[Grok-dev] Setting up a Grok app instance via buildout...

[Jeffrey Peterson]

Thanks!  Worked great.

Jeffrey Peterson
bgpete3 at gmail.com



On Jun 14, 2012, at 1:59 AM, Jan-Jaap Driessen wrote:

> On Wed, Jun 13, 2012 at 9:16 PM, Jeffrey Peterson <bgpete at gmail.com> wrote:
>> Is there any way to do this?
>> 
>> Essentially I want to replicate setting up the instance in the Grok Admin UI
>> using buildout.
>> 
>> TIA.
> 
> Hi Jeffrey,
> 
> We use zope.generations [1] for that.
> 
> In yourpackage/evolution.py:
> 
> """
> import grok
> from zope.generations.interfaces import IInstallableSchemaManager
> from zope.generations.utility import getRootFolder
> from zope.component.hooks import setSite
> 
> class Evolution(grok.GlobalUtility):
>    grok.name('your-descriptive-name')
>    grok.implements(IInstallableSchemaManager)
> 
>    minimum_generation = generation = 1
> 
>    def install(self, context):
>        root = getRootFolder(context)
>        setSite(root)
>        '''
>        Your setup code goes here
>        '''
> 
>    def evolve(self, context, generation):
>        func = getattr(self, '_%s' % generation)
>        func(getRootFolder(context))
> 
>    def _1(self, root):
>        '''
>        Your evolution code for v1 goes here.
>        '''
> """
> 
> And in configure.zcml:
> 
> '''
> <!--
> applications typically like to have all evolutionary steps applied
> onto the application objects.
> -->
> <subscriber
>  handler="zope.generations.generations.evolveSubscriber"
>  for="zope.processlifetime.IDatabaseOpenedWithRoot"
> />
> '''
> 
> The "install" code will be executed when the application is started
> with an empty ZODB. We use this point to set up fixtures and are not
> using grokui admin any longer.
> 
> HTH,
> 
> JJ
> 
> 1) http://pypi.python.org/pypi/zope.generations

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