我正在为我的一个项目使用 django-bookmarks,最近更新到 Django 1.2.1。我注意到表单提交自更新以来没有验证。请注意,我确实确认这适用于 Django v1.1.1,因此新版本和表单字段验证是不同的。
这是 forms.py 构建的模型:
class BookmarkInstance(models.Model):
bookmark = models.ForeignKey(Bookmark, related_name="saved_instances", verbose_name=_('bookmark'))
user = models.ForeignKey(User, related_name="saved_bookmarks", verbose_name=_('user'))
saved = models.DateTimeField(_('saved'), default=datetime.now)
description = models.CharField(_('description'), max_length=100)
note = models.TextField(_('note'), blank=True)
处理 POST 的视图:
if request.method == "POST":
bookmark_form = BookmarkInstanceForm(request.user, request.POST)
if bookmark_form.is_valid():
bookmark_instance = bookmark_form.save(commit=False)
bookmark_instance.user = request.user
bookmark_instance.save()
bookmark = bookmark_instance.bookmark
...
和forms.py:
class BookmarkInstanceForm(forms.ModelForm):
url = forms.URLField(label = "URL", verify_exists=True, widget=forms.TextInput(attrs={"size": 40}))
description = forms.CharField(max_length=100, widget=forms.TextInput(attrs={"size": 40}))
redirect = forms.BooleanField(label="Redirect", required=False)
tags = TagField(label="Tags", required=False)
def __init__(self, user=None, *args, **kwargs):
self.user = user
super(BookmarkInstanceForm, self).__init__(*args, **kwargs)
# hack to order fields
self.fields.keyOrder = ['url', 'description', 'note', 'redirect']
def clean(self):
if 'url' not in self.cleaned_data:
return
if BookmarkInstance.objects.filter(bookmark__url=self.cleaned_data['url'], user=self.user).count() > 0:
raise forms.ValidationError(_("You have already bookmarked this link."))
return self.cleaned_data
...
def save(self, commit=True):
self.instance.url = self.cleaned_data['url']
return super(BookmarkInstanceForm, self).save(commit)
class Meta:
model = BookmarkInstance
#fields = ('url', 'description', 'note', 'redirect')
使用 pdb,我看到 BookmarkInstance 的外键值为空,因此 is_valid() 将返回 false,因为所有字段都未验证。
是否需要修改init函数才能显式传入外键参数?不应该像在 v1.1.1 中那样自动传入外键值吗?