Question

我有以下（剥离）代码：

# games/models.py
side_choices = [('A', 'Attack'), ('D', 'Defense')]
position_choices = [(0, 'Commander'), (1, 'Knight'), (2, 'Mage'), (3, 'Healer')]
class Game(models.Model):
    users = models.ManyToManyField(User, through='GameParticipation)) // User is Django's user


class GameParticipation(models.Model):
    user = models.ForeignKey(User)
    game = models.ForeignKey(Game)
    side = models.CharField(choices=side_choices)
    position = models.PositiveSmallIntegerField(choices=position_choices)

# games/forms.py
class JoinForm(forms.Form):
    side = forms.ChoiceField(choices=side_choices)
    position = forms.ChoiceField(choices=position_choices)

我不知道如何编写代码来获取游戏中的可用空间列表，并将其传递给JoinForm，以便用户看不到占用空间的选项。

Answer 1

这里需要更多信息，但假设您只知道在数据库中使用的空格，可能会找出哪些是免费的。

#assuming you know the game and user
game=1
user=2

#get all used spaces
usedSpaces=GameParticipation.objects.filter(game__get=game).filter(user__get=user)
#figure out from size of board, which spaces are empty

或者如果您知道空格具有空值

emptySpaces=GameParticipation.objects.filter(game__get=game).filter(user__get=user).filter(position__exact=None)

如何使用Django管理一组用户的空闲空间？

1 个答案: