Before this commit, trying to create a field related to another field in
the same batch raises an error, because the computation of the field
'related_field_id' cannot find the target field in the registry.
The new approach consists in getting the target field from the database
instead. It works when creating fields in batch, because all records
are inserted into the database before the field is computated.
This costs extra queries, but it allows to batch field creation and
avoids multiple calls to setup_models() when creating a model with
partner field in Studio. (see odoo/enterprise#21746)
The creation of a simple custom related field (related="x.y") costs 3
additional queries to determine the target field:
- 2 queries to get a given field on a given model
- 1 query to get the first field's comodel
Part-of: odoo/odoo#78514
Raphael Collet
76f699ca0b