use context {'default_FIELD': ...} on action raise Integrity Error

  affects openobject-server

Version affected:
OpenObject Server 5.0 (stable) - lastest revision id

Steps to reproduce the problem:
1. Modify action related on menuitem Partner > Partner).
       Change context from {} to {'default_name': False}
       res.partner have field 'name' with required=True
2. Try to create a new partner.
3. It raise:
       Integrity Error
       ERREUR: une valeur NULL viole la contrainte NOT NULL de la colonne
« name »

Problem is, default_get() from orm_memory class is managing default
value correctly:

server/bin/osv/orm.py
...
1615 # get the default values from the context$
1616 for key in context or {}:$
1617 if key.startswith('default_') and (key[8:] in
fields_list):$
1618 value[key[8:]] = context[key]$
1619 return value$
...

But default_get() from orm class is not:

server/bin/osv/orm.py
...
2203 for key in context or {}:$
2204 if key.startswith('default_'):$
2205 value[key[8:]] = context[key]$
2206 return value$
...

See patch attached which fixed the problem for me :)

--
Xavier ALT
AJM Technologies S.A.
22, rue Goethe / L-1637 Luxembourg