我正在尝试集成一个名为Django-Classifieds的应用程序，但无法弄清楚如何操作某些元素。
该应用程序允许人们通过管理部分创建一个类别和子字段，这些部分将被显示并允许用户在所述类别中创建一个帖子。尽管 Django 管理员允许创建字段：
并将它们写入数据库：
我不知道如何调用这些字段并将它们显示给用户。目前只显示标题字段。我知道使用 ModelForm 将允许我访问这些元素，但我不确定如何将它与 BaseForm 合并（在应用程序中使用，如下所示）：
class AdForm(BaseForm):
def __init__(self, instance, data=None, files=None, auto_id='id_%s', prefix=None,
initial=None, error_class=ErrorList, label_suffix=':',
empty_permitted=False):
self.instance = instance
object_data = ad_to_dict(self.instance)
self.declared_fields = SortedDict()
self.base_fields = fields_for_ad(self.instance)
# if initial was provided, it should override the values from instance
if initial is not None:
object_data.update(initial)
BaseForm.__init__(self, data, files, auto_id, prefix, object_data,
error_class, label_suffix, empty_permitted)
def save(self, commit=True):
if not commit:
raise NotImplementedError("AdForm.save must commit it's changes.")
if self.errors:
raise ValueError("The ad could not be updated because the data didn't validate.")
cleaned_data = self.cleaned_data
# save fieldvalues for self.instance
fields = field_list(self.instance)
for field in fields:
if field.enable_wysiwyg:
value = unicode(stripHTML(cleaned_data[field.name]))
else:
value = unicode(cleaned_data[field.name])
# strip words in settings.FORBIDDEN_WORDS
for word in settings.FORBIDDEN_WORDS:
value = value.replace(word, '')
# title is stored directly in the ad, unlike all other editable fields
if field.name == 'title':
self.instance.title = value
self.instance.save()
else:
# check to see if field.fieldvalue_set has a value with ad=self.instance
try:
# if it does, update
fv = field.fieldvalue_set.get(ad=self.instance)
except FieldValue.DoesNotExist:
# otherwise, create a new one
fv = field.fieldvalue_set.create(ad=self.instance)
# XXX some ugly price fixing
if field.name.endswith('price'):
m = re.match('^\$?(\d{1,3},?(\d{3},?)*\d{3}(\.\d{0,2})?|\d{1,3}(\.\d{0,2})?|\.\d{1,2}?)$', value)
value = m.group(1)
value.replace(',', '')
value = '%.2f' % float(value)
fv.value = value
fv.save()
return self.instance
如何在AdForm上面显示所有创建的字段？
任何例子表示赞赏。谢谢你。