I am trying to save the base64 encoded image in the django rest framework. First of all, we make a code to insert the base64 encoded image into the imagefield and test it, and the following error appears.
binascii.Error: Incorrect padding
What I don't understand is that I've used the same code before and there was no such error. Can you help me? Here is my code.
serializers.py
from rest_framework import serializers
from .models import post, comment
class Base64ImageField (serializers.ImageField) :
def to_internal_value (self, data) :
from django.core.files.base import ContentFile
import base64
import six
import uuid
if isinstance(data, six.string_types):
if 'data:' in data and ';base64,' in data :
header, data = data.split(';base64,')
try :
decoded_file = base64.b64decode(data)
except TypeError :
self.fail('invalid_image')
file_name = str(uuid.uuid4())[:12]
file_extension = self.get_file_extension(file_name, decoded_file)
complete_file_name = "%s.%s" % (file_name, file_extension, )
data = ContentFile(decoded_file, name=complete_file_name)
return super(Base64ImageField, self).to_internal_value(data)
def get_file_extension (self, file_name, decoded_file) :
import imghdr
extension = imghdr.what(file_name, decoded_file)
extension = "jpg" if extension == "jpeg" else extension
return extension
class commentSerializer (serializers.ModelSerializer) :
class Meta :
model = comment
fields = '__all__'
class postSerializer (serializers.ModelSerializer) :
author = serializers.CharField(source='author.username', read_only=True)
image1 = Base64ImageField(use_url=True)
image2 = Base64ImageField(use_url=True)
image3 = Base64ImageField(use_url=True)
image4 = Base64ImageField(use_url=True)
image5 = Base64ImageField(use_url=True)
comment = commentSerializer(many=True, read_only=True)
class Meta:
model = post
fields = ['pk', 'author', 'title', 'text', 'image1', 'image2', 'image3', 'image4', 'image5', 'tag1', 'tag2', 'tag3', 'tag4', 'tag5', 'comment']
I'm not sure this applies to your situation, depending on where you're storing your encoded data.
I had the same error, but it related to some encoded session data. I cleared out the session data (cookies, cache etc) in the browser Devtools, and it fixed my issue.
Just posting this in case it applies or helps others who come along for the same reason.
Run following command in shell
from django.contrib.sessions.models import Session
Session.objects.all().delete()
More information at https://code.djangoproject.com/ticket/31592
I had the same error. I do all things clear cache but it doesn't work. Now change the browser to Mozilla. Now it's working.
I had the same issue. I guess it was caused by me using django 4.0.1 in the beginning and later switching back to django 2.2... (Maybe your issue was not caused by this but I just want to provide some idea on where the problem might be to all the reader who has this issue and visit this page.)
Django 4.0.1 should directly save the session data in string into the database but Django 2.2 saves and reads base64 encoded data into / from the same column session_data in table django_session in DB.
The string failed in base64.b64decode() in my case is .eJxVjEEOwiAQRe_C2pABCgWX7j0DmRlAqoYmpV0Z765NutDtf-_9l4i4rTVuPS9xSuIslDj9boT8yG0H6Y7tNkue27pMJHdFHrTL65zy83K4fwcVe_3WGtkEHfLg2IMroL1VZA0BFGMJPJhRkdEucypY2CfA7C2HgRHGor14fwDNWjfC:1nERxl:5jJRHXpQH7aZrf2-C99MnTIWARd_cUag76Xa2YjW1yw, which is obviously not valid base64 string since symbols : - . . do not exist in base64 character list at all.
