent = None):
self.id = id
self.path = path
self.parent = parent
@turbogears.expose()
def _remove(self, name, id):
pass # ... delete DB and controller tree records
@turbogears.expose(html=".templates.Atom.properties")
@content.expose()
def _properties(self, *args, **kwargs):
pass # ... update properties
class Page(Atom):
@turbogears.expose()
def index(self, **kwargs):
return self._view(**kwargs)
@turbogears.expose(html=".templates.Page.view")
@content.expose()
def _view(self):
return dict()
@turbogears.expose(html=".templates.Page.modify")
@content.expose()
def _modify(self, **kwargs):
pass # ... perform update stuff
@turbogears.expose(html=".templates.Page.download")
def _source(self):
"""Display a very simple representation of the page."""
node = model.Atom.get(self.id)
return dict(controller=self, node=node)
class Folder(Atom):
@turbogears.expose()
def index(self, **kwargs):
pass # ... display listing, default atom, or error
@turbogears.expose(html=".templates.Folder.modify")
@content.expose()
def _modify(self, **kwargs):
pass # ... perform update stuff
@turbogears.expose(html=".templates.Folder.create")
@content.expose()
def _create(self, **kwargs):
pass # ... create a new element filling only base properties, then
# redirect to _modify.
@turbogears.expose(html=".templates.Folder.contents")
@content.expose()
def _contents(self, style='summary'):
return dict(style=style)
@turbogears.expose()
def _sort(self, order):
pass # ... ajax drag-n-drop sort handler
class RootController(Folder, turbogears.controllers.RootController):
"""Content-managed site root. Inherit your root from this."""
def __init__(self):
root = model.Folder.get(1)
Folder.__init__(self, 1, "/", None)
controllers.descend(self, root, parent_class=self)
@turbogears.expose(html=".templates.sitemap")
def sitemap_xml(self):
pass # ... generate Google Sitemap
@turbogears.expose(html=".templates.authenticate")
def _authenticate(self, forward_url=None, previous_url=None, *args,
**kwargs):
pass # ... handle identity signin/signout requests
## From: shopping.controllers
class Product(controllers.Page):
@turbogears.expose(html=".templates.Product.view")
@content.expose()
def _view(self):
return dict()
@turbogears.expose(html=".templates.Product.modify")
@content.expose()
def _modify(self, **kwargs):
pass # ... handle product-specific updates then cascade to Page._modify.
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