Django community: Django Q&A RSS
This page, updated regularly, aggregates Django Q&A from the Django community.
-
django logging can't set maxBytes
I Can't set maxBytes to logging files. My django version is 2.0.3, Python 3.5.2 logging 0.5.1.2 here is exception. Traceback (most recent call last): File "/home/moon/.env/envpy3/lib/python3.5/site-packages/django/utils/autoreload.py", line 225, in wrapper fn(*args, **kwargs) File "/home/moon/.env/envpy3/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 112, in inner_run autoreload.raise_last_exception() File "/home/moon/.env/envpy3/lib/python3.5/site-packages/django/utils/autoreload.py", line 248, in raise_last_exception raise _exception[1] File "/home/moon/.env/envpy3/lib/python3.5/site-packages/django/core/management/__init__.py", line 327, in execute autoreload.check_errors(django.setup)() File "/home/moon/.env/envpy3/lib/python3.5/site-packages/django/utils/autoreload.py", line 225, in wrapper fn(*args, **kwargs) File "/home/moon/.env/envpy3/lib/python3.5/site-packages/django/__init__.py", line 19, in setup configure_logging(settings.LOGGING_CONFIG, settings.LOGGING) File "/home/moon/.env/envpy3/lib/python3.5/site-packages/django/utils/log.py", line 73, in configure_logging logging_config_func(logging_settings) File "/usr/lib/python3.5/logging/config.py", line 795, in dictConfig dictConfigClass(config).configure() File "/usr/lib/python3.5/logging/config.py", line 566, in configure '%r: %s' % (name, e)) ValueError: Unable to configure handler 'file_database': __init__() got an unexpected keyword argument 'maxBytes' -
django i want leftouterjoin to table
django 2.0.2 python3.4 my model.py table1(models.Model): id = primarykey content = textfield key = foreignkey(table2) blind = integerfield registerdate = datetimefield table2(models.Model): id = primarykey value = charfield myviews.py table = table1.objects.filter(blind=0) table = table.annotate(table2val = Case(When(key__value__isnull=False),then=F("key__value")),output_field=CharField())) i want all if blind is 0 but this return value blind is 0 and must have key i want all if key is null or any -
Django Admin Inline without foreign key
I saw many question and answers but i could not find certain answer. Admin inline without foreign key Django admin inline display but foreign key has opposite relation So can i iterate model fields without relation to other models class CommentTabularInline(admin.TabularInline): model = Comment fields = ('content_type', 'text') extra = 1 class CommentAdmin(admin.ModelAdmin): inlines = [CommentTabularInline] admin.site.register(Comment, CommentAdmin) model class Comment(models.Model): user = models.ForeignKey(settings.AUTH_USER_MODEL, CASCADE, 'user_comment') text = models.TextField() content_type = models.ForeignKey(ContentType, CASCADE) object_id = models.PositiveIntegerField() content_object = GenericForeignKey('content_type', 'object_id') created_at = models.DateTimeField(auto_now=True) is_approved = models.BooleanField(default=False) I tried to do this, but i am getting error : (admin.E202) 'main.Comment' has no ForeignKey to 'main.Comment' -
django-rq configuration and installatino in apps.py
I use django-rq in my Django application. Currently, I install django-rq with pip, then add the following content to mysite/settings.py: INSTALLED_APPS += 'django_rq' RQ_QUEUES = { 'default': { 'HOST': 'localhost', 'PORT': 6379, 'DB': 0, 'DEFAULT-TIMEOUT': 360, } } This works well, but I want to distribute my application with an installation process as simple as possible. Is there a way to move the previous content of settings.py to my-app/apps.py or any other file distributed with my application? Something like from django.apps import AppConfig from django.conf import settings class MyAppConfig(AppConfig): name = 'myapp' def ready(self): settings.INSTALLED_APPS += 'django_rq' settings.RQ_QUEUES = { 'default': { 'HOST': 'localhost', 'PORT': 6379, 'DB': 0, 'DEFAULT-TIMEOUT': 360, } } This obviously won't work, but you get the idea. -
security when Django 1.11, apache2 and mod_wsgi is used
I have read a few interesting articles and watched a few videos but I'm afraid I still have a few things I help with understanding. I'm a very new dabbler to all this. 1) The example listed in the blog made sense and I tried to implement it but unfortunately my django project is in home folder and the full wsgi path is /home/serverio/server.io_Tools/server.io/mysite/mysite/wsgi.py. And since www-date needs read and execute permission in order to the open the folders leading up to the last mysite directory, I tried creating a new group which has rwx permission on the static and media folders. This was ok for the static and media folder because I used django collectstatic to move those files into the www folder, which is also has the the group that www-data belongs. The blog did not speak much about for situations like mine where I have wsgi.py in my home folder as shown above. So I tried to make the group of the home folder the same group that www-data belongs(recursively) but the end result was that I could not open the folder even though I also put my username into the same group that is used by ... -
AWS lambda in djnago app
I created a simple function in aws lambda for print something. How can I call or invoke that lambda function when I got an API request in my Django application? What all changes I need to do in my Django settings and all? -
Invite Registered Users to vote in voting app
I'm trying to expand the Django tutorial for a school project and make it into a more usable voting app. What I want is to allow users to create Polls and invite other registered users by email to vote on their Poll. Only the invited users will be allowed to vote. My models.py: class Poll(models.Model): question_text = models.CharField(max_length=200) pub_date = models.DateTimeField('date published', auto_now_add=True) is_active = models.BooleanField(default=True) activation_date = models.DateTimeField('Activation Date', blank=True, null=True) expiration_date = models.DateTimeField('Expiration Date', blank=True, null=True) public_key = models.CharField(max_length=30, blank=True) hash = models.CharField(max_length=128, blank=True) timestamp = models.DateTimeField(auto_now=True) def __str__(self): return self.question_text def was_published_recently(self): now = timezone.now() return now - datetime.timedelta(days=1) <= self.pub_date <= now was_published_recently.admin_order_field = 'pub_date' was_published_recently.boolean = True was_published_recently.short_description = 'Published recently?' class Choice(models.Model): question = models.ForeignKey(Poll, on_delete=models.CASCADE) choice_text = models.CharField(max_length=200) votes = models.IntegerField(default=0) def __str__(self): return self.choice_text class EligibleVoters(models.Model): user = models.ForeignKey(User, on_delete=models.SET_NULL, null=True) poll = models.ForeignKey(Poll, on_delete=models.CASCADE) email = models.EmailField(null=True) I have a Poll table which contains the Poll Title and other information regarding the Poll. I also created a separate Choices table (like in the tutorial) which has a ForeignKey to the Poll table and contains the poll choices. I figured that in order to invite users as eligible voters I needed a ... -
DJANGO // How do I make it so that each user has their own homepage? //
I'm relatively new to Django, but I'm in the process of making a website where each user has their own contacts list that they can add, edit, delete, etc. So far that functionality works. For the majority, I'm almost done, except for the fact that all users are seeing the same page when they register. I want it so that everytime a user is created it displays a blank template homepage. (I should also mention the fact that I have a registration page but not a sign-in/log-in page, so if you could also help me with that it would be great because I haven't been able to find a reliable tutorial having that all of them since my pages to crash.) -
Django Path To Resource Failure?
When I try a GET request on one of my API endpoints it can't find the endpoint. urls.py file looks like this from django.urls import path, include from django.contrib import admin from api.resources import NoteResource note_resource = NoteResource() urlpatterns = [ path('admin/', admin.site.urls), path('api/', include(note_resource.urls)), ] api.resources looks like this from tastypie.resources import ModelResource from api.models import Note class NoteResource(ModelResource): class Meta: queryset = Note.objects.all() resource_name = 'note' Any idea why this is happening? -
django celery worker keyword argument error
I'm trying to setup a simple webhook where incoming request are processed by a celery worker. That's my the hook in the view.py: @method_decorator(csrf_exempt, name='dispatch') class SendGridCallbackView(View): def post(self, request, *args, **kwargs): print('TEST') req_dict = {'request': request.body} sendgrid_email_tracking.apply_async(kwargs=req_dict) return HttpResponse(status=200) The task defined in tasks.py: @shared_task(base=WorkerBase, name='mailer.sendgrid-tracking-mail') def sendgrid_email_tracking(**kwargs): print('GOTCHA') When sending a test email from sendgrid it prints the TEST output but then the celery worker returns an error TypeError: sendgrid_email_tracking() got an unexpected keyword argument 'request' -
`registration/login` rather than `accounts/login`
In Django's 1.11 django.conf.global_setting.py, it configure a constant LOGIN_URL = '/accounts/login/' ################## # AUTHENTICATION # ################## LOGIN_URL = '/accounts/login/' LOGIN_REDIRECT_URL = '/accounts/profile/' It does redirect to 'registration/login.html'. class LoginView(SuccessURLAllowedHostsMixin, FormView): """ Displays the login form and handles the login action. """ form_class = AuthenticationForm authentication_form = None redirect_field_name = REDIRECT_FIELD_NAME template_name = 'registration/login.html' redirect_authenticated_user = False extra_context = None What confuse me very much is that why it is named as 'registration/login.html' rather than accounts/login.html? -
django1.9 model float field update
I want to know about float field data update. All fields are already made by modelforms. And When i enter the button in template, values in pdmv_data are calculated, and the result is into pdmv_rst. I try to program an application, But It's not working... I appreciate of your help. Thank you. Models.py class pdmv_data(models.Model): pdmv_dis=models.FloatField(name='pdmv_dis', verbose_name=' cc', default=2000, help_text='Displacement') pdmv_no_cyl=models.FloatField(name='pdmv_no_cyl', verbose_name=' EA', default=4, help_text='Number of Cylinder') pdmv_mflow=models.FloatField(name='pdmv_mflow', verbose_name=' kg/s', default=0.1, help_text='Mass flow rate') pdmv_Dp=models.FloatField(name='pdmv_Dp', verbose_name=' kPa', default=10, help_text='Differential pressure (Center muffler)') class pdmv_dataForm(ModelForm): class Meta: model = pdmv_data fields = '__all__' class pdmv_rst2(models.Model): pdmv_t_vol=models.FloatField(name='pdmv_t_vol', verbose_name=' L', default=None, help_text='Total Volume') class pdmv_rst2Form(ModelForm): class Meta: model = pdmv_rst2 fields = '__all__' -
How can I create a dynamic filter
I Have diferent attributes like brand,size and color I want a filter to dynamically as per the choice of user Product.objects.filter(attributes__userchoice=some_value). User can select multiple attribute and their values Example if the user selects size=L the query should be Product.objects.filter(attributes__size='L') -
Django does not use translated labels
I'm tying to send an email in two languages using django. In my settings.py I have it as follows: LANGUAGE_CODE = 'en-us' LOCALE_PATHS = ( os.path.join(BASE_DIR, 'locale'), ) And my project tree is as follows: The code for sending email is as follows: to_email = [email, ] from_email = 'no-reply@company.com' to_cc_emails = download_documents_cc_emails subject = _('The requested document') html_content = render_to_string('email_templates/download_documents.html', {'name': name}) msg = EmailMultiAlternatives(subject, html_content, from_email, to_email, to_cc_emails) msg.content_subtype = "html" # Main content is now text/html msg.attach_file(file_to_be_sent) msg.send() And download_documents.html is as follows: {% load i18n %} <div> <div>{% trans "Dear" %} {{ name|capfirst }},</div> <div style="margin: 25px 0;"> {% trans "The requested document is attached." %} <br /> </div> <div>{% trans "Best regards" %}</div> </div> When I do django-admin makemessages -l nl inside locale folder the right labels are created: #: main/views.py:68 msgid "The requested document" msgstr "Het aangevraagde document" #: templates/email_templates/download_documents.html:3 msgid "Dear" msgstr "Geachte" #: templates/email_templates/download_documents.html:5 msgid "The requested document is attached." msgstr "In bijlage vindt u het document." #: templates/email_templates/download_documents.html:7 msgid "Best regards" msgstr "Met vriendelijke groeten," But when I get the email it isn't translated. I get the email in English. Any idea what I do wrong? -
Deploying Django on Apache with mod_wsgi
I'm currently trying to set up a Django application on Apache on a Centos server, with the use of mod_wsgi. This is set up to run on https. It is on virtualenv. However, currently it gives a 504 Gateway Timeout error. Error log: (2)No such file or directory: mod_wsgi (pid=15007): Unable to stat Python home /bin/virtualenv:/var/www/django/mysite/mysite/lib/python3.6/site-packages. Python interpreter may not be able to be initialized correctly. Verify the supplied path and access permissions for whole of the path. Fatal Python error: Py_Initialize: Unable to get the locale encoding ModuleNotFoundError: No module named 'encodings' httpd.conf <VirtualHost *:443> ServerName mysite.example.com ServerAlias www.mysite.example.com # DocumentRoot /var/www/django/mysite LogLevel info ErrorLog /etc/httpd/logs/mysite_error.log Alias /static /var/www/django/mysite/static <Directory /var/www/django/mysite/static> Require all granted </Directory> <Directory /var/www/django/mysite/mysite> <Files wsgi.py> Require all granted </Files> </Directory> WSGIDaemonProcess mysite python-home=/bin/virtualenv:/var/www/django/mysite/mysite/lib/python3.6/site-packages WSGIProcessGroup mysite WSGIScriptAlias / /var/www/django/mysite/mysite/wsgi.py WSGIApplicationGroup %{GLOBAL} SSLEngine on SSLProtocol all -SSLv2 SSLCompression off SSLCertificateFile /etc/pki/tls/certs/mysite.cert.pem SSLCertificateKeyFile /etc/pki/tls/private/mysite.key.pem SSLCertificateChainFile /etc/pki/tls/certs/mysite.chain.pem </VirtualHost> -
Django with Instagram API. How to fix the encoding error?
Good morning, I'm trying to connect Instagram API with Django. I'm getting Instagram code and give this code to function response(). def response(request): if 'code' in request.GET: url = 'https://api.instagram.com/oauth/access_token' values = { 'client_id':'SOME_ID', 'client_secret':'SOME_SECRET', 'redirect_uri':'SOME_URL', 'code':request.GET.get('code'), 'grant_type':'authorization_code' } data = urllib.parse.urlencode(values) bin_data = data.encode('utf-8') req = urllib.request.Request(url, data=bin_data) response = urllib.request.urlopen(req) response_string = response.read() insta_data = json.loads(response_string) if 'access_token' in insta_data and 'user' in insta_data: #authentication success print('True') else: #authentication failure after step 2 print('False 2') elif 'error' in request.GET: #authentication failure after step 1 print('False 1') But I'm get TypeError: POST data should be bytes or an iterable of bytes. It cannot be of type str. What I'm doing wrong? Why when I encode to 'utf-8' or 'ascii' nothing happens? -
MultiValueDictKeyError at /add
Each time I add Project with Expense Category. It's displaying error in the browser Error Image MultiValueDictKeyError at /add 'categoriesString' Although the Project is getting saved in the database! Please help me to figure it out! -
DJANGO // How do I create an input field that only the users can see and not the admin? //
Currently I'm creating a website using Django. The purpose of my website involves storing personal information to the user. For user privacy and security sakes. I'm trying to make it so that I (The Admin) can't see what they have put in the Text or CharFields that gets displayed on their own personal homepage in order to make the user feel more comfortable putting their info on site. I have tried encrypting it just like a password kind of like so: password = forms.CharField(widget=forms.PasswordInput()) but it wouldn't let me or the user add anything to the form. Plus the old fields were shown as encrypted to the user. The way I want it is so that it looks encrypted to me on my admin page but to the user's page it should be normal text. So my one question is how would I be able to accomplish this feat? Thanks in Advance. -
Django tutorial error par3
First sorry I don't speak english very well I can speak a little I have a problem I am currently working on Django tutorial I want to take in my browser at /polls/34/ but I can't If I enter that into the browser it will refuse from localhost Please help me Look at the codes I have mysite/urls.py from django.contrib import admin from django.urls import include, path urlpatterns = [ path('polls/', include('polls.urls')), path('admin/', admin.site.urls), ] mysite/polls/urls.py from django.urls import path from . import views urlpatterns = [ # ex: /polls/ path('', views.index, name='index'), # ex: /polls/5/ path('<int:question_id>/', views.detail, name='detail'), # ex: /polls/5/results/ path('<int:question_id>/results/', views.results, name='results'), # ex: /polls/5/vote/ path('<int:question_id>/vote/', views.vote, name='vote'), ] mysite/polls/views.py from django.http import HttpResponse def detail(request, question_id): return HttpResponse("You're looking at question %s." % question_id) def results(request, question_id): response = "You're looking at the results of question %s." return HttpResponse(response % question_id) def vote(request, question_id): return HttpResponse("You're voting on question %s." % question_id) -
Extending django user(AbstractEmailUser) model
I have the extended user model like below.. class User(AbstractEmailUser): first_name = models.CharField(verbose_name=_('First name'),max_length=128) last_name = models.CharField(verbose_name=_('Last name'), max_length=128) avatar = StdImageField(upload_to='user_avatars/', null=True, blank=True, variations={ 'thumbnail': (settings.AVATAR_THUMBNAIL_WIDTH, settings.AVATAR_THUMBNAIL_HEIGHT, True) }) user_name = models.CharField(null=True,blank=True,verbose_name=_('User id'), max_length=128) def get_short_name(self): return self.last_name def get_full_name(self): return "%s %s" % (self.first_name, self.last_name) def __unicode__(self): return self.email def get_thumbnail_url(self): return self.avatar.thumbnail.url if self.avatar else None I want to authenticate all users other than admin using email field and the admin by user_name field in extended user model.....I am using django 1.9 Is there any default way to do this... -