My full traceback info is:
Internal Server Error: /admin
Traceback (most recent call last):
File "C:\Users\Public\django2.2\lib\site-packages\django\contrib\sessions\backends\base.py", line 189, in _get_session
return self._session_cache
AttributeError: 'SessionStore' object has no attribute '_session_cache'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\Public\django2.2\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
response = get_response(request)
File "C:\Users\Public\django2.2\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Users\Public\django2.2\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\Public\django2.2\lib\site-packages\django\contrib\admin\sites.py", line 241, in wrapper
return self.admin_view(view, cacheable)(*args, **kwargs)
File "C:\Users\Public\django2.2\lib\site-packages\django\utils\decorators.py", line 142, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "C:\Users\Public\django2.2\lib\site-packages\django\views\decorators\cache.py", line 44, in _wrapped_view_func
response = view_func(request, *args, **kwargs)
File "C:\Users\Public\django2.2\lib\site-packages\django\contrib\admin\sites.py", line 212, in inner
if not self.has_permission(request):
File "C:\Users\Public\django2.2\lib\site-packages\django\contrib\admin\sites.py", line 186, in has_permission
return request.user.is_active and request.user.is_staff
File "C:\Users\Public\django2.2\lib\site-packages\django\utils\functional.py", line 256, in inner
self._setup()
File "C:\Users\Public\django2.2\lib\site-packages\django\utils\functional.py", line 392, in _setup
self._wrapped = self._setupfunc()
File "C:\Users\Public\django2.2\lib\site-packages\django\contrib\auth\middleware.py", line 24, in <lambda>
request.user = SimpleLazyObject(lambda: get_user(request))
File "C:\Users\Public\django2.2\lib\site-packages\django\contrib\auth\middleware.py", line 12, in get_user
request._cached_user = auth.get_user(request)
File "C:\Users\Public\django2.2\lib\site-packages\django\contrib\auth\__init__.py", line 182, in get_user
user_id = _get_user_session_key(request)
File "C:\Users\Public\django2.2\lib\site-packages\django\contrib\auth\__init__.py", line 59, in _get_user_session_key
return get_user_model()._meta.pk.to_python(request.session[SESSION_KEY])
File "C:\Users\Public\django2.2\lib\site-packages\django\contrib\sessions\backends\base.py", line 54, in __getitem__
return self._session[key]
File "C:\Users\Public\django2.2\lib\site-packages\django\contrib\sessions\backends\base.py", line 194, in _get_session
self._session_cache = self.load()
File "C:\Users\Public\django2.2\lib\site-packages\django\contrib\sessions\backends\db.py", line 44, in load
return self.decode(s.session_data) if s else {}
File "C:\Users\Public\django2.2\lib\site-packages\django\contrib\sessions\backends\base.py", line 100, in decode
encoded_data = base64.b64decode(session_data.encode('ascii'))
It's possible you run the server in a different Environment, Activate that environment and try to run the server again.
incase the env folder is in your current Path here's what to do
kill the server and then run
source env/bin/activate
python manage.py runserver
Related
I am a Django beginner and a SOF newbie, sorry if this question sounds a silly to some.
I am struggling with my integration tests.
In my app I have a one-to-one User/Profile relationship. I have a list view to show registered users' profile data:
class ProfileListView(views.ListView, LoginRequiredMixin):
model = Profile
template_name = 'registration/profile_list.html'
paginate_by = 8
def get_context_data(self, *, object_list=None, **kwargs):
context = super(ProfileListView, self).get_context_data()
# superuser raises DoesNotExist at /accounts/profiles/ as they are created with createsuperuser in manage.py
# hence are not assigned a profile automatically => create profile for them here
try:
context['current_profile'] = Profile.objects.get(pk=self.request.user.pk)
except ObjectDoesNotExist:
Profile.objects.create(user=self.request.user)
context['current_profile'] = Profile.objects.get(pk=self.request.user.pk)
# get all other users' profiles apart from staff and current user
regular_users = User.objects \
.filter(is_superuser=False, is_staff=False, is_active=True) \
.exclude(pk=self.request.user.pk)
context['non_staff_active_profiles'] = Profile.objects.filter(user__in=regular_users)
return context
I want to test the get_context_data() method to ensure it returns:
correct logged in user
correct queryset of non-staff profiles
My test breaks as soon as I try something like:
response = self.client.get('/accounts/profiles/')
I understand I need to pass user/profile data to the client but I could not figure out how to do that. It looks like it fails because of context['current_profile'] = Profile.objects.get(pk=self.request.user.pk) and I have no idea why.
