在Django中编辑表单集

Question

在我的django应用程序中，我试图理解多对多关系，并且我使用formset来存储数据，如下所示：

Views.py

def Team_Form(request):

   if request.POST:
        form = TeamForm(request.POST)
        form.player_instances = PlayerFormset(request.POST)
        if form.is_valid():
            team= Team()
            team.tname= form.cleaned_data['tname']
            team.save()

        if form.player_instances.cleaned_data is not None:
            for item in form.player_instances.cleaned_data:
                player = Player()
                player.pname= item['pname']
                player.hscore= item['hscore']
                player.age= item['age']
                player.save()
                team.player.add(player)
            team.save()

   else:
        form = TeamForm()
        return render(request, 'packsapp/employee/new.html', {'form':form})

Models.py

class Player(models.Model):
    pname = models.CharField(max_length=50)
    hscore = models.IntegerField()
    age = models.IntegerField()
    def __str__(self):
       return self.pname

class Team(models.Model):
    tname = models.CharField(max_length=100)
    player= models.ManyToManyField(Player)
    def __str__(self):
        return self.tname

Forms.py

class PlayerForm(forms.Form):
    pname = forms.CharField()
    hscore= forms.IntegerField()
    age = forms.IntegerField()

PlayerFormset= formset_factory(PlayerForm)

class TeamForm(forms.Form):
   tname= forms.CharField()
   player= PlayerFormset()

我无法理解的是，如何编辑我刚刚保存的表单集，或者更好地表达问题，即如何将保存的实例传递给表单集以对其进行编辑？

Answer 1

这里的多对多意味着一个球员可以在多个团队中，而且一个团队可以有很多球员。

要解决您的问题，您必须创建另一个视图（链接到相同的表单），该视图将显示您的表单但已经填写。在您的团队的功能pk中。

def updateTeam(request,pk):

  team = Team.objects.get(id=pk)
  form = TeamForm(instance=team)

if request.method == "POST":
    form = TeamForm(request.POST, instance=team)
    if form.is_valid():
        form.save()

context = {'form': form}
return render(request, 'accounts/order_form.html', context)

应该可以解决您的问题！

如有任何疑问，请不要犹豫