[Grok-dev] Generations problem

[Svenn Helge Grindhaug]

On Thursday, September 08, 2011 03:32:28 PM Christian Klinger wrote:
> Hi Svenn,
> 
> i guess this is because the configure.zcml from zope.generations is not
> picked up. You can do two things:
> 
> 1) Put zope.generations in your setup.py  --> install-requires.
> 2) add <include pacakge="zope.generations"> in your configure.zcml

1) was already there and adding 2) and fixing the typo (see below) did not 
result in having the hodweb app being added at first startup.

I also added a pdb in zope.generations.generations.SchemaManager.install, but 
it never get called.

This is working fine in an other project but then with Grok 1.0 and 
zope.app.generations instead of zope.generations.

Does Grok 1.4 and zope.generations work for everyone else?

Cheers,

Svenn.

> I created a modified version in the "not yet released" documentation of
> grok [1]
> 
> Hope this helps
> Christian
> 
> [1]
> https://bitbucket.org/jhsware/grok-doc/src/62ff456c0eec/source/topics/gener
> ations.rst
> 
> > Hi,
> > 
> > I'm having problems getting zope.generations to work with Grok 1.4. I'm
> > following the howto here:
> > 
> > http://grok.zope.org/doc/community/topics/generations.html
> > 
> > I want to have an instance of my app installed in the root folder on
> > first startup. But the evolve function in hodweb.generation.install is
> > never called. I don't get any error messages either.
> > 
> > Suggestions appreciated.
> > 
> > 
> > [hodweb.app]
> > 
> > import grok
> > 
> > from hodweb import resource
> > import zope.interface
> > 
> > class Hodweb(grok.Application, grok.Container):
> >      pass
> > 
> > [hodweb.generations.util]
> > 
> > import grok
> > from zope.generations.generations import SchemaManager
> > from zope.generations.interfaces import ISchemaManager
> > 
> > 
> > schemaManager = SchemaManager(
> > 
> >      minimum_generation=0,
> >      generation=0,
> >      package_name='hodweb.generation'

Typo. It should say 'hodweb.generations'. Fixing it did not help.

> > )
> > 
> > 
> > grok.global_utility(
> > 
> >      schemaManager,
> >      provides=ISchemaManager,
> >      name="hodweb",
> >      direct=True
> > 
> > )
> > 
> > [hodweb.generations.install]
> > 
> > from hodweb.app import Hodweb
> > from zope.generations.utility import getRootFolder
> > 
> > def evolve(context):
> >      root = getRootFolder(context)
> >      root['app'] = Hodweb()
> >      print "CREATED App"
> > 
> > Best regards,
> > 
> > Svenn.
> 
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