The whole 'test' is below:
def test_view_get_context_data__should_return_correct_context(self):
new_user = User.objects.create_user(**self.VALID_USER_DATA_1)
# create profile
new_profile = Profile.objects.create(user=new_user)
# test profile
self.assertEqual(new_profile.user_id, new_user.pk)
response = self.client.get('/accounts/profiles/')
It fails with:
/home/kk/Documents/Github/Phonotheque/venv/bin/python /snap/pycharm-professional/280/plugins/python/helpers/pycharm/django_test_manage.py test Phonotheque.accounts_app.tests.views.test_ProfileListView.ProfilesListViewTests.test_view_get_context_data__should_return_correct_context /home/kk/Documents/Github/Phonotheque
Testing started at 15:54 ...
Found 1 test(s).
Creating test database for alias 'default'...
System check identified no issues (0 silenced).
/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/views/generic/list.py:91: UnorderedObjectListWarning: Pagination may yield inconsistent results with an unordered object_list: <class 'Phonotheque.accounts_app.models.Profile'> QuerySet.
return self.paginator_class(
Destroying test database for alias 'default'...
Error
Traceback (most recent call last):
File "/home/kk/Documents/Github/Phonotheque/Phonotheque/accounts_app/views.py", line 138, in get_context_data
context['current_profile'] = Profile.objects.get(pk=self.request.user.pk)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/db/models/manager.py", line 85, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/db/models/query.py", line 496, in get
raise self.model.DoesNotExist(
Phonotheque.accounts_app.models.Profile.DoesNotExist: Profile matching query does not exist.
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/kk/Documents/Github/Phonotheque/Phonotheque/accounts_app/tests/views/test_ProfileListView.py", line 65, in test_view_get_context_data__should_return_correct_context
response = self.client.get('/accounts/profiles/')
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/test/client.py", line 836, in get
response = super().get(path, data=data, secure=secure, **extra)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/test/client.py", line 424, in get
return self.generic(
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/test/client.py", line 541, in generic
return self.request(**r)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/test/client.py", line 810, in request
self.check_exception(response)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/test/client.py", line 663, in check_exception
raise exc_value
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/core/handlers/exception.py", line 55, in inner
response = get_response(request)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/core/handlers/base.py", line 197, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/views/generic/base.py", line 84, in view
return self.dispatch(request, *args, **kwargs)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/views/generic/base.py", line 119, in dispatch
return handler(request, *args, **kwargs)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/views/generic/list.py", line 174, in get
context = self.get_context_data()
File "/home/kk/Documents/Github/Phonotheque/Phonotheque/accounts_app/views.py", line 140, in get_context_data
Profile.objects.create(user=self.request.user)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/db/models/manager.py", line 85, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/db/models/query.py", line 512, in create
obj = self.model(**kwargs)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/db/models/base.py", line 541, in __init__
_setattr(self, field.name, rel_obj)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/db/models/fields/related_descriptors.py", line 338, in __set__
super().__set__(instance, value)
File "/home/kk/Documents/Github/Phonotheque/venv/lib/python3.8/site-packages/django/db/models/fields/related_descriptors.py", line 235, in __set__
raise ValueError(
ValueError: Cannot assign "<SimpleLazyObject: <django.contrib.auth.models.AnonymousUser object at 0x7f682f11e220>>": "Profile.user" must be a "User" instance.
Process finished with exit code 1
How do I simulate creation of multiple users/profiles, logging in of one of them and obtaining the relevant data?
Thanks a lot in advance.
