As the title suggests, there’s a conflict between a Zeo database instance being run together with a Plone 4/Zope instance, and them trying to share the same blob storage folder.  But, this only happens if you misunderstand or incorrectly set the option of  shared-blob = off, and blob-storage to be the same location as for Zeo in your buildout.  If that previous set of (seemingly jumbled) thoughts doesn’t make any sense to you, then move along, nothing to see here. (more…)

Leftovers are typically useful when they’re in your fridge at home. They mean you don’t have to mess around making lunch for the next day for work, and can just grab them, and walk right out the door. Now, leftovers in the zope.component SiteManager aren’t so nice, especially when some Plone products fail to remove what they’ve registered. The consequences of this are that you’ve got references left which will break things when you uninstall/remove the physical eggs/files. These leftovers would be ones would be mutated food that comes to kill you after you’ve thrown it in the bin, assuming we follow the same analogy. But how to fix them? (more…)

A nice ‘gotcha’ is the distinction between Zope’s schema.Date and schema.Datetime. The difference is obvious and straightforward when the two terms are laid out side-by-side: one is for dates only and the other adds a time component. Where things fell down for me in my usage of these fields with a Dexterity-based content type in Plone is the human component. When these fields are mashed in together within a lot of other text/Python/names, it’s easy to miss those 4 little letters of ‘time’. This lead me trying to use a DatetimeFieldWidget when I really could only use a DateFieldWidget. Wrong widget for the wrong type = unpredictable. (more…)

Due to various reasons, the Products.LDAPUserFolder package available for Plone and Zope doesn’t support POSIX groups.  The ‘official’ (ish) reason for this is because of the fact that these groups don’t store full distinguished names (DNs) for members.  It makes some degree of sense, because a user ID like ‘david.test’ isn’t strictly unique.  On the other hand, these types of groups are quite common in LDAP implementations; not supporting them without giving it at least half a shot to find the user seems a bit strange. (more…)

These titles of my posts just keep getting longer and longer.  For those of you paying close attention (I know who you are), this is the next in my series of getting the above-mentioned tools working together.  Previously, it was Centos 5.x, Jaunty (9.04), Karmic (9.10) and now Lucid (10.04).  Only subtly different, each of this distributions has pretty much called for its own post on the matter of getting a working Plone 3.x / Python 2.4 virtualenv installation going.  So, here goes this time around. (more…)