Re: [Zope-dev] Getting to container from a method called by the factory
- Original Message - From: "Itamar Shtull-Trauring" <[EMAIL PROTECTED]> To: "Kevin Dangoor" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Wednesday, June 07, 2000 3:44 AM Subject: Re: [Zope-dev] Getting to container from a method called by the factory > Kevin Dangoor wrote: > > I'm trying to check if the container from which the user selected a > > product from the add menu has an "acl_users" folder. When the user selects > > the option from the add menu, they get a form. When they submit the form, > > the method (a PythonMethod) does this: > > > > folder=self.Destination() > > if hasattr(folder, 'acl_users'): > > ...do something... > > else: > > ...complain... > > > > Even though I know the folder has an acl_users (and having this function > > return folder.objectIds() proves it), the above code will always complain. > > Is there a problem with using hasattr in this context? > > Well, first of all, because of acquisition, if there's a acl_users at the > top level this will always return true. I didn't think hasattr() used acquisition... I thought hasattr would tell you if something is within that object itself. > Next, PythonMethods have trouble > with hasattr AFAIK - so instead do: I didn't realize this. > > folder=self.Destination() > if 'acl_users' in folder.objectIds(): >...do something... > else: >...complain... Yep. I thought of that one, too. I figured hasattr might be more efficient in large folders. In this particular context, that little bit of efficiency is not important and your example would work fine. Thanks for the tip. Kevin ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Getting to container from a method called by the factory
Kevin Dangoor wrote: > I'm trying to check if the container from which the user selected a > product from the add menu has an "acl_users" folder. When the user selects > the option from the add menu, they get a form. When they submit the form, > the method (a PythonMethod) does this: > > folder=self.Destination() > if hasattr(folder, 'acl_users'): > ...do something... > else: > ...complain... > > Even though I know the folder has an acl_users (and having this function > return folder.objectIds() proves it), the above code will always complain. > Is there a problem with using hasattr in this context? Well, first of all, because of acquisition, if there's a acl_users at the top level this will always return true. Next, PythonMethods have trouble with hasattr AFAIK - so instead do: folder=self.Destination() if 'acl_users' in folder.objectIds(): ...do something... else: ...complain... -- Itamar S.T. [EMAIL PROTECTED] "It don't get thingier than that!" ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Getting to container from a method called by the factory
I'm trying to check if the container from which the user selected a product from the add menu has an "acl_users" folder. When the user selects the option from the add menu, they get a form. When they submit the form, the method (a PythonMethod) does this: folder=self.Destination() if hasattr(folder, 'acl_users'): ...do something... else: ...complain... Even though I know the folder has an acl_users (and having this function return folder.objectIds() proves it), the above code will always complain. Is there a problem with using hasattr in this context? Kevin http://www.byproducts.com - Humor and Novelties ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
