Django community: RSS
This page, updated regularly, aggregates Django Q&A from the Django community.
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Django and Python
Good afternoon, I am new to Django / Python and I am finding my way around things. I've been searching around on the internet but cant really find an answer to my question which is the following: I am trying to create a Django website that will have several pages. On each of these pages I am looking to create a Python task. One of these tasks on one of the pages might be for a user to enter an input such as a name John Smith and click search. I wish for the Python script to then go and search for all John Smith related material on the internet and return results. Firstly would the Python script be able to sit on the Django web page to do this ? Or am I misunderstanding what Django can do. Secondly will I just mix the script in with the HTML etc ? Thank you in advance. -
Accessing model data in python django
I have a a Django model: class Myvalues(models.Model): items_list = models.JSONField() I have populated this model in Django admin. I now want to access the data inside this model. However I am getting an error that says: 'Manager' object has no attribute ‘items_list' The way I am trying to access it is as follows: Print(Myvalues.objects.items_list.values()) I don’t understand why this is coming up as the class has that model in it. Out of interest I printed the all() result of Myvalues class, like so: print(Myvalues.objects.all()) this resulted in the following: <QuerySet [<Myvalues: Myvalues object (1)>]> How can I access the data that’s in my items_list model? -
Django Urls conflict
In my App urls.py i have a urls conflict, every one is pointing to a different View, they have same syntax but one have a urls.py path('dashboard/categories/<str:category_name>', views.CategoryProductsView.as_view(), name='category_products') path('dashboard/categories/add_category', views.AddCategoryView.as_view(), name='add_category'), When i disable (comment) the first one the second url works fine , that's why i think that the problem comes from a url conflict -
what kind of architecture pattern is my application?
I am trying to understand what kind of architecture my application has. I have a simple Django App which can create, read, update and delete from a MySQL database I have connected to it. This app is for one specific customer. now I would either say it is a monolithic architecture because it is all coded in the same application and if some component goes down(presentation, logic or data) the whole application will break. but I would maybe also say it was a layered(n-tier) architecture maybe? because Django it self is MVT architecture? So what is the right to say? -
django: customized primary key based on form template
I have the following model: UNIT = (("pounds","pounds"),("pcs","pcs"),("kg","kg"),("g","g")) CATEGORIES = (("finished good","finished good"),("raw material","raw material")) class Product_Hierarchy(models.Model): product_code = models.CharField(max_length=100, primary_key=True) parent_product_code = models.ForeignKey("self",on_delete=models.CASCADE) product_name = models.CharField(max_length=100) product_category = models.CharField(max_length=100,choices=CATEGORIES, default="finished good") stock_on_hand = models.FloatField(max_length=1000000) unit = models.CharField(max_length=100, choices = UNIT, default="pcs") and I am trying to set the product code to be build in accordance with the category in which the product belongs to. It does not seem possible to automatically build it after the product category selection. Because the product creation is rendered in two templates: finished good registration template and the other one is the raw material registration template. I am wondering if I could write something that detects from where the model is accessed and automatically generate the code corresponding to the category. Here is what my form look like: CATEGORY_CHOICES = [ ('finished good', 'finished good'),('raw material', 'raw material'), ] UNIT = [("pounds","pounds"),("pcs","pcs"),("kg","kg"),("g","g")] class UpdateProductForm(forms.ModelForm): product_category = forms.CharField(widget=forms.Select(choices=CATEGORY_CHOICES), label='Category') product_name = forms.CharField(label = 'Product Name') stock_on_hand = forms.CharField(label = 'Stock On Hand') unit = forms.CharField(widget=forms.Select(choices=UNIT), label='Unit') class Meta: model = Product_Hierarchy fields = ("product_name", "product_category", "stock_on_hand", "unit") I have not yet found a way to do that, the documentation does not cover it and my … -
How can we achive max of every stock valid date with foreign key name with ORM Django
