[Zope-CMF] getting an object's factory
26 Feb 2003 08:53:05 -0500
On Wed, 2003-02-26 at 07:58, Mark McEahern wrote:
> Suppose I have a portal object and I want to serialize (to disk) the minimum
> amount of information I need to create another one. I'm currently doing
> # Store type_name on disk.
> type_name = item.getTypeInfo().Title()
Rather than using the (possibly L10N-ized) Title() method of the type
info object, just use the 'getPortalTypeName()' method of the item:
# Store type_name on disk.
type_name = item.getPortalTypeName()
> # later, I can create an instance...
> parent.invokeFactory(type_name=type_name, id=new_id)
> Is the fact that this currently works coincidental?
Nope. the type_name bit is first and foremost an ID for the
"constructor" or "factory" for objects of that type; your usage is
> Is there a clearer
> approach? I'm purposefully not spelling out more of the approach because I
> assume it's irrelevant. I'm probably wrong about that. ;-)
Serializing content to the filesystem in a general way is a tricky
problem. If you have only a bounded set of content types to deal with,
you can usually do a pretty good job (e.g., using the 'manage_FTPGet'
representation should work pretty well for most of the CMFDefault's
Tres Seaver firstname.lastname@example.org
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