कोई फॉर्म सहेजते समय मुझे यह त्रुटि मिल रही है: "" फ़ील्ड के लिए मूल्य होना चाहिए " सर्वेक्षण से पहले "इस से कई रिश्तों का उपयोग किया जा सकता है।Django त्रुटि: फ़ील्ड के लिए मूल्य होना चाहिए "..." इससे पहले कि कई से अधिक रिलेशनशिप का उपयोग किया जा सके
Models.py:
class SurveyResult(models.Model):
stay = models.OneToOneField(Stay, related_name='survey')
created = models.DateTimeField(default=datetime.now)
vote = models.BooleanField(default=False)
vote_service = models.BooleanField(default=False)
comment = models.TextField(blank=True, null=True)
def getThreads(self):
return SurveyThread.objects.filter(parent_survey = self)
threads = property(getThreads)
def __unicode__(self):
return self.vote and 'Good' or 'Bad'
class Meta:
get_latest_by = '-created'
class SurveyThread(models.Model):
survey = models.ManyToManyField(SurveyResult, related_name='parent_survey')
email = models.EmailField(max_length=200)
comment = models.TextField(blank=True, null=True)
views.py:
survey_list = SurveyResult.objects.filter(stay__guest__user=request.user) \
.select_related('stay', 'stay__guest')
forms = {}
for survey in survey_list:
forms[survey] = SurveyThreadForm(data=request.POST or None, survey=survey)
if forms[survey].is_valid():
instance = forms[survey].save()
return redirect('.')
forms.py
class SurveyThreadForm(forms.Form):
comment = forms.CharField(required=False, widget=forms.Textarea)
def __init__(self, *args, **kwargs):
self.survey = kwargs.pop('survey', None)
if not self.survey:
raise NotImplementedError("SurveyResult object is required at this moment")
super(SurveyThreadForm, self).__init__(*args, **kwargs)
self.fields['comment'].label = "Message to send to guest:"
def save(self, commit=True):
s = SurveyThread()
s.survey = self.survey
s.email = "[email protected]"
s.comment = self.cleaned_data['comment']
if commit:
s.save()
return s
त्रुटि संदेश:
ValueError at/
"<SurveyThread: SurveyThread object>" needs to have a value for field "surveythread" before this many-to-many relationship can be used.
Request Method: POST
Request URL: http://127.0.0.1:8000/
Django Version: 1.5.1
Exception Type: ValueError
Exception Value:
"<SurveyThread: SurveyThread object>" needs to have a value for field "surveythread" before this many-to-many relationship can be used.
Exception Location: /Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/site-packages/django/db/models/fields/related.py in __init__, line 586
Python Executable: /Users/tlovett1/.virtualenvs/guestretain/bin/python
Python Version: 2.7.2
Python Path:
['/Users/tlovett1/guestretain',
'/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg',
'/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/site-packages/pip-1.3.1-py2.7.egg',
'/Users/tlovett1/.virtualenvs/guestretain/lib/python27.zip',
'/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7',
'/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/plat-darwin',
'/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/plat-mac',
'/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/plat-mac/lib-scriptpackages',
'/Users/tlovett1/.virtualenvs/guestretain/Extras/lib/python',
'/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/lib-tk',
'/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/lib-old',
'/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/lib-dynload',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages',
'/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/site-packages',
'/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/site-packages/PIL']
Server time: Sun, 7 Jul 2013 10:22:55 -0500
Traceback:
Traceback Switch to copy-and-paste view
/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/site-packages/django/core/handlers/base.py in get_response
response = callback(request, *callback_args, **callback_kwargs) ...
▶ Local vars
/Users/tlovett1/guestretain/retain/apps/profiles/utils.py in _wrapped_view
return view_func(request, *args, **kwargs) ...
▶ Local vars
/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/site-packages/endless_pagination/decorators.py in decorated
return view(request, *args, **kwargs) ...
▶ Local vars
/Users/tlovett1/guestretain/retain/apps/dashboard/views.py in dashboard
instance = forms[survey].save() ...
▶ Local vars
/Users/tlovett1/guestretain/retain/apps/surveys/forms.py in save
s.survey = self.survey ...
▶ Local vars
/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/site-packages/django/db/models/fields/related.py in __set__
manager = self.__get__(instance) ...
▶ Local vars
/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/site-packages/django/db/models/fields/related.py in __get__
through=self.field.rel.through, ...
▶ Local vars
/Users/tlovett1/.virtualenvs/guestretain/lib/python2.7/site-packages/django/db/models/fields/related.py in __init__
(instance, source_field_name)) ...
▶ Local vars
मैं Django और पायथन के लिए नया हूँ। यदि आवश्यक हो तो मैं डीबग ट्रेस या माइग्रेशन फ़ाइल पोस्ट कर सकता हूं, लेकिन मुझे लगता है कि यह एक साधारण फिक्स है। जाहिर है, मुद्दा यह है कि मैं प्रत्येक सर्वेक्षण परिणाम के लिए कई सर्वेक्षण धागे को सहेजना चाहता हूं।
धन्यवाद!
वास्तव में, सटीक त्रुटि संदेश और ट्रेसबैक आपके लिए आपको जवाब देने और उत्तर देने के लिए बहुत उपयोगी होगा। –
मैंने मूल त्रुटि में पूर्ण त्रुटि संदेश और ट्रेसबैक जोड़ा। – tlovett1