model class stock(models.Model): id = models.AutoField(primary_key=True) symbol = models.CharField(max_length=30) name = models.CharField(max_length=50) sector = models.CharField(max_length=50,blank=True,null=True) validtill = models.DateTimeField() created_at = models.DateTimeField(auto_now_add=True) updated_at = models.DateTimeField(blank=True,null=True) class quote(models.Model): id = models.AutoField(primary_key=True) stock = models.ForeignKey(stock, related_name='quote', on_delete=models.CASCADE) valid_till = models.DateTimeField() ... Current solution quote.objects.values('valid_till').annotate(max_date=Max('valid_till')).values('stock','valid_till','price','created_at') {'stock': 984, 'valid_till': datetime.datetime(2021, 12, 9, 19, 4, 16), 'max_date': datetime.datetime(2021, 12, 9, 19, 4, 16)} getting the result from above query but only thing I want is get the stock symbol from foreign key table instead of id I want foreign key table column value -
Multi-model RSS Feed in Django
I am trying to figure out how to have a multi-model RSS feed in Django. That is, I would like Django to serve updates of two different models under one RSS url. Here is what I have thus far class ArticleFeed(Feed): title = "Articles" link = "/articles/" description = "RSS feed of Articles" def items(self): return Article.objects.filter(is_published=1) def item_title(self, item): return item.title def item_description(self, item): return item.get_description() def item_link(self, item): return item.get_absolute_url() class VideoFeed(Feed): pass class atomFeed(Feed): feed_type = Atom1Feed In urls.py I have the following path path('rss/', ArticleFeed(), name="article_feed"), I would like rss/ to provide updates to both the Article and Video model. The Video model has similar fields but is non-verbatim. -
Django translation.override() not working
I literally copy-pasted this from the docs: class CustomerAdmin(ExportActionMixin, admin.ModelAdmin): def mail(self, request, queryset): with translation.override('nl'): print(_('Hello')) still prints Hello instead of Hallo Docs state this should work regardless of what settings or middleware you've got enabled. I tried nl, de, and dk, it's always English. I'm on Django 3.6 -
How to check if a request consists of session id and csref token in the cookie in Django rest framework?
my rest_framework authentication and permission classes "DEFAULT_PERMISSION_CLASSES": [ "rest_framework.permissions.IsAuthenticated", "rest_framework.permissions.IsAdminUser", "rest_framework.permissions.AllowAny", ], "DEFAULT_AUTHENTICATION_CLASSES": ( "rest_framework_simplejwt.authentication.JWTAuthentication", "rest_framework.authentication.SessionAuthentication", "rest_framework.authentication.BasicAuthentication" ), login view class UserLoginView(generics.RetrieveAPIView): """ View for a user to login through 1FA. The view provides a post request that accepts a email and password. Returns a jwt token as a response to authenticated user. """ throttle_scope = "login" permission_classes = (permissions.AllowAny,) serializer_class = UserLoginSerializer def post(self, request): """ POST request to login a user. """ #if session key is not present then create a session for the user serializer = self.serializer_class(data=request.data) serializer.is_valid(raise_exception=True) if not request.session.session_key: request.session.save() return Response("logged in") In my login view if user credentials are valid i am creating a user session if not created yet. For all other requests i need to ensure that user has a active session i.e. a session id in the cookie and csrf token to secure the application , is there method provided by rest framework to do that or i need to write my own permission classes for the views -
calling external API results in alert messages
I havwe a fine working script, that behaves odly: def get_info(self, env, limit = None): token = self.get_token()["access_token"] if limit == None: url = f"""{env}infos""" else: url = f"""{env}infos?limit={limit}""" payload = {} headers = {"Authorization": f"""Bearer {token}"""} response = requests.request("GET", url, headers = headers, data = payload) if response.status_code != 200: return False return json.loads(response.text) There is a simple view returning the data to the frontend: class TheView(TemplateView): template_name = "apihlp/index.html" def get_context_data(self, *args, **kwargs): context = super().get_context_data(**kwargs) data = get_data() context.update({"data": data}) return context with get_data looking like this: def get_data(): infos = get_infos("some_url", limit = 20) ORGADATA = [] counter = 0 for info in infos: name = f"""<h3 style="color:green">{counter}: {info["organization"]}</h3>""" try: owners = "".join([f"""<li>{info["mail"]}""" for info in infos["owner"]]) except: owners = "" ORGADATAHTML = f"{name}<h4>owners:</h4>{owners} ORGADATA.append({"counter": counter, "id": info["id"], "name": info["organization"], "HTML": ORGADATAHTML}) html part is even simpler: {% for item in data %} {{ item.HTML|safe }} {% endfor %} I know from doing the same call in postman, I can receive 50+ objects. When I set limit to 10 or 20 everyhing works fine (works fine in Postman with set to 10000 as well ...). But in Django I get: [![enter image description here][1]][1] and after … -
How to use count() in serializers?
