I have am trying to load submitted data into a Form
instance, request.POST
has valid value but form does not.
class ArticleCreateForm(forms.Form):
title = forms.CharField(max_length=255, widget=forms.TextInput(attrs={'autocomplete': 'off'}), label='')
tagging = forms.CharField(max_length=255, required=False, widget=forms.TextInput(attrs={'autocomplete': 'off'}), label='')
towhere = forms.CharField(max_length=20, required=False) # default to unchecked, save
class Meta:
fields = ['title', 'tagging', 'towhere']
def clean_title(self):
data = self.cleaned_data['title']
if len(data) < 3:
raise ValidationError('Title is too short')
def clean_tagging(self):
data = self.cleaned_data['tagging']
if len(data) == 0 or data is None:
raise ValidationError('Please add at least one tag')
@login_required
def articleChangeView(request, pk):
try:
article = Article.objects.get(pk=pk)
if article.author != request.user:
raise PermissionDenied()
elif request.method == 'POST':
form = forms.ArticleCreateForm(request.POST)
print('--------')
print(request.POST)
print(form.cleaned_data)
<QueryDict: {'csrfmiddlewaretoken': ['gm0ODMFud35nhHlPdBr3IHVZXgtiDQV8zGPsscGWzcpylNVd0fnray7iodJvBWyb'], 'title': ['Title'], 'tagging': ['jquery']}>
{'title': None, 'tagging': None, 'towhere': ''}
I wonder why this happens, I will be so glad if you can give me a hand
CodePudding user response:
You first should call form.is_valid()
[Django-doc]:
from django.shortcuts import get_object_or_404
@login_required
def articleChangeView(request, pk):
article = get_object_or_404(Article, pk=pk, author=request.user)
if request.method == 'POST':
form = forms.ArticleCreateForm(request.POST)
if form.is_valid():
print('--------')
print(request.POST)
print(form.cleaned_data)
The clean
methods of your clean_fieldname
s should also return the cleaned value, so:
class ArticleCreateForm(forms.Form):
# …
def clean_title(self):
data = self.cleaned_data['title']
if len(data) < 3:
raise ValidationError('Title is too short')
return data
def clean_tagging(self):
data = self.cleaned_data['tagging']
if not data:
raise ValidationError('Please add at least one tag')
return data