Question

我有

models.py

......
class CatalogGroup(models.Model):
    name = models.CharField(max_length=100, blank=True, null=True)
    def __unicode__(self):
        return self.name

class Place(models.Model):
    name = models.CharField(max_length=100, blank=True, null=True)
    def __unicode__(self):
        return self.name


class Scale(models.Model):
    name = models.CharField(max_length=100, blank=True, null=True)
    def __unicode__(self):
        return self.name



class ProductsTbl(models.Model):
    model_number = models.CharField(max_length=255, blank=True, unique=True,error_messages={'unique':"This model number has already been registered."})
    name = models.CharField(max_length=255, blank=True, null=True)
    material = models.CharField(max_length=255,blank=True, null=True)
    color = models.CharField(max_length=255, blank=True, null=True)
    feature = models.TextField(blank=True, null=True)
    created = models.DateTimeField(editable=False)
    modified = models.DateTimeField(auto_now=True)
    release = models.DateTimeField(blank=True, null=True)
    suggest = models.TextField(blank=True, null=True)
    description = models.TextField(blank=True, null=True)
    cataloggroup = models.ManyToManyField(CatalogGroup)
    place = models.ManyToManyField(Place)
    scale = models.ManyToManyField(Scale)
    slug = models.SlugField(unique=True)
    user = models.ForeignKey(User, blank=True, null=True)
    useredit = models.CharField(max_length=32, blank=True, null=True)
    image = models.ImageField(upload_to=get_imagep_Product, blank=True)

    def __unicode__(self):
        return self.name
    def save(self, *args, **kwargs):
        ''' On save, update timestamps '''

        if not self.id:
            self.created = timezone.now()

        return super(ProductsTbl, self).save(*args, **kwargs)
.....

如果有任何用户修改了表单中的数据，我需要更新数据库，所以我有：

views.py

.......
@login_required
def edit_thing(request, slug):
# grab the object...
    thing = ProductsTbl.objects.get(slug=slug)
    if thing.user != request.user:
        raise Http404
# set the form we're using...
    form_class = ProductsTblForm
    if request.method == 'POST':
# grab the data from the submitted form
        form = form_class(data=request.POST,files=request.FILES,instance=thing)

        if form.is_valid():
            form = form.save(commit=False)
            form.useredit = request.user.username


            form.save()
            return redirect('thing_detail', slug=thing.slug)
# otherwise just create the form
    else:
        form = form_class(instance=thing)
# and render the template
    return render(request, 'things/edit_thing.html', {
        'thing': thing,
        'form': form,
    })
.........

然而，在我提交数据后，它只有部分数据可以保存在数据库中，下面这三个数据无法保存

cataloggroup = models.ManyToManyField(CatalogGroup)
place = models.ManyToManyField(Place)
scale = models.ManyToManyField(Scale)

我不知道为什么这三个数据无法保存？

如果我删除了

form = form.save（commit = False）

来自

views.py

，

form.useredit = request.user.username

不起作用，但可以将这三个数据保存到数据库，但是我必须让useredit更新到修改数据的用户。

Answer 1

我弄明白该怎么做,,,我在上面添加了一个“form.save（）”，它可以保存所有数据

views.py

....
if form.is_valid():

    form.save()
    form = form.save(commit=False)
    form.useredit = request.user.username

    form.save()
    return redirect('thing_detail', slug=thing.slug)
....

只能将部分数据保存到数据库中

1 个答案: