Question

我有以下型号：

class Question(models.Model):
    name = RichTextField (
        verbose_name = 'Question'
        )
    QUESTION_TYPE = (
        ('Multi', 'Multiple Choice (one correct answer)'),
        ('Check', 'Multiple Answers')
    )
    question_type = models.CharField(
        default         = "Multi",
        max_length      = 7,
        verbose_name    = "Question Type",
        choices         = QUESTION_TYPE)

    category = models.ForeignKey(
        Category, 
        help_text       = 'Category for this Question',
        null            = True
        )
    author = models.ForeignKey(
        User,
    )
    quiz = models.ForeignKey (
        Quiz,
    )

    def __unicode__(self):
        return u'%s' % (self.name)

我正在尝试使用Django表单，所以我有这样的形式：

class QuestionForm(forms.ModelForm):
    class Meta:
        model = Question
        fields = ['id','question_type','category','name','author','quiz',]
        widgets = {'id': forms.HiddenInput(),
                   'author': forms.HiddenInput(),
                   'quiz': forms.HiddenInput(),
                   'name': forms.TextInput(attrs={'class': 'form-control'}),
                   'question_type' :forms.Select(attrs={'class': 'form-control'}),
                   'category' :forms.Select(attrs={'class': 'form-control'}),
        }

除了类别模型与特定测验相关联之外，它工作正常，我只想要问题所链接的测验的类别。

class Category(models.Model):
    name = models.CharField (
        max_length = 30,
        verbose_name = "Question Categories",
    )
    quiz = models.ForeignKey (
        Quiz,
        verbose_name = 'Quiz',
    )
    def __unicode__(self):
        return u'%s' % (self.name)

我正在尝试研究如何限制通过表单呈现给用户的Category模型，但我无法弄清楚如何。非常感谢。

Answer 1

您可以尝试以下内容：

q_info = Question.objects.get(id=question_id)
Q = QuestionForm(instance=q_info)
Q.fields['category'].queryset = Category.objects.filter(condition)

Django表单：如何使用查询来显示正确的选项

1 个答案: