Thanks for the reply Jake. The parent_id field is created by the V10 OCA module account_analytic_parent which, although not officially migrated to 11, appears to work fine in it. As for 'Base Module Record', my understanding is that it should produce an installable module containing xml code that reflects the changes made during the recording process, though explanatory notes for the module are very limited and I haven't had any luck getting more detailed information from the developers, so I can't really say I know what the module is actually for.

Hi Bill,

Modules built for v10 will generally work in v11 as long as there haven't been changes around the specific part the module is targeting, so this is quite safe.

Your understanding is correct, but the issue comes with the more specific details of Odoo. Even if we ignore the fact that all changes to a models structure should preferably be done in python, not XML, the depends issue is still in play: Any time you do a base upgrade on a copy of the database, it doesn't know which module to install first. If it tries to install your new module before the the module that introduces the 'parent_id' on the 'project.project' model, it with throw an error.

I've taken a look at the 'account_analytic_parent' module that you have spoken about, and it seems that what you're asking is a little trickier than you mentioned. This module introduces parents for analytic accounts, not for projects. Though you could find the parents by finding the projects analytic account, find its' parent analytic account and then find its' related projects, this wouldn't be a straight one to one relationship.

Analytic accounts allow for multiple projects per account, and their parent account could then contain multiple projects. Even if this isn't how you have set your data up, the data types of the fields are structured that way, meaning a simple related field isn't possible.

As a heirarchy you can also have multiple levels of parents, did you want to be able to search grandparents, great-grandparents, etc.?

These kinds of tasks are much more suited to developers, so your best bet is to engage a developer or start learning a little bit of python to unlock the full potential of Odoo.

Regards,

Jake Robinson

Dionysus Software