Template rendering (Django):
Following is the context that contains these two variables, and is being sent for rendering through views.py in my django application: {"all":[{"a":1, "b":2},{"a":3, "b":4}], "columns": ["a", "b"]} code inside template rendering <table> <thead> <tr> {% for c in columns %} <td> {{ c }} </td> {% endfor %} </tr> </thead> {% for a in all %} <tr> {% for c in columns %} <td>{{ a.c }}</td> {% endfor %} </tr> {% endfor %} </table> Problem: I am basically trying to render table rows in Django using the above code. But, even after the data is present, the data is not displayed in the table. Am I correctly accessing the data by writing a.c . If no then, what is the correct code to get the desired output? -
DRF: callable in serializer choicefield
Although django supports callables for the model choices field, I can't find that django rest framework does. My choices in this case are kept in a separate db (which changes between production and dev, so I can't keep this info on the model). Currently, I can't run tests (pytest: Failed: Database access not allowed) because the separate db is being queried on import by the web app serializers.py on instantiation (you cannot mark imported db with the django_db mark). Can anyone suggest a workable solution here? plot_source_positions = serializers.ChoiceField( choices=get_available_data_sets(), <---- not happy allow_blank=True, allow_null=False, required=False) def get_available_data_sets(): return get_service_inputs() . <--- makes a call to cache table -
Stuck for hours on this. You may need to add 'maginate.net' to ALLOWED_HOSTS
I know this question is very similar to others but I read all of them and still have not found a solution. I registered maginate.net with Google Domains so the domain is active. When entering that domain it gives a DisallowedHost Exception. It says to put the domain name in ALLOWED_HOSTS, which I did, in the local_settings.py. And when I put the IP address 206.189.179.58, the website runs perfectly. In my ALLOWED_HOST is a list: ALLOWED_HOSTS = ['206.189.179.58', 'maginate.net', 'www.maginate.net'] And yes I have restarted the server many times. I don't know if my settings.py has anything to do with this, but leaving the ALLOWED_HOSTS blank or not still gives the error. I'm also following this tutorial and doing exactly what it says. -
how can i synchronize the django celery task?
I have two celery task @app.task(bind=True) def task1(): @app.task(bind=True) def task2(): and each task is called by a different api like following @api_view(['POST']) @permission_classes((IsAuthenticated,)) def api1(request): task_1.delay() @api_view(['POST']) @permission_classes((IsAuthenticated,)) def api2(request): task_2.delay() if task2 is called when task1 is running in the background, I want to run task2 after task1 is finished how can i solved the problem?? I'm also considering giving one queue for each user Please give me a perfect solution... -
Call class method from another class in django
I'm building an e-commerce project in Django. I'm using an API from a third party in order to process payments, and every time the payment status changes I receive a notification which changes purchase status. That part is done OK, but there's another thing: the objects being sold are not the purchase objects, but they are contained in it. So when the status shifts to paid, I want to give the user permission to view the content of the purchase object the user has just bought (say, a course). To do so, I'm using django_guardian. class Course(models.Model): title = models.CharField("Título", max_length=140, null=False) description = RichTextUploadingField("Descrição", null=False) ... # give user permission to see the course's content def allow(self, user): assign_perm("view_content", user, self) When I call that method from a function in views.py it works fine. Now, what I actually need is to able to call it from a Manager, which is in a managers.py file. def update_purchase_status(self, transaction): ... user = purchase.user purchase.status = status_map[transaction['status']] purchase_items = [item.course for item in purchase.cart.cart_items.all()] for item in purchase_items: ... elif purchase.status == ("paid" or "available" or "disputed"): item.allow(user) As I said, updating the status works just fine. What doesn't work is the ...
