简单的 Django 表单/模型保存问题

Question

我想在保存 ModelForm 时将 BooleanField inuse 设置为 True（我正在使用管理区域之外的表单），但我不确定该怎么做。

型号：

class Location(models.Model):
    place = models.CharField(max_length=100)
    inuse = models.BooleanField()

class Booking(models.Model):
    name = models.CharField(max_length=100, verbose_name="Your name*:")
    place = models.ManyToManyField(Location, blank=True, null=True)

表格：

class BookingForm(ModelForm):

    class Meta:
        model = Booking

        def save(self, commit=True):
            booking = super(BookingForm, self).save(commit=False)
            if commit:
                booking.save()
                self.save_m2m()
                for location in booking.place.all():
                    location.inuse = True
                    print location #nothing prints
                    location.save()

查看：

def booking(request):
    form = BookingForm()
    if request.method == 'POST':
        form = BookingForm(request.POST)
        if form.is_valid():
            form.save()
        else:
            form = form

        return render_to_response('bookingform.html', {
                'form': form,
            })

已更新至最新版本（请参阅 Manoj Govindan's answer）。它仍然没有在提交/保存时将 inuse 更新为 True。

Answer 1

class BookingForm(ModelForm):

    class Meta:
        model = Booking

    def save(self, commit=True):
        booking = super(BookingForm, self).save(commit=False)
        booking.inuse = True
        if commit:
            booking.save()

Answer 2

这是我的尝试：

class BookingForm(ModelForm):
    class Meta:
        model = Booking

    def save(self, commit=True):
        booking = super(BookingForm, self).save(commit=False)
        if commit:
            booking.save()  
            self.save_m2m()
            for location in booking.place.all():
                location.inuse = True
                location.save()

更新

我用过的全部代码：

# models.py
class Location(models.Model):
    place = models.CharField(max_length=100)
    inuse = models.BooleanField()

class Booking(models.Model):
    name = models.CharField(max_length=100, verbose_name="Your name*:")
    place = models.ManyToManyField(Location, blank=True, null=True)

# forms.py
class BookingForm(ModelForm):
    class Meta:
        model = Booking

    def save(self, commit=True):
        booking = super(BookingForm, self).save(commit=False)
        if commit:
            booking.save()
            self.save_m2m()
            for location in booking.place.all():
                location.inuse = True
                location.save()

In [1]: from test_app.forms import BookingForm
In [2]: from test_app.models import Location

# I had already saved some `Location` instances.

In [3]: data = dict(name = 'MyCity', place = [p.id for p in Location.objects.all()])
In [4]: f = BookingForm(data)
In [5]: f.save()
In [6]: for each in Location.objects.all():
   ...:     print each.place, each.inuse
   ...:      
PlaceA True 
PlaceB True 
PlaceC True