Django community: RSS
This page, updated regularly, aggregates Django Q&A from the Django community.
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Django - 'QuerySet' object has no attribute 'get_upvotes_count'
I am a beginner at Django and I am trying to build an app to manage games. It is possible for registered visitors to rate the game. Furthermore you can comment the game and this comment can be rated as well. But only once. The difficult thing for me is the independent evaluation of comments and articles. Furthermore, the "Queryset" error message occurs when I create a game. I already tried to initialize the attribute "comment" in the views with "None". Did not work. How do I get the app running ? Here is my views.py: from django.http import HttpResponseRedirect from django.shortcuts import render, get_object_or_404 # Create your views here. from django.shortcuts import redirect, render from django.urls import reverse_lazy from django.views.generic import CreateView, DetailView, ListView from .forms import GameForm, CommentForm from .models import Game, Comment class GameListView(ListView): model = Game context_object_name = 'all_the_games' template_name = 'games-list.html' class GameDetailView(DetailView): model = Game context_object_name = 'that_one_game' template_name = 'game-detail.html' class GameCreateView(CreateView): model = Game form_class = GameForm template_name = 'game-create.html' success_url = reverse_lazy('game-list') def form_valid(self, form): form.instance.user = self.request.user return super().form_valid(form) def game_list(request): context = {'all_the_games': Game.objects.all()} return render(request, 'game-list.html', context) def game_detail(request, **kwargs): game_id = kwargs['pk'] game = Game.objects.get(id=game_id) comment = … -
How to view items in database selected by user in a django app?
I have a model orders that stores users orders at a restaurant. I want to create a view that allows me to show every item available in the database on the home page in a grid. Then when a user clicks on any of the items it should take them to a new page with more info on the item. How would I set logic for the view, to know what item the user clicked? -
AttributeError: module 'enum' has no attribute 'IntFlag' from Azure
I have a Django project running on Azure, and I encountered this issue with the enum module and I have tried everything from here(Why Python 3.6.1 throws AttributeError: module 'enum' has no attribute 'IntFlag'?) The problem is that I don't have the issue locally, I only see the issue on Azure. Therefore, I cannot just uninstall it locally. I have tried to uninstall it in the Azure terminal, but it showed that the module was not found. I have also tried to install aenum instead of enum by adding it to requirements.txt, still didn't work. Can someone please advise me on how to fix this issue? Here is a screenshot of the error Here is the link to the source code -
Django: Many To Many Field allow fields to be added if it is in another field
I'm experimenting with Django and I'm trying to figure out Many to Many Relationships. Let's say I have certain model named "Facility", similarly I created another model named "Hotels" which contains fields 'facility' and 'featured_facility' both are in Many To Many relationship with "Facility". I want to add featured_facility only if it is available in 'facility' fields how can I do that? Here is my models code class Facility(models.Model): name = models.CharField( max_length=100, validators=[validate_facility_name], unique=True, ) description = models.CharField(max_length=100, validators=[validate_facility_description]) can_be_featured = models.BooleanField(default=False) similarly Hotel model is class Hotels(models.Model): hotel_name = models.CharField( max_length=20, unique=True, validators=[validate_hotel_name] facility = models.ManyToManyField( Facility, related_name='hotel_facility', blank=True, ) featured_facility = models.ManyToManyField( Facility, related_name='featured_hotel_facility', blank=True, ) class Meta: default_permissions = () verbose_name = 'Hotel' verbose_name_plural = 'Hotels' def __str__(self): return self.hotel_name Now I want to add 'featured_facility' only if it is available in 'facility' no new featured facility from Facility can be added in 'featured_facility' how can I do that? -
