This fixes issue #2146. The inverse of a one2many field can be an inherited
field (_inherits). In that case, we cannot read its value with a simple
database query. Instead, we let the related field read it, but for performance
considerations we disable the prefetching of other fields.
Sometimes a cached bundled could be missing in the
ir.attachment filestore (for example after copying
a database for test purposes without duplicating
the filestore as well).
When this happens ir.attachment will return an empty
file contents ; treat this as a cache miss.
This means empty bundles would not be cached, which
is not a big issue - there is little benefit in
caching them, and they should not be common nor
useful.
When deleting filesystem-backed attachements, the
deletion on the file-system is not transactional.
In the event of a transaction rollback, the file
deletion would not be rolled back, which is a
dangerous side-effect.
This can happen for example when several transactions
try to delete the same file(s) at the same time.
The duplicate deletions might be detected by the
database (being concurrent update errors), and rolled
back at the point of the DELETE query, to be retried.
If the files have already been deleted in the file
system it before the rollback, it leaves the system
in an inconsistent state, at least temporarily.
One case where we have seen it is when web bundles
are loaded by many web users at the same time, right
after being updated (and thus invalidated).
As they are currently cached as ir.attachment records,
this often causes a corruption of the cache.
Add an attribute 'related_sudo' (True by default) for related fields.
A related field is computed as superuser if related_sudo is True.
Add explicit related fields 'name' and 'email' on 'res.users', as these should
be readable by the public user with module website_forum.
The test in test_ir_model creates a custom model. This causes a full reload of
the registry, which recursively installs the required modules while 'base' is
being tested. As a side effect, it commits stuff from the database, so that
the effects of test_ir_model are actually not rolled back.
This fixes a bug which is usually triggered in module account_followup, but
does not occur deterministically. Some recomputations of computed fields are
apparently missing. Environment objects containing recomputations todos and
kept alive by a WeakSet, are removed by the Python garbage collector before
recomputation takes place. We fix the bug by moving the recomputation todos in
a non-weakref'ed object.
When a relational field is assigned in an onchange, its inverse field is
updated in cache. Reading the current value of the inverse field may be
costly, for instance in the case of a one2many field with thousands of records
as a value. Instead, put in cache a SpecialValue that reads and updates the
field; it will be triggered only when it is accessed.
When reading a one2many field, the inverse mapping of the lines (matching m2o -> lines of corresponding record) was instantiating each line and then triggering the prefect of fields.
To improve the performances, the inverse mapping is done in sql to avoid triggering the prefetching.
Raphael Collet
Christophe Simonis
Xavier Morel
Olivier Dony
David Monjoie
Fabien Meghazi
qdp-odoo
xmo-odoo
Pedro M. Baeza
antonylesuisse
Stéphane Wirtel
Simon Lejeune
Martin Trigaux
Yannick Vaucher
Antony Lesuisse
andreparames
Leonardo Donelli
Denis Ledoux