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我試圖從查詢有一個Django的形式,但我一直在這樣做了錯誤的方式。查了幾個例子,但我做的有點不同。這裏是我的代碼,預填充Django表單
樂形式
class ItemForm(ModelForm):
class Meta:
model = Item
exclude = ('deleted')
和視圖
def index(request):
user = User
try:
last_modified_list = ShoppingList.objects.filter(deleted='0').filter(owner=user).latest('date_modified')
items = Item.objects.filter(shopping_list=last_modified_list).filter(deleted='0')
except ObjectDoesNotExist:
items = Item.objects.filter(deleted='0')
last_used_currency = ExtendedUser.objects.filter(owner=user)
#currency = forms.CharField(initial=last_used_currency.last_currency)
try:
last_used_shoppinglist = ShoppingList.objects.filter(deleted='0').filter(owner=user).latest('date_modified')
except ObjectDoesNotExist:
last_used_shoppinglist = datetime.datetime.now()
item_form = ItemForm (request.POST or None)
item_form.fields["shopping_list"]=last_used_shoppinglist
if item_form.is_valid():
name = item_form.cleaned_data['name']
bought = item_form.cleaned_data['bought']
currency = item_form.cleaned_data['currency']
price = item_form.cleaned_data['price']
date_added = item_form.cleaned_data['date_added']
date_modified = item_form.cleaned_data['date_modified']
date_bought = item_form.cleaned_data['date_bought']
shopping_list = item_form.cleaned_data['shopping_list']
quantity = item_form.cleaned_data['quantity']
deleted = item_form.cleaned_data['deleted']
return render_to_response ('base.html',{'user':user,'items':items,'item_form':item_form}, context_instance=RequestContext(request))
的shopping_list
線真的是導致許多錯誤的一部分。
不,不是創建模型的實例。我試圖讓shopping_list從查詢購物清單模型中獲取初始值,並且在找不到任何值時,使用今天的日期預填充該字段。 – 2012-07-21 11:33:48
問題是你將'last_used_shoppinglist'分配給表單字段,這不是你想要的。嘗試item_form.fields [「shopping_list」]。initial = last_used_shoppinglist – Tom 2012-07-23 14:23:53