Django Error: ImproperlyConfigured / define the environment variable / call settings.configure()
I have the following model: class my_model(models.Model): item_id = models.IntegerField(max_length=100) item_array = ArrayField(models.FloatField()) When I try: df = pd.read_pickle('df.pkl') db = my_model() for item in df.columns: db.item_id = item db.item_array = df[item] db.save() I get the following error: ImproperlyConfigured: Requested setting INSTALLED_APPS, but settings are not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings. What could I do to fix this? -
Creating an array field in a Django Model
Hey guys I'm creating a basic social media app and I'm trying to create an array field that can hold a list of followers that a user is following and is later used to print out the posts of all the users followers. How do I create an array or list with Django that will allow me to save multiple fields for multiple follows? Right now, I have it as an Integer field. Thanks! class User(AbstractUser): pass follows = models.CharField(max_length=64, default=0) followers = models.IntegerField(max_length=64, default=0) -
Git merge conflict in django project
I am working on a django project. I have two branches, master and alpha. I am trying to merge the two branches. My alpha branch is the finished product. The two branches are dramatically different. I keep getting a merge conflict. I deleted the database in the master. I want the database in the alpha to be the main one. can anyone help me. How do I successfully merge them. -
request.POST parameters are missing
Hello I am trying to pass some values from my signup form to a django view but for some reason the values are missing. My view.py : @csrf_exempt def signup(request): if request.method =='POST': for key, value in request.POST.lists(): print(" DEBUG %s %s" % (key, value)) print(request.POST['name'],email=request.POST['email']) return render(request, 'front_app/login.html') My register.html : <form class="form" method="post" action="{% url 'signup' %}" name="submitForm"> {% csrf_token %} <input type="text" class="name" placeholder="Name" id="name" required> <input type="email" class="email" placeholder="Email" id="email" required> <div> <input type="password" class="password" placeholder="Password (8 characters minimum)" id="password" minlength="8" required> </div> <input type="submit" class="submit" value="Register" > </form> and my urls.py : urlpatterns = [ # other not related urls path('signup', views.signup, name='signup'), ] My problem is that when the views.signup function is running it is missing all three values that I am trying to send : name, email and password. It is a POST request (and not GET) but the only values in the QueryDict are the "encoding" and "csrfmiddlewaretoken" values. Any help is appreciated! -
Django user password hash, oracle db, and java
im developing and ecommerce site on django for a Sushi Restaurant, and i have to create a CRUD for users in java and edit info from the database in oracle, the database are generated with django, so my questions are. how can i deal with the django hash for password? change password from the java crud app would be nice, if can i disable the hash from django would be nice to, its just a institute project, so doesn't matter the security. -
HTML not rendering properly
I'm trying to render an HTML in my django project on the basis of data that I'm receiving from the backend but can't understand on how to do it. If somebody can help me out that would be super awesome. Thanks Here is the structure of the data that I have { "structure":"linear", "layout":[ { "structure":"Rubber_Duck", "default_behaviour":{ "fly":[ "FlywithWings", " I am Flying!! " ], "quack":[ "Quack", "Quack! Quack!" ] }, "custom_behaviour":"", "is_duck":true }, { "structure":"Model_duck", "default_behaviour":{ "fly":[ "FlywithWings", " I am Flying!! " ], "quack":[ "MuteQuack", "No Quack!" ] }, "custom_behaviour":"", "is_duck":true }, { "structure":"grid", "layout":[ { "structure":"Mallord_Duck", "default_behaviour":{ "fly":[ "FlywithWings", " I am Flying!! " ], "quack":[ "Quack", "Quack! Quack!" ] }, "custom_behaviour":"", "is_duck":true }, { "structure":"Rubber_Duck", "default_behaviour":{ "fly":[ "FlywithWings", " I am Flying!! " ], "quack":[ "Quack", "Quack! Quack!" ] }, "custom_behaviour":"", "is_duck":true }, { "structure":"Rubber_Duck", "default_behaviour":{ "fly":[ "FlywithWings", " I am Flying!! " ], "quack":[ "Quack", "Quack! Quack!" ] }, "custom_behaviour":"", "is_duck":true }, { "structure":"Rubber_Duck", "default_behaviour":{ "fly":[ "FlywithWings", " I am Flying!! " ], "quack":[ "Quack", "Quack! Quack!" ] }, "custom_behaviour":"", "is_duck":true } ] }, { "structure":"linear", "layout":[ { "structure":"Model_duck", "default_behaviour":{ "fly":[ "FlywithWings", " I am Flying!! " ], "quack":[ "MuteQuack", "No Quack!" ] }, "custom_behaviour":"", … -
Can I serve static files (css, html, etc.) from a different server in Django
So I'm trying to serve templates, images, css and other static files from a Web Server (frontend) running Apache into an App Server (backend) running Django, the Django app is already proven to work locally so I splited static files and push them into the Web server and the .py files into the App Server, so far I've seen that I need to use mod_wsgi package from Apache and then run $ python manage.py collectstatic So it makes a copy of those static files into the App Server. But the problem comes when changing the urls of every template. Also I saw this other solution but I'm not sure if I implement that solution I still need to do the mod_wsgi thing. Can someone please help me out here please? Or give me some advice on how to do it? Thanks -
AWS Elastic Beanstalk : Deploying Django application Failed
I've been trying to deploy my Django backend for my react application on EB but I can running into an error when I try deploying.I'm not sure how to pull up more details from the log, but I have also attached by requirements.txt file below the error results. 2020-11-22 23:44:27 ERROR Your requirements.txt is invalid. Snapshot your logs for details. 2020-11-22 23:44:30 ERROR [Instance: i-0da4be9088c225a28] Command failed on instance. Return code: 1 Output: (TRUNCATED)...) File "/usr/lib64/python2.7/subprocess.py", line 190, in check_call raise CalledProcessError(retcode, cmd) CalledProcessError: Command '/opt/python/run/venv/bin/pip install -r /opt/python/ondeck/app/requirements.txt' returned non-zero exit status 1. Hook /opt/elasticbeanstalk/hooks/appdeploy/pre/03deploy.py failed. For more detail, check /var/log/eb-activity.log using console or EB CLI. 2020-11-22 23:44:31 INFO Command execution completed on all instances. Summary: [Successful: 0, Failed: 1]. 2020-11-22 23:45:33 ERROR Create environment operation is complete, but with errors. For more information, see troubleshooting documentation. asgiref==3.3.1 attrs==20.3.0 awsebcli==3.19.2 bcrypt==3.2.0 blessed==1.17.11 boto3==1.16.23 botocore==1.19.23 cached-property==1.5.2 cement==2.8.2 certifi==2020.11.8 cffi==1.14.3 chardet==3.0.4 colorama==0.4.3 cryptography==3.2.1 Django==3.1.3 django-cors-headers==3.5.0 django-environ==0.4.5 django-storages==1.10.1 djangorestframework==3.12.2 docker==4.3.1 docker-compose==1.25.5 dockerpty==0.4.1 docopt==0.6.2 environ==1.0 future==0.16.0 idna==2.10 jmespath==0.10.0 jsonschema==3.2.0 mysql-connector-python==2.0.4 mysqlclient==2.0.1 paramiko==2.7.2 pathspec==0.5.9 Pillow==8.0.1 pycparser==2.20 PyMySQL==0.10.1 PyNaCl==1.4.0 pyrsistent==0.17.3 python-dateutil==2.8.1 pytz==2020.4 PyYAML==5.3.1 requests==2.24.0 s3transfer==0.3.3 semantic-version==2.5.0 six==1.15.0 sqlparse==0.4.1 termcolor==1.1.0 texttable==1.6.3 urllib3==1.25.11 wcwidth==0.1.9 websocket-client==0.57.0 -
How to pass 2 parameters in for loop in django templates
i want to pass 2 parameters in for loop in my template {% for x, y in text %} <p>{{ x }}</p><h1>{{ y }}</h1> {% endfor %} my views: text = [("e", "w"), ("1", "2")] return render(request, "my_template.html", {"text": text}) this isn't even loop and it does absolute nothing what I need to write in the template or in "text" to make this work? -
Django Post Deployment Issues - Scripts and Models
