Need to instantiate zclass in location other than current
I have created a zclass and want to create a new instance of this class and have it be child of some other know object in the tree. Given that we know the path (url) to the new prospective parent how do we do this. A second question. I need to manage lists of these zobjects within other instances of the same, is there a reason to store the url vs the object(s). I have has some problems getting back a string repr of the object "<instance of .." instead of the object? It would probably be better for me (the code) to store objects thus not need to get the object each time I want to call a method... thanks, Max
Max Slimmer writes:
I have created a zclass and want to create a new instance of this class and have it be child of some other know object in the tree. Given that we know the path (url) to the new prospective parent how do we do this. You locate the destination object with "restrictedTraverse", say "d", and call the constructor on it:
d.manage_addProduct[<your product name>].<your ZClass constructor>(<its parameters>)
A second question. I need to manage lists of these zobjects within other instances of the same, is there a reason to store the url vs the object(s). I have has some problems getting back a string repr of the object "<instance of .." instead of the object? It would probably be better for me (the code) to store objects thus not need to get the object each time I want to call a method... I do not understand this question...
Dieter
On 4/17/02 4:49 PM, "Max Slimmer" <max@theSlimmers.net> wrote:
I have created a zclass and want to create a new instance of this class and have it be child of some other know object in the tree. Given that we know the path (url) to the new prospective parent how do we do this.
I do this a lot, with my own custom add in screens that add objects in special locations. I have it working like this in a python script:: REQUEST = container.REQUEST target = context.content.documents # folder to put the document in ### Create a new instance. new_item = target.manage_addProduct[ 'MyProduct'].MyZClass.createInObjectManager(new_id, REQUEST) ## other operations on the new item new_item.setTitle('Rockabilly Bob') ...
A second question. I need to manage lists of these zobjects within other instances of the same, is there a reason to store the url vs the object(s). I have has some problems getting back a string repr of the object "<instance of .." instead of the object? It would probably be better for me (the code) to store objects thus not need to get the object each time I want to call a method...
You'll want to store the path to the object. Making other 'hard' references to a persistent object in Zope is still a scary proposition. -- Jeffrey P Shell www.cuemedia.com
participants (3)
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Dieter Maurer -
Jeffrey P Shell -
Max Slimmer