[BlueBream] Views for basic ZODB control

[Baiju M]

On Fri, Mar 5, 2010 at 1:57 PM, Adam GROSZER <agroszer at gmail.com> wrote:
> Have a look a zam* packages. No need to reinvent the wheel.

I was able to run zam.demo with few changes.

While doing this I was taking note for Zope 3.4 -> BB 1.0 migration :)
I am expecting these kind of notes from others.  I will add this to
our migration document: http://bluebream.zope.org/doc/1.0/new/whatsnew-1.0.html
(I hope by next month I will get more feedback about migration)


Possible errors and solutions
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

While running buildout, you may get module import errors like this::

  ConfigurationError: ('Invalid value for', 'package', 'ImportError:
Module zope.app has no global authentication')
  ConfigurationError: ('Invalid value for', 'package', 'ImportError:
Module zope.app has no global broken')
  ConfigurationError: ('Invalid value for', 'package', 'ImportError:
Module zope.app has no global error')
  ConfigurationError: ('Invalid value for', 'package', 'ImportError:
Module zope.app has no global i18n')
  ConfigurationError: ('Invalid value for', 'package', 'ImportError:
Module zope.app has no global session')
  ConfigurationError: ('Invalid value for', 'package', 'ImportError:
Module zope.app has no global schema')
  ConfigurationError: ('Invalid value for', 'package', 'ImportError:
Module zope.app has no global zopeappgenerations')
  ConfigurationError: ('Invalid value for', 'package', 'ImportError:
Module zope.app has no global keyreference')
  ConfigurationError: ('Invalid value for', 'package', 'ImportError:
Module zope.app has no global principalannotation')

**Solution**

Add the egg name (Eg:- ``zope.app.principalannotation``) to
``install_requires`` inside ``setup.py`` as given here.  Aftern
adding this, you need to run ``./bin/buildout`` command again.

::

  install_requires=['setuptools',
                    ...
                    'zope.app.authentication',
                    'zope.app.broken',
                    'zope.app.error',
                    'zope.app.i18n',
                    'zope.app.session',
                    'zope.app.schema',
                    'zope.app.zopeappgenerations',
                    'zope.app.keyreference',
                    'zope.app.principalannotation',
                    ...
                    ],

Another solution is to inlude egg name (Eg:-
``zope.app.principalannotation``) in the Buildout part where other
eggs are listed using``zc.recipe.egg`` recipe as given here::

  [app]
  recipe = zc.recipe.egg
  eggs = samplproject
         ...
         zope.app.authentication
         zope.app.broken
         zope.app.error
         zope.app.i18n
         zope.app.session
         zope.app.schema
         zope.app.zopeappgenerations
         zope.app.keyreference
         zope.app.principalannotation
  interpreter = breampy

Import error: ``zope.app.folder.interfaces.IFolder``

If you get error like this::

    ZopeXMLConfigurationError: File
"/home/baiju/myapp/src/myapp/browser.zcml", line 21.2-27.8
    ConfigurationError: ('Invalid value for', 'for', "ImportError:
Couldn't import zope.app.folder.interfaces, No module named
folder.interfaces")

Open the ``browser.zcml`` file and look at line number 21, inside that
ZCML declaration change:
``zope.app.folder.interfaces.IFolder`` to ``zope.site.interfaces.IFolder``.

If you get error like this::

  raise ValueError("Undefined permission id", permission_id)
zope.configuration.config.ConfigurationExecutionError: <type
'exceptions.ValueError'>: ('Undefined permission id',
'zope.ManageApplication')

You need to include ``zope.applicationcontrol`` package in your ZCML
configuration file (``site.zcml``) as the permission definition is
available there.


If you are getting an error like this when accessing ``login.html`` view.

::

  .../eggs/zope.principalregistry-3.7.0-py2.5.egg/zope/principalregistry/principalregistry.py",
  line 82, in unauthorized
     a = ILoginPassword(request)
  TypeError: ('Could not adapt', <zope.publisher.browser.BrowserRequest
  instance URL=http://localhost:9060/@@login.html>, <InterfaceClass
  zope.authentication.interfaces.ILoginPassword>)

You need to include ``zope.login`` package in your ZCML configuration
file (``site.zcml``) as the adapter registration is available there::

   <include package="zope.login" />

Regards,
Baiju M