我一直试图解决这个问题几天,变得非常绝望。请参阅已注释掉的代码片段,了解我尝试但未奏效的一些内容。
问题:如何将category
的{{1}}字段中的值仅限制为属于当前登录用户的字段?
views.py
IngredientForm
models.py:
@login_required
def apphome(request):
IngrFormSet = modelformset_factory(Ingredient, extra=1, fields=('name', 'category'))
# Attempt #1 (not working; error: 'IngredientFormFormSet' object has no attribute 'fields')
# ingrformset = IngrFormSet(prefix='ingr', queryset=Ingredient.objects.none())
# ingrformset.fields['category'].queryset = Category.objects.filter(user=request.user)
# Attempt #2 (doesn't work)
# ingrformset = IngrFormSet(prefix='ingr', queryset=Ingredient.objects.filter(category__user_id = request.user.id))
forms.py:
class Category(models.Model):
name = models.CharField(max_length=30, unique=True)
user = models.ForeignKey(User, null=True, blank=True)
class Ingredient(models.Model):
name = models.CharField(max_length=30, unique=True)
user = models.ForeignKey(User, null=True, blank=True)
category = models.ForeignKey(Category, null=True, blank=True)
counter = models.IntegerField(default=0)
更新:我已经取得了一些进展,但解决方案目前是硬编码的,并不是真正可用的:
我发现我可以通过表单类控制class IngredientForm(ModelForm):
class Meta:
model = Ingredient
fields = ('name', 'category')
表单字段,然后在视图中传递表单,如下所示:
category
以上产生了我需要的结果,但显然#forms.py
class IngredientForm(ModelForm):
category = forms.ModelChoiceField(queryset = Category.objects.filter(user_id = 1))
class Meta:
model = Ingredient
fields = ('name', 'category')
#views.py
IngrFormSet = modelformset_factory(Ingredient, form = IngredientForm, extra=1, fields=('name', 'category'))
是硬编码的。我需要它是动态的(即当前用户)。我尝试了一些解决方案来访问forms.py中的request.user,但那些没有用。
任何想法如何前进?
答案 0 :(得分:2)
您不需要任何形式的自定义表单。您可以将category
字段的查询集更改为:
IngrFormSet = modelformset_factory(Ingredient, extra=1, fields=('name', 'category'))
IngrFormSet.form.base_fields['category'].queryset = Category.objects.filter(user__id=request.user.id)
答案 1 :(得分:0)
Category.objects.filter(user=request.user)
返回表单中初始值的列表对象,这没什么意义。
尝试改为
Category.objects.get(user=request.user)
或
Category.objects.filter(user=request.user)[0]