Hi it's my first time deploying a Django app. I'm using PythonAnywhere to host and learn more. I am aware that deployment requires additional steps and code changes versus dev and believe I have taken these steps researching the documentation and other issues on Stack Overflow. After separating out javascript from the html, migrating the models and collecting the static files I'm having a major issue with the style of the index file not inheriting the base layout as well as being running the javascript. Additionally drop downfields that are reading from models are not working. Note all other pages are inheriting the base file but are not linking to models either for dropdowns. I've reviewed the models and they are in place and populated. Likely I am missing something with the base layout file and the models. Greatly appreciate if someone can point me in the right direction. Layout.html (base layout file) <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0"> {% load static %} <link rel="stylesheet" type="text/css" href="{% static 'app/content/bootstrap.min.css' %}" /> <link rel="stylesheet" type="text/css" href="{% static 'app/content/site.css' %}" /> <script src="{% static 'app/scripts/modernizr-2.6.2.js' %}"></script> <script src="https://code.jquery.com/jquery-1.12.4.js"></script> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.13/css/select2.min.css" integrity="sha512-nMNlpuaDPrqlEls3IX/Q56H36qvBASwb3ipuo3MxeWbsQB1881ox0cRv7UPTgBlriqoynt35KjEwgGUeUXIPnw==" crossorigin="anonymous" /> </head> … -
Restricting Signal Notifications in a Django Project to specific Attribute in Model
I have added a notification everytime a user submits a Like button to a post, the owner of the liked post receives a notification. I have set Value options for each Like button to be Like or Unlike so now I am trying to restrict the notification to be sent only if the Value of the like clicked is Like only. So, now in the Like Model I have added signal and a condition that if the Like.value== Like the signal activates but for some reason it is not working and I am not sure why. My question is: How do I set the notification signal to be sent only when the Like.value== Like? Here is the post models.py: class Post(models.Model): title = models.CharField(max_length=100, unique=True) likes = models.ManyToManyField(User, related_name='liked', blank=True) Here is the like models.py: LIKE_CHOICES = ( ('Like', 'Like'), ('Unlike', 'Unlike') ) class Like(models.Model): # To know Who liked user = models.ForeignKey(User, on_delete=models.CASCADE) post = models.ForeignKey(Post, on_delete=models.CASCADE) value = models.CharField(choices=LIKE_CHOICES, default='Like', max_length=8) updated = models.DateTimeField(auto_now=True) created = models.DateTimeField(auto_now=True) def __str__(self): return f"{self.post}-{self.user}-{self.value}" def user_liked_post(sender, instance, *args, **kwargs): if Like.value=='Like': like = instance post = like.post sender = like.user notify = Notification(post=post, sender=sender, user=post.author, notification_type=1) notify.save() else: None def user_unlike_post(sender, … -
how to set a timer or schedule non-periodical task in Django > 3.0 and DRF
Im new to async programming and new Django's docs aren't really specific what should and should not be done so here is my question. How to set some kind of a timer in Django (or django-programatically in server) after which some Django code will be run. To visualize this I will present an example: Student has 10 minutes to write a test. Student starts a test (enters some view). Student can post his test results within those 10 minutes but if he crosses the 10 minute barrier, the test should stop and such event should be saved in database. This sounds like an async job but I don't know the good practise for coding that. If it can be done synchornousily it would be much better. To clarify - I'm using Django REST framework and the student is on a mobile client. (setting a timer in mobile app is not an option due to security reasons). I know about Celery but it seems like an overkill when Django already has async. I will add that there will be several tousand student tests running at the same time so performance is important. Can anyone help me or point me to a … -
How to add two Field Instances in a Django Model into a variable?
