djangocontent-typedjango-contenttypes
contenttypes.models.DoesNotExist: ContentType matchingquery does not exist how to improve
by another project this comment system is worked! but there nothing, how to fix this issue?
full traceback
> Traceback (most recent call last): File
> "C:\Users\P.A.N.D.E.M.I.C\Desktop\td11\lib\site-packages\django\core\handlers\exception.py",
> line 41, in inner
> response = get_response(request) File "C:\Users\P.A.N.D.E.M.I.C\Desktop\td11\lib\site-packages\django\core\handlers\base.py",
> line 187, in _get_response
> response = self.process_exception_by_middleware(e, request) File "C:\Users\P.A.N.D.E.M.I.C\Desktop\td11\lib\site-packages\django\core\handlers\base.py",
> line 185, in _get_response
> response = wrapped_callback(request, *callback_args, **callback_kwargs) File "C:\Users\P.A.N.D.E.M.I.C\Desktop\td11\newstudio\serials\views.py",
> line 78, in post_of_serie
> content_type = ContentType.objects.get(model=c_type) File
> "C:\Users\P.A.N.D.E.M.I.C\Desktop\td11\lib\site-packages\django\db\models\manager.py",
> line 85, in manager_method
> return getattr(self.get_queryset(), name)(*args, **kwargs) File "C:\Users\P.A.N.D.E.M.I.C\Desktop\td11\lib\site-packages\django\db\models\query.py",
> line 380, in get
> self.model._meta.object_name django.contrib.contenttypes.models.DoesNotExist: ContentType matching
> query does not exist.
this is views.py
initial_data = {
"content_type": serie.get_content_type,
"object_id": serie.id
}
if request.method == 'POST':
form = CommentForm(request.POST or None, initial=initial_data)
if form.is_valid():
c_type = form.cleaned_data.get("content_type")
content_type = ContentType.objects.get(model=c_type)
obj_id = form.cleaned_data.get('object_id')
content_data = form.cleaned_data.get("content")
parent_obj = None
try:
parent_id = int(request.POST.get("parent_id"))
except:
parent_id = None
if parent_id:
parent_qs = Comment.objects.filter(id=parent_id)
if parent_qs.exists() and parent_qs.count() == 1 :
parent_obj = parent_qs.first()
new_comment, created = Comment.objects.get_or_create(
user = request.user,
content_type = content_type,
object_id = obj_id,
content = content_data,
parent = parent_obj
)
return HttpResponseRedirect(new_comment.content_object.get_absolute_url())
form = CommentForm(initial=initial_data)
comments = Comment.objects.filter_by_instance(serie)
context = { "serie":serie,
"full_path":full_path,
"title":title,
"poster":poster,
"comments": comments,
"comment_form": form,
}
return render(request, 'series.html', context)
in html template contenttype is displayed the model which i use in my views
but it doesn't work. but averything displayed correctly
the second img
models
class Series(models.Model):
id = models.AutoField(primary_key=True)
rus_name = models.CharField(max_length=60)
eng_name = models.CharField(max_length=60)
slug = models.SlugField(unique=False)
serial_of_this_series = models.ForeignKey(Serial, on_delete=models.CASCADE, default=True)
season_of_this_series = models.ForeignKey(Season, on_delete=models.CASCADE, default=True)
number_of_series = models.IntegerField(default=0)
description = models.TextField(max_length=700, blank=True, default=None)
size_of_torent_file = models.CharField(max_length=60, default=None)
link_for_dowloand_serie_in_quality_360p = models.CharField(max_length=60, default=None)
link_for_dowloand_serie_in_quality_720p = models.CharField(max_length=60, default=None)
link_for_dowloand_serie_in_quality_1080p = models.CharField(max_length=60, default=None)
rating = models.FloatField(default=0, blank=True)
is_active = models.BooleanField(default=True)
timestamp_rus = models.DateField(auto_now_add=True, auto_now=False)
updated = models.DateTimeField(auto_now_add=False, auto_now=True)
timestamp_eng = models.CharField(max_length=60)
time_of_series = models.DecimalField(max_digits=10, decimal_places=2, default=42)
new_or_old = models.BooleanField(default=True)
def save(self, *args, **kwargs):
name_of_serial = self.serial_of_this_series.rus_name_of_seriall
number_of_season = self.season_of_this_series.number_of_season
number_of_series = self.number_of_series
if self.new_or_old:
#notification_for_new_series_task.delay(name_of_serial, number_of_season, number_of_series)
season_module = Season.objects.get(slug=self.season_of_this_series.slug, serial_for_this_season=self.serial_of_this_series)
season_module.number_of_series_released += 1
season_module.save()
self.new_or_old = False
return super(Series, self).save(*args, **kwargs)
def get_absolute_url(self):
return reverse('series:post_of_serie', kwargs=
{'serial_slug': self.serial_of_this_series.slug,
'season_slug': self.season_of_this_series.slug,
'series_slug': self.slug})
def __str__(self):
return "%s | %s" % (self.rus_name, self.number_of_series)
@property
def comments(self):
instance = self
qs = Comment.objects.filter_by_instance(instance)
return qs
@property
def get_content_type(self):
instance = self
content_type = ContentType.objects.get_for_model(instance.__class__)
return content_type
class Meta:
ordering = ["-timestamp_rus"]
verbose_name = 'Series'
verbose_name_plural = 'Series'
Solution
I would expect the content_type value to be lowercase i.e. series instead of Series.
Your Serie.get_content_type property returns the content type instance. You should use the model field.
initial_data = {
"content_type": serie.get_content_type.model,
"object_id": serie.id,
}
It's not clear why you need to include the content_type and object_id in the form at all. You already have serie in the view, so you should be able to remove those fields from the form then update the view as follows:
if form.is_valid():
content_type = serie.get_content_type
obj_id = serie.id
content_data = form.cleaned_data.get("content")
...
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