It was quite a specific question and I very much doubt anyone ever will be looking at this answer but just in case:
def test_view_get_context_data__with__logged_in_user_should_return_correct_context(self):
user_data = {'username': 'BayHuy', 'password': '11111111', }
new_user = User.objects.create_user(**user_data)
new_profile = Profile.objects.create(user=new_user)
self.assertEqual(len(User.objects.all()), 1)
self.assertEqual(new_profile.user_id, new_user.pk)
self.assertEqual(len(Profile.objects.all()), 1)
self.client.login(**user_data)
response = self.client.get(reverse('profiles-list'))
self.assertEqual(
new_profile,
response.context_data['current_profile'])
self.assertEqual(
new_profile, response.context_data['current_profile'])
self.assertEqual(len(response.context_data['profile_list']), 1)
So I was trying to make an ajax call in django but this happend
Internal Server Error: /ajax/new_notification/
Traceback (most recent call last):
File "C:\Users\berna\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
response = get_response(request)
File "C:\Users\berna\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Users\berna\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\berna\Desktop\Python & Javascript\Web development\MiFamiliaEsUnDesastre\mifamiliaesundesastre\chat\views.py", line 71, in new_notification
return JsonResponse(user, safe=False)
File "C:\Users\berna\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\http\response.py", line 561, in __init__
data = json.dumps(data, cls=encoder, **json_dumps_params)
File "C:\Users\berna\AppData\Local\Programs\Python\Python38-32\lib\json\__init__.py", line 234, in dumps
return cls(
File "C:\Users\berna\AppData\Local\Programs\Python\Python38-32\lib\json\encoder.py", line 199, in encode
chunks = self.iterencode(o, _one_shot=True)
File "C:\Users\berna\AppData\Local\Programs\Python\Python38-32\lib\json\encoder.py", line 257, in iterencode
return _iterencode(o, 0)
File "C:\Users\berna\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\serializers\json.py", line 104, in default
return super().default(o)
File "C:\Users\berna\AppData\Local\Programs\Python\Python38-32\lib\json\encoder.py", line 179, in default
raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type User is not JSON serializable
HTTP GET /ajax/new_notification/ 500 [0.15, 127.0.0.1:64660]
the code that is raising this error is here, also I am new in django so maybe the solution can be ver obvious
def new_notification(request):
user = request.user
user.profile.notifications = user.profile.notifications + 1
user.save()
return JsonResponse(user, safe=False)
thank you for the help
Well, the error is rather self-explanatory:
TypeError: Object of type User is not JSON serializable
Unfortunately, user from within the request object (not necessarily 'user' model, correct me if I'm wrong here) is not JSON-serializable by default. Simplest solution would be to map only necessary fields:
return JsonResponse({ "notifications": profile.notifications }, safe=True)
But that's rather naive. Instead, maybe django serializers could do the job:
from django.core import serializers
def new_notification(request):
user = request.user
user.profile.notifications = user.profile.notifications + 1
user.save()
return JsonResponse(serializers.serialize('json', user), safe=False)
I'm using django-revproxy and Django REST Framework in my project. And I'm exposing an API where users get analytics about their chatbots, and it works as the following:
The user send requests the analytics from the Django project
Django project, checks if the user is authenticated and owns that chatbot
if True it contacts another external service.
My urls.py:
# urls.py
urlpatterns = (
url(r'^analytics/(?P<path>.*)$', api.AnalyticsFunctionsProxyView.as_view()),
)
And in my view:
# views.py
from rest_framework.authentication import TokenAuthentication
from rest_framework_jwt.authentication import JSONWebTokenAuthentication
from rest_framework.permissions import IsAuthenticated
from revproxy.views import ProxyView
from .permissions import HasChatBotPermission
...
class AnalyticsFunctionsProxyView(ProxyView):
upstream = settings.ANALYTICS_FAAS_URL
def parse_body(self, request):
if isinstance(request, rest_framework.request.Request):
return request.data
return super(AnalyticsFunctionsProxyView, self).parse_body(request)
#classmethod
def as_view(cls, *args, **kwargs):
view = super(AnalyticsFunctionsProxyView, cls).as_view(*args, **kwargs)
view = permission_classes((IsAuthenticated, HasChatBotPermission,))(view)
view = authentication_classes([TokenAuthentication, JSONWebTokenAuthentication])(view)
view = api_view(['GET', 'POST'])(view)
return view
And my HasChatBotPermission permissions
#permissions.py
class HasChatBotPermission(permissions.BasePermission):
def has_permission(self, request, view):
try:
bot_name = request.data.get('name')
user = request.user
self.message = 'Permission denied for {}'.format(name)
return ChatBot.objects.filter(user=user, project_name=project_id).exists()
except Exception:
self.message = 'Permission denied, no project_id was defined!'