I am trying to get count of article likes,but the problem is that i am facing with various errors. Here is my code: class ArticleLikeSerializer(serializers.ModelSerializer): class Meta: model = ArticleLike fields = ('id',"author","article",'timestamp') class ArticleSerializer(serializers.ModelSerializer): articlelikes_set = ArticleLikeSerializer(source='articlelikes',required=False,many=True) total_likes = serializers.SerializerMethodField(read_only=True) class Meta: model = Article fields = ('id','author','caption','total_likes','articlelikes_set') def get_total_likes(self, language): return articlelikes_set.count() Here is my error: name 'articlelikes_set' is not defined How can i solve the problem? -
python: dynamic keys in nested dictionary
i am using the django shell to try to create such a dictionary: {'SECTION ONE': {'Category One': [<Price: price element one>], 'Category Two': [<Price: price element one>, <Price: price element two>]}, 'SECTION TWO': {'Category One': [<Price: price element one>, <Price: price element two>]}} but this pieces of code: dict[section][category] = [x] change the "price element one" in "two" like the result below. dict = dict() for x in price.objects.all(): if section not in dict: dict[section] = { category: [x] } else: dict[section][category] = [x] dict[section][category].append(x) {'SECTION ONE': {'Category One': [<Price: price element two>], 'Category Two': [<Price: price element two>, <Price: price element two>]}, 'SECTION TWO': {'Category One': [<Price: price element two>, <Price: price element two>]}} how can you keep all the elements? -
How to share localhost port over local network
I created webpage on local server with django framework (python). I have acces to it under address http://localhost:8000/. Now I want to share it over local network. I try to do it with Windows firewall Inbound/outbound rules, but it seems either I do something wrong or it's not enough. -
Add filter Comment in Django
I have a problem with adding comments only spaces or enters. I don't know how filter that. If the user sends a normal comment it is transferred to the current page but if send only spaces or enters it is transferred to the URL comment. This my is code: models.py class Post(models.Model): """Post Model""" hash = models.UUIDField(default=uuid.uuid4, editable=False) title = models.CharField("Title", max_length=200) slug = models.SlugField(max_length=200, unique=True) author = models.ForeignKey( settings.AUTH_USER_MODEL, related_name="created_by", on_delete=models.CASCADE, default=current_user.CurrentUserMiddleware.get_current_user, ) category = TreeForeignKey(Category, verbose_name="Category", related_name="items", on_delete=models.CASCADE) tags = TaggableManager() image = models.ImageField("Image", upload_to=get_timestamp_path) content = RichTextUploadingField() create_at = models.DateTimeField(auto_now_add=True) def __str__(self): return f"{self.title}" def get_absolute_url(self): return reverse("main:post_detail", args=[self.slug]) def save(self, *args, **kwargs): if str(self.hash) not in self.slug: self.slug = f"{self.slug}-{self.hash}" super().save(*args, **kwargs) def get_comment(self): return self.comment_set.all() class Comment(models.Model): user = models.ForeignKey(User, verbose_name="User", on_delete=models.CASCADE) post = models.ForeignKey(Post, verbose_name="Post", on_delete=models.CASCADE) text = models.TextField(verbose_name="Comment") create_at = models.DateTimeField("Date of creating", auto_now=True) class Meta: verbose_name = "Comment" verbose_name_plural = "Comments" def __str__(self): return str(self.user) views.py class PostDetail(DetailView, MultipleObjectMixin): model = Post context_object_name = 'post' paginate_by = 10 template_name = 'main/post_detail.html' def get_context_data(self, **kwargs): comments = Comment.objects.filter(post=self.get_object()) context = super(PostDetail, self).get_context_data(object_list=comments, **kwargs) return context class AddComment(LoginRequiredMixin, CreateView): """Add Comment""" model = Post form_class = CommentForm def form_valid(self, form): form.instance.user = self.request.user form.instance.post_id … -
I want to make a simple face detection program with opencv and django
