class Player(models.Model):
    level = models.SmallIntegerField(default=0)
    name = models.CharField(max_length=50)
    avatar = models.URLField(default='http://default-picture.com/01.png')
    job =  models.TextField(null=True)

class ProfileForm(forms.ModelForm):

class Meta:
    model = Player
    fields = ['name', 'avatar', 'job']
    widgets = {
        'name': forms.TextInput(),
        'avatar': forms.TextInput(),
        'job': forms.Textarea(),
    }

def game(request, id):
    user = get_object_or_404(Player, id=id)
    if request.method == 'POST':
        form = ProfileForm(request.POST, instance=user)
        if form.is_valid():
            form.save()
            return HttpResponse('Success')
    else:
        form = ProfileForm(instance=user)
    return render(request, "page/template.html",
            {'form': form})

{{ form }}