return False
When the view is called it raises this exception:
Traceback (most recent call last):
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/rest_framework/request.py", line 379, in __getattribute__
return super(Request, self).__getattribute__(attr)
AttributeError: 'Request' object has no attribute 'body'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/django/core/handlers/exception.py", line 42, in inner
response = get_response(request)
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/django/core/handlers/base.py", line 187, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/django/core/handlers/base.py", line 185, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/fcmam5/anaconda3/lib/python3.6/contextlib.py", line 52, in inner
return func(*args, **kwds)
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view
return view_func(*args, **kwargs)
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/django/views/generic/base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/rest_framework/views.py", line 477, in dispatch
response = self.handle_exception(exc)
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/rest_framework/views.py", line 437, in handle_exception
self.raise_uncaught_exception(exc)
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/rest_framework/views.py", line 474, in dispatch
response = handler(request, *args, **kwargs)
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/rest_framework/decorators.py", line 52, in handler
return func(*args, **kwargs)
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/django/views/generic/base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/revproxy/views.py", line 204, in dispatch
proxy_response = self._created_proxy_response(request, path)
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/revproxy/views.py", line 139, in _created_proxy_response
request_payload = request.body
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/rest_framework/request.py", line 383, in __getattribute__
return getattr(self._request, attr)
File "/home/fcmam5/dela3a/env/lib/python3.6/site-packages/django/http/request.py", line 264, in body
raise RawPostDataException("You cannot access body after reading from request's data stream")
django.http.request.RawPostDataException: You cannot access body after reading from request's data stream
The issue is caused by this line bot_name = request.data.get('name') in my permissions.py, when I pass a string directly it passes without any problems.
My question is:
How can I access the request body without having this error? Why I'm having this error?
Is there a better solution for checking the user permission with Django revproxy.
This is my first question in Stackoverflow, sorry if my question is not clea, and for my poor English :)
You're having this error because django-revproxy attempts to read the raw request body so it can create a proxy request to the upstream server.
However, with Django's (and WSGI's, and buffering) semantics, this isn't possible once you've accessed the request body as anything but a raw stream, which you do when you request.data.get('name'). This parses the request body as JSON, HTTP multipart, whatever, depending on DRF's request negotiation configuration, and consumes the stream.
There are two ways you could get around this, as far as I see:
pass bot_name somewhere else than the body; a query string parameter, an HTTP header, part of the URL, for instance, so you don't need to access the body, or
make the backend request yourself using requests instead of reverse-proxying (which is basically the same thing, but with added magic to try and copy the request through as-is).
django version: 1.11, python version: 3.6.3
I found this stackoverflow question:
Unit Testing a Django Form with a FileField
and I like how there isn't an actual image/external file used for the unittest; however I tried these approaches:
from django.test import TestCase
from io import BytesIO
from PIL import Image
from my_app.forms import MyForm
from django.core.files.uploadedfile import InMemoryUploadedFile
class MyModelTest(TestCase):
def test_valid_form_data(self):
im_io = BytesIO() # BytesIO has to be used, StrinIO isn't working
im = Image.new(mode='RGB', size=(200, 200))
im.save(im_io, 'JPEG')
form_data = {
'some_field': 'some_data'
}
image_data = {
InMemoryUploadedFile(im_io, None, 'random.jpg', 'image/jpeg', len(im_io.getvalue()), None)
}
form = MyForm(data=form_data, files=image_data)
self.assertTrue(form.is_valid())
however, this always results in the following error message:
Traceback (most recent call last):
File "/home/my_user/projects/my_app/products/tests/test_forms.py", line 44, in test_valid_form_data
self.assertTrue(form.is_valid())
File "/home/my_user/.virtualenvs/forum/lib/python3.6/site-packages/django/forms/forms.py", line 183, in is_valid
return self.is_bound and not self.errors
File "/home/my_user/.virtualenvs/forum/lib/python3.6/site-packages/django/forms/forms.py", line 175, in errors
self.full_clean()
File "/home/my_user/.virtualenvs/forum/lib/python3.6/site-packages/django/forms/forms.py", line 384, in full_clean
self._clean_fields()
File "/home/my_user/.virtualenvs/forum/lib/python3.6/site-packages/django/forms/forms.py", line 396, in _clean_fields
value = field.widget.value_from_datadict(self.data, self.files, self.add_prefix(name))
File "/home/my_user/.virtualenvs/forum/lib/python3.6/site-packages/django/forms/widgets.py", line 423, in value_from_datadict
upload = super(ClearableFileInput, self).value_from_datadict(data, files, name)
File "/home/my_user/.virtualenvs/forum/lib/python3.6/site-packages/django/forms/widgets.py", line 367, in value_from_datadict
return files.get(name)
AttributeError: 'set' object has no attribute 'get'
Why? I understand that .get() is a dictionary method, but I fail to see where it created a set.