I found out how to get the webcam going in django and how to detect faces but i cant seem to find out how to combine both , any help would be appreciated face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml') def home(request): context = {} return render(request, "home.html", context) class VideoCamera(object): def __init__(self): self.video = cv2.VideoCapture(0) (self.grabbed, self.frame) = self.video.read() threading.Thread(target=self.update, args=()).start() def __del__(self): self.video.release() def get_frame(self): image = self.frame _, jpeg = cv2.imencode('.jpg', image) return jpeg.tobytes() def update(self): while True: (self.grabbed, self.frame) = self.video.read() def gen(camera): while True: frame = camera.get_frame() yield(b'--frame\r\n' b'Content-Type: image/jpeg\r\n\r\n' + frame + b'\r\n\r\n') def detection(camera): while True: _, img = gen(camera) gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) faces = face_cascade.detectMultiScale(gray, 1.1, 4) for (x, y, w, h) in faces: cv2.rectangle(img, (x, y), (x+w, y+h), (255, 0, 0), 2) k = cv2.waitKey(30) & 0xff if k==27: break return img this is how i tried to combine both @gzip.gzip_page def detectme(request): cam = VideoCamera() return StreamingHttpResponse(detect(cam), content_type="multipart/x-mixed- replace;boundary=frame") this is the home.html incase i messed something up in there {% load static %} {%load widget_tweaks %} <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>DJAGO_OPENCV</title> </head> <body> {% block body %} <h1></h1> <table> <tr> <td width="50%"> <img src="http://127.0.0.1:8000/detectme" style="width:1200px;" /> </td> <td width="50%"> … -
Django: count every same value in a object.filter
I have a CourseEmailPersonEven model that has this: class CourseEmailPersonEvent(models.Model): uid = models.UUIDField(primary_key=True, default=uuid.uuid4) action = models.CharField(max_length=32) is_filtered = models.BooleanField(default=False) user_agent = models.CharField(max_length=255, null=True, blank=True) ip = models.GenericIPAddressField(null=True, blank=True) ip_address = models.ForeignKey(Ip, on_delete=models.SET_NULL, null=True, blank=True) created_at = models.DateTimeField(auto_now_add=True) course_email_person = models.ForeignKey( CourseEmailPerson, related_name="events", on_delete=models.CASCADE ) In a viewset (retrieve), i'm getting CourseEmailPersonEvent's informations about one single account. But I wanna add the amount of same "ip_address" used from every accounts (even mine). And I don't know what to do: class UtilsViewSet(viewsets.ViewSet): @action(detail=False, methods=["get"], url_path="emails/events/ips") def emails_events_ip(self, request, *args, **kwargs): account = get_object_or_404(models.Account, uid=self.kwargs["account_pk"]) ips_events_count = ( models.CourseEmailPersonEvent.objects.filter( course_email_person__account=account, action="open", ip_address__isnull=False, ) .values("ip_address") .annotate(Count("ip_address")) .order_by("-ip_address__count") )............ Here the result I wanna have in final: (to add that "ip_address_used_all_account" line) [ { "ip_address": "4ead446d-28c5-4641-b44d-f1e3aa7d26f8", "ip_address__count": 1, "ip_address_used_all_account: 2, "is_filtered": false, "ip": "80.150.22.32", "country_code": "FR", "asn": "4b2698b3-bf86-4674-8d69-f4a038a8200a", "asn_name": "FREE SAS" } ] -
Show list of related objects in Django
I have an issue with displaying list of related articles in my Q&A DetailView. I have a field where user can connect an article to Q&A from admin site. What I want is to display these related article models.py class QA(models.Model): id = models.AutoField(primary_key=True) author = models.ForeignKey(settings.AUTH_USER_MODEL, blank=True, null=True, on_delete=models.SET_NULL) #settings INSTALLED_APPS title = models.CharField(max_length=750) category = models.ForeignKey(Category, on_delete = models.CASCADE, blank=True) related_articles = models.ManyToManyField(Article, default=None, blank=True, related_name='related_article') slug = models.SlugField(unique=True, blank=True) class Article(models.Model): id = models.AutoField(primary_key=True) author = models.ForeignKey(settings.AUTH_USER_MODEL, blank=True, null=True, on_delete=models.SET_NULL) #settings INSTALLED_APPS title = models.CharField(max_length=200) category = models.ForeignKey(Category, on_delete = models.CASCADE, blank=True) slug = models.SlugField(unique=True, blank=True) views.py class QADetailView(LoginRequiredMixin, DetailView): login_url = 'login' redirect_field_name = 'login' template_name = 'QADetailView.html' model = QA def get_context_data(self, **kwargs): categories = Category.objects.all() related_articles = Article.objects.filter(related_article=self.kwargs['id']) #No idea what to put in filter context['related_article'] = related_articles context['categories'] = categories return context QADetailView.html {% for article in related_article %} {{article.title}} {% endfor %} -
Saving dropdown menu selection as a cookie in Django