Good day! I'm trying to understand if there is a proper way of adding name_first & name_last Fields in the Customer Model into name_full Field. The name_full Field will be used as ftring renurn value for the Model. Relation with the Order Model via Foreign Key. class Customer(models.Model): name_first = models.CharField(max_length=30, null=False, blank=False) name_last = models.CharField(max_length=30, null=False, blank=False) # name_full = ... name_first+name_last def __str__(self): return self.name_full I've tried looking for similar question and there is a slight chance of not knowing how to ask a proper question) Cheers! -
Store a matrix in Django
I have the following matrix: item_1 item_2 item_3 item_1 1 0 0 item_2 0 2 0 item_3 0 0 3 What is the best way to store this matrix into django, so that in the future I can retrieve an entire column (being able to see the ID of each row), and use it to perform some calculations in a view? Obs: This matrix is going to have thousands of columns and rows. -
Passing id in url to get object info
I'm like 3 days trying to find the solution to this problem. I have a dashboard with items, every single item is called board. The dashboard is populated with object that i've stored in my local db. Data like the name of this board is shown in the html page called dashboard. What i want to do is, when i click on the link named 'Scopri di più' , to be redirected in the board.html populated with the clicked item data. At the time i'm only getting the error 'NoReverseMatch'. What am i doing wrong? dashboard.html {% extends "base.html" %} {% block content %} <h3>{{title}}</h3> <a href="/new_board/" class="text-dark">Aggiungi Board</a> <div class="row mt-5"> {% for bn in user_board_list %} <div class="col ml-4"> <div class="card"> <div class="card-body"> <h5 class="card-title"> {{ bn.board_name}} </h5> <p class="card-text">Breve descrizione della board</p> <a href="{% url 'board_view' pk=board.id %}">Scopri di più</a> </div> </div> </div> {% endfor %} </div> {% endblock %} views.py class Board_dets_view(DetailView): template_name = "board.html" def board_view(request, pk): title="Board" #board = get_object_or_404(request,pk=pk) board = Board.objects.get(pk=pk) context = {'title': title, 'board': board} return render(request, 'board.html', context) models.py class Board(models.Model): board_name = models.CharField(unique=True, max_length = 200, verbose_name='board_name', error_messages= {'unique': 'Nome della board già utilizzato. Per favore inseriscine un … -
Where is the error ???? KeyError: 'start_date'
I havent put any body arguments (start_date, end_date) in my GET request , should work else statement but appears strange mistake , so there is issue ?? class MoviesTop(APIView): def get(self, request): if request.data.get('start_date', 'end_date'): start_timestamp = request.data['start_date'] end_timestamp = request.data['end_date'] topMovie = Movie.objects.annotate( num_comments=Count( 'Comments', filter=Q(Comments__pub_date__range=( start_timestamp, end_timestamp)) ) ).order_by('-num_comments') else: topMovie=Movie.objects.annotate( num_comments=Count('Comments')).order_by('-num_comments') serializer=MoviesTopSerializator(topMovie, many=True) return Response(serializer.data) -
Django values_list returns only one result
i'm just stucked into a problem while returning values from table, here you can look at my Django Model: class Server(models.Model): organization = CustomCharField( choices=get_choices('organizations'), max_length=255, blank=True ) Here you can see my Choice model: class Choice(models.Model): organizations = JSONField(default=list) def __str__(self): return self._meta.model.__name__ So if i try this: Choice.objects.values_list('organizations', flat=True).distinct() I got that: <QuerySet [[['Company1', 'Company1'], ['Company2', 'Company2'], ['Company3', 'Company3'], ['Company4', 'Company4']]]> The main problem contains in this line of code: Server.objects.values_list('organization', flat=True).distinct() And it returns this: <QuerySet ['Company3', '']> What's wrong with this? Can someone explain me. Feel free to answer. -
MultiValueDictKeyError at /meeting/user-location-update/
