如何在调用is_valid()方法后更改表单字段值?
我在使用form.is_valid验证数据后尝试更改字段u_id(这是必需的).我可以改变数据,甚至在HttpResponse中显示它,但我不能把它写入我的Postgresql DB.有任何想法吗?
class ProductForm(forms.ModelForm):
class Meta:
model = Product
class Product(models.Model):
p_name = models.CharField(max_length=30)
u_id = models.CharField(max_length=80)
def uploadImage(request):
if request.method == 'POST':
form1 = ProductForm(request.POST, prefix="product")
if form.is_valid() and form1.is_valid():
form1.cleaned_data['uid']='12134324231'
form1.save()
return HttpResponse(form1.cleaned_data['p_name'])
return render_to_response('upload.html', {'form': form, 'form1': form1}, RequestContext(request))
最佳答案
Save the model form with commit = False,然后在保存到数据库之前修改实例.
if form.is_valid() and form1.is_valid():
instance = form1.save(commit=False)
instance.uid = '12134324231'
instance.save()
如果form1具有任意多对多关系,则必须调用save_m2m方法来保存多对多表单数据.有关详细信息,请参阅文档.