无法使用 modelForm 保存复选框和单选按钮的数据

Question

model.py

    class FormData(models.Model):
        email = models.EmailField()
        full_name = models.CharField(max_length=120)
        text_area = models.CharField(max_length=250)
        radio_buttons = models.CharField(max_length=25)
        check_boxes = models.CharField(max_length=10)
        def __unicode__(self):
            return self.email

forms.py

    class MyModelForm(forms.ModelForm):
        class Meta:
            model = FormData
            fields = ['text_area','email','full_name']
            widgets = {
                'text_area': Textarea(attrs={'cols': 50, 'rows': 10}),
            }
        TYPE_CHOICES = [('s', 'small'),('m', 'medium'),('b', 'big')]
        check_boxes = forms.MultipleChoiceField(choices=TYPE_CHOICES, widget=forms.CheckboxSelectMultiple())

        CHOICES = [(1, 'One'),(2, 'Two'),(3, 'Three'),(4, 'Four')]
        radio_buttons = forms.ChoiceField(choices=CHOICES, widget=forms.RadioSelect())

views.py

    def home(request):
        title = 'Welcome'
        form = MyModelForm(request.POST)
        context = {"title":title,"form":form}

        if form.is_valid():
            instance = form.save(commit=False) 
            instance.save()
            context = {"title":"Thank You!"}

        return render(request,"home.html",context)

home.html

    <h1>{{title}}</h1>
    <form method='POST' action=''>{% csrf_token %}
        {{form.as_p}}
        <input type="submit" value="Submit">
    </form>

问题是我似乎无法理解如何从 checkboxes 和 radiobuttons 中保存数据。表单提交成功，但当我查看数据库时，check_boxes 字段为空，radio_buttons 字段显示值“False”，而我需要在CHOICES 列表。

Answer 1

您在表单中添加了两个您未在 fields 中提及的额外字段。像这样改变你的形式。

class MyModelForm(forms.ModelForm):
    class Meta:
        model = FormData
        fields = ['text_area','email','full_name', 'check_boxes', 'radio_buttons']
        widgets = {
            'text_area': Textarea(attrs={'cols': 50, 'rows': 10}),
        }
    TYPE_CHOICES = [('s', 'small'),('m', 'medium'),('b', 'big')]
    check_boxes = forms.MultipleChoiceField(choices=TYPE_CHOICES, widget=forms.CheckboxSelectMultiple())

    CHOICES = [(1, 'One'),(2, 'Two'),(3, 'Three'),(4, 'Four')]
    radio_buttons = forms.ChoiceField(choices=CHOICES, widget=forms.RadioSelect())

无法使用 modelForm 保存复选框和单选按钮的数据

Unable to save the data from checkboxes and radiobuttons using modelForm

python

django

forms

modelform