I have this form on my django template which gets a user info and updates it and when i want to save the update i get this error : MultiValueDictKeyError at /meeting/user-location-update/ 'avatar' and avatar is the user profile photo on models.py this is my form : <html> <body> <form action="" method="post" name="updatelocation_form" enctype="multipart/form-data"> {%csrf_token%} <label for="your_name">latitude </label> <input id="lat" type="text" name="lat" value="{{user_info.lat}}"> <input id="lng" type="text" name="lng" value="{{user_info.lng}}"> <input id="user_address" type="text" name="user_address" value="{{user_info.user_address}}"> <input type="file" id="avatar" name="avatar" value="{{user_info.avatar}}"> <input type="submit" value="submit"> </form> {%if messages%} {%for message in messages%} {{message}} {%endfor%} {%endif%} </body> and this is views.py : @login_required def userlocation_update(request): user_info= get_user_model().objects.get(username=request.user) if request.method=="POST": updatelocation_form = UserLocation_updated(request.POST or None, request.FILES or None,instance=request.user) if updatelocation_form.is_valid(): updatelocation_form.save() return redirect('index') else: messages.error(request, "error") else : updatelocation_form = UserLocation_updated() return render(request, '../templates/templates_v2/update_location.html', {'updatelocation_form': updatelocation_form,'user_info':user_info}) -
Shared Django field across model instances
I'm new to Django, and need help with something quite basic. Suppose we created a model representing a worker, and we wanted to create a function to calculate how much each worker made after taxes. For simplicity, a worker has a take-home pay of their gross income times their tax rate, and the tax rate is a variable that all workers share. class Worker(models.Model): gross_income = models.FloatField(null=True, blank=True) def take_home_pay(self): return self.gross_income * tax_rate I know how to store each worker's gross income in the database. I did it using models.FloatField. Here's my questoin: how would I store the tax rate, which is shared across workers, in the database? -
Static files 404 in production
None of my static files are loading after deploying my app. When I check in the dev tools they're all 404. I ran python3 manage.py collectstatic My static folder has the following permissions and ownership: drwxr-xr-x 8 root root 4096 Nov 17 23:28 static My /etc/apache2/sites-enabled/example.conf: <VirtualHost *:80> ErrorLog ${APACHE_LOG_DIR}/example-error.log CustomLog ${APACHE_LOG_DIR}/example-access.log combined WSGIDaemonProcess example processes=2 threads=25 python-ho> WSGIProcessGroup example WSGIScriptAlias / /srv/example/example/wsgi.py Alias /robots.txt /srv/example/static/robots.txt Alias /favicon.ico /srv/example/static/favicon.ico Alias /static /srv/example/static/ Alias /media /srv/example/media/ <Directory /srv/example/example> <Files wsgi.py> Require all granted </Files> </Directory> <Directory /srv/example/static> Require all granted </Directory> <Directory /srv/example/media> Require all granted </Directory> </VirtualHost> -
How to add Conditionals for a Notifications System in a Django Project
I have set a Notification system for my Django project when a user likes or comments on a post the Author received a notifications of this activity. I am trying to add an option so that the Author of the Post can receive a Notification also when the num_likes reaches a certain no. So, here is what I have tried but nothing happened. Here is the models.py class Post(models.Model): title = models.CharField(max_length=100, unique=True) author = models.ForeignKey(User, on_delete=models.CASCADE, related_name='author') num_likes = models.IntegerField(default=0, verbose_name='No. of Likes') likes = models.ManyToManyField(User, related_name='liked', blank=True) def __str__(self): return self.title def save(self, *args, **kwargs): if not self.slug: self.slug = slugify(self.title) super(Post, self).save(*args, **kwargs) class Meta: verbose_name_plural = 'Blog Posts' #---------------------------My trial------------------------------------------ def like_progress(sender, instance, *args, **kwargs): post = instance if post.num_likes == 1: notify = Notification(post=post, user=post.author, notification_type=3) notify.save() # num_likes post_save.connect(Post.like_progress, sender=Post) #---------------------------My trial------------------------------------------ Here is the notifications model.py class Notification(models.Model): NOTIFICATION_TYPES=((1,'Like'),(2,'Comment'),(3,'Admin')) post = models.ForeignKey('blog.Post', on_delete=models.CASCADE, related_name="noti_post", blank=True, null=True) sender = models.ForeignKey(User, on_delete=models.CASCADE, related_name="noti_from_user") user = models.ForeignKey(User, on_delete=models.CASCADE,related_name="noti_to_user") notification_type= models.IntegerField(choices=NOTIFICATION_TYPES) text_preview= models.CharField(max_length=90,blank=True) date=models.DateTimeField(auto_now=True) is_seen=models.BooleanField(default=False) def __str__(self): return self.notification_type here is the notifications app views.py def ShowNotifications(request, *args, **kwargs): user=request.user notifications= Notification.objects.filter(user=user).order_by('-date') Notification.objects.filter(user=user, is_seen=False).update(is_seen=True) template= loader.get_template('notifications/notifications.html') context = { 'notifications': notifications, } return HttpResponse(template.render(context, request)) here is …
