I've got a model with a few foreign keys. Normally this isn't a
problem except in one case when I create a Profile ChangeManipulator,
it results on the following query repeated once per GameOfInterest
associated with the given Profile:
'time': '0.046', 'sql': 'SELECT
"game_room_app_game"."id","game_room_app_game"."name","game_room_app_game"."genre_id"
FROM "game_room_app_game" ORDER BY "game_room_app_game"."name" ASC'
Obviously, the performance deteriorates rapidly as the number of
GamesOfInterest added to a Profile increases. Is there any way to
avoid this?
Here is the relevant portion of my model file (with some fields
removed for brevity). Essentially, I have a GameOfInterest that
associates a Profile to a Game, and a Profile can have any number of
these:
class Game( models.Model ):
class Admin:
pass
class Meta:
ordering = ( 'name', )
def __str__( self ):
return self.name
name = models.CharField( maxlength=60, unique=True )
genre = models.ForeignKey( GameGenre )
class Profile( models.Model ):
class Admin:
pass
# waiting on bug #2076
#ordering = ( 'user__username' )
def __str__( self ):
return self.user.username
user = models.ForeignKey( User, unique=True,
edit_inline=models.STACKED,
max_num_in_admin=1, num_in_admin=1,
core=True )
)
class GameOfInterest( models.Model ):
class Admin:
pass
def __str__( self ):
return self.game.name
game = models.ForeignKey( Game, blank=False )
profile = models.ForeignKey( Profile, edit_inline=models.TABULAR,
num_in_admin=1, core=True, blank=False )
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