i put this function in "Match" class :
def points(self):
if self.score_local > self.score_visitor:
return (self.club_local.won)+1 and (self.club_visitor.lost)+1
elif self.score_local < self.score_visitor:
return (self.club_local.lost)+1 and (self.club_visitor.won)+1
else:
return (self.club_local.draw)+1 and (self.club_visitor.draw)+1
and i want it to update fields and 'CalcPoints' function in "Club" class
class Club(models.Model):
...
def CalcPoints(self):
return self.won*3 + self.draw
but until now it does not update objects (( how can i use post_save here ))
On Saturday, April 20, 2019 at 9:09:01 AM UTC+2, Derek wrote:
>
> That should just require a basic if/then logic test; "get" the correct
> Club object, update the win/loss field and save the Club. Repeat for both
> Clubs.
>
> On Thursday, 18 April 2019 14:09:41 UTC+2, omar ahmed wrote:
>>
>> thank you for response , derek
>> but how can i increment 'win' 'lost' or 'draw' Club fields by 'winner'
>> Match field
>>
>> On Wednesday, April 17, 2019 at 3:26:22 PM UTC+2, Derek wrote:
>>>
>>> 1. Add a "winner" field to your Match
>>> 2. Implement a post_save signal for the Match model that updates the
>>> "won" or "lost" fields for each Club in the match (simple if/then logic
>>> based on winner).
>>>
>>> PS I think the default values for "won" and "lost" for a Club should be
>>> "0" and not "1".
>>>
>>> On Tuesday, 16 April 2019 20:19:34 UTC+2, omar ahmed wrote:
>>>>
>>>> hello ... i have two models "Club" class and "Match" class and it has
>>>> foreign key to Club
>>>> now i want to increment "won" field (or draw or lost) in "Club" class
>>>> by "score_local" and "score_visitor" in "Match" class ..
>>>> how can i do this
>>>> class Club(models.Model):
>>>> name = models.CharField(max_length=100)
>>>> won = models.IntegerField(default=1)
>>>> draw = models.IntegerField(default=1)
>>>> lost = models.IntegerField()
>>>> goal_for = models.IntegerField()
>>>> goal_against = models.IntegerField()
>>>>
>>>>
>>>> class Match(models.Model):
>>>> play_date = models.DateTimeField('play date')
>>>> club_visitor = models.ForeignKey(Club, on_delete=models.CASCADE,
>>>> related_name='match_club_visitor')
>>>> club_local = models.ForeignKey(Club, on_delete=models.CASCADE,
>>>> related_name='match_club_local')
>>>> score_visitor = models.IntegerField()
>>>> score_local = models.IntegerField()
>>>>
>>>
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