image_data should be dict, without providing key {value} will create set object. You need to define it like this {key: value}. Fix to this:
image_data = {
'image_field': InMemoryUploadedFile(im_io, None, 'random.jpg', 'image/jpeg', len(im_io.getvalue()), None)
}
Without External File Code
from django.core.files.uploadedfile import SimpleUploadedFile
testfile = (
b'\x47\x49\x46\x38\x39\x61\x01\x00\x01\x00\x00\x00\x00\x21\xf9\x04'
b'\x01\x0a\x00\x01\x00\x2c\x00\x00\x00\x00\x01\x00\x01\x00\x00\x02'
b'\x02\x4c\x01\x00\x3b')
avatar = SimpleUploadedFile('small.gif', testfile, content_type='image/gif')
Per one of the comments: I did change my code to:
providers = Provider.objects.all()
context = { 'providers':providers}
I know it didn't make a difference but figured I would try it anyway cause stranger things have happened. I am worried the error is within the module itself running on my version of django here.
I did see the other answers on this, and it confused me because I am just using what was documented here:
https://spapas.github.io/2015/11/27/pdf-in-django/#django-integration
for getting the django_xhtml2pdf stuff to work. My view is as such:
def providers_plain_old_view(request):
resp = HttpResponse(content_type='application/pdf')
context = {
'providers': Provider.objects.all()
}
result = generate_pdf('ipaswdb/provider/providers_plain_old_view.html', file_object=resp, context=context)
return result
Which I know now is bad in django 1.11.14 I am using, but no idea how to fix the error:
Traceback (most recent call last):
File "D:\Python27\lib\site-packages\django\core\handlers\exception.py", line 41, in inner
response = get_response(request)
File "D:\Python27\lib\site-packages\django\core\handlers\base.py", line 249, in _legacy_get_response
response = self._get_response(request)
File "D:\Python27\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response
response = self.process_exception_by_middleware(e, request)
File "D:\Python27\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "D:\Programming\web\ipa_django\mysite\ipaswdb\views.py", line 312, in providers_plain_old_view
result = generate_pdf('ipaswdb/provider/providers_plain_old_view.html', file_object=resp, context=context)
File "D:\Python27\lib\site-packages\django_xhtml2pdf\utils.py", line 62, in generate_pdf
generate_pdf_template_object(tmpl, file_object, context)
File "D:\Python27\lib\site-packages\django_xhtml2pdf\utils.py", line 39, in generate_pdf_template_object
html = template_object.render(Context(context))
File "D:\Python27\lib\site-packages\django\template\backends\django.py", line 64, in render
context = make_context(context, request, autoescape=self.backend.engine.autoescape)
File "D:\Python27\lib\site-packages\django\template\context.py", line 287, in make_context
raise TypeError('context must be a dict rather than %s.' % context.__class__.__name__)
TypeError: context must be a dict rather than Context.
"GET /ipaswdb/provider_roster/ HTTP/1.1" 500 86485
I mean it wants me to call the generate_pdf function a different way in the latest django version?
The main issue lies in the line
File "D:\Python27\lib\site-packages\django_xhtml2pdf\utils.py", line 39, in generate_pdf_template_object
html = template_object.render(Context(context))
in the error output. This is an issue the django-xhtml2pdf package not being up to date for 1.11. The call to render has changed from
html = template_object.render(Context(context))
to
html = template_object.render(context)
according to the upgrading to 1.11 notes https://docs.djangoproject.com/en/1.11/ref/templates/upgrading/
django.template.loader section.
You can either wait for them to fix it, by submitting a bug report or implement the functionality the package provides in your views.py