odoo/odoo#198124

Created by Framework (ORM), Raphael Collet
Merged at 3fb9fda5306262c2edbdcbc56b76c3fbe1055b2c

Statuses:

label
odoo-dev:16.0-prefetch-new-lines-rco
head
d2fac4fb5732f06badc0a18717f4c9fa6199b1d7
merged
8 months ago by Framework (ORM), Raphael Collet
odoo/odoo
16.0 #198124
17.0 #198202
saas-17.4 #198443
18.0 #198448
saas-18.1 #198454
saas-18.2 #198542
saas-18.3
saas-18.4
19.0
master #198749

[FIX] core: prefetching of secondary new records

Consider a recordset of new records, and a loop like

for record in records:
    for line in record.line_ids:
        line.value

The implementation of record.line_ids does not actually prefetch all records. It actually fetches the field on the records' origin (their corresponding real records), but only assigns the current new record in cache. As the prefetching relies on the cached values of line_ids, the prefetching mechanism is actually broken on line.

The fix consists in assigning all the records to prefetch in this case. This does not add unexpected prefetching, since the origin records are prefetched as one batch anyway.