I'd like to save a user selection from a dropdown menu as a cookie. I've seen this question asked before but never fully in python. I wish to use these two cookies in running a simple piece of code so there is no need for a database to be used. Here is my current HTML code: <form role="form" method="post"> {% csrf_token %} <div class="form-group"> <label for="dog-names">Choose a dog name:</label> <select name="dog-names" id="dog-names" onchange="getSelectValue"> <option value="rigatoni">Rigatoni</option> <option value="dave">Dave</option> <option value="pumpernickel">Pumpernickel</option> <option value="reeses">Reeses</option> <option value="{{ current_name }}"> {{ current_name }}</option> </select> <br/> <label>Current dog: {{ current_name }}</label> </div> <button type="submit" value="Submit" class="btn btn-info">Submit</button> </form> Python def cookies_test(request): template_name = 'cookies.html' current_name = "Rigatoni" # default name if request.method == 'GET': if 'name' in request.COOKIES: current_name = request.COOKIES['name'] elif request.method == 'POST': current_name = request.POST.get('name') response = render(request, 'test.html', { "current_name": current_name }) response.set_cookie('name', current_name) return response The python works if I give a value to {{ current_name }} All I want is to be able to save a value from a dropdown menu in a variable so I can save it as a cookie Any advice at all would be appreciated :) -
Is there a more faster and efficient ways to send email in django so that the user does not have to wait the entire time the page loads
I am making a website where a user registers to book an instructor for a certain period of time according to a plan he chooses. There are three plans from which a user can choose namely 7days, 14days and 21days. After registering, the user needs to accept an agreement and then based on the plan he has chooses an expiration date is set from the day the user has accepted the agreement. Now after the user, has accepted the agreement, a copy of the agreement is sent to the user as well as the owners of the website through email. The owners want this system, where the copy of agreement is recieved by both the user and them. I am able to make this happen, and the site is working fine in the testing phase. So basically, two emails are sent after the user accepts and a Contract model is updated. Now, I have noticed that sending two emails takes a good of time, and the page keeps on loading until both the emails are sent, and then the redirects and all happens for the user. This waiting time may trigger some users to press back interrupting the smtp connection, … -
I want to created a rsa key put want to return single key at a time for models
def Create_Keys(): publicKey, privateKey = rsa.newkeys(512) For Models PublicKey = models.CharField(max_length=1000, blank=True, default=#From Function create Keys publicKey) PrivateKey = models.CharField(max_length=1500, blank=True, default=#From Function create Keys privateKey) To make Like this hidden_url = models.CharField(max_length=20, blank=True, default=utlis.create_random_codes()) -
DeleteView - confirm by Popup windows
I want to ask you, if you know, is here some point or solution how to do confirm delete item with DeleteView class by Popup bootstrap window. So I will not use template_name, but popup windows on current page. Thank you so much for everything...!!! -
Push rejected failed to compile python app
so i get this error when i try to deploy my master branch, i have set my requirements.txt, runtime.txt and Procfile but i still get this error -----> Building on the Heroku-20 stack -----> Using buildpack: heroku/python -----> Python app detected -----> Using Python version specified in runtime.txt ! Requested runtime (python - 3.9.7) is not available for this stack (heroku-20). ! Aborting. More info: https://devcenter.heroku.com/articles/python-support ! Push rejected, failed to compile Python app. ! Push failed my requirements.txt file asgiref==3.4.1 dj-database-url==0.5.0 Django==3.2.7 django-heroku==0.3.1 gunicorn==20.1.0 Pillow==8.4.0 psycopg2==2.9.2 python-decouple==3.5 pytz==2021.3 sqlparse==0.4.2 whitenoise==5.3.0 please help -
Using pymongo but still getting improperly configured database error
Having read through a lot of posts on the following error, I have understood that if you connect to your MongoDB database via pymongo, you should remove the DATABASES section in your settings.py file: settings.DATABASES is improperly configured. Please supply the ENGINE value. Check settings documentation for more details. I have removed it, but I still get this error. Nonetheless, I have tried the suggestions in related posts, to no avail... In my settings.py file, I have my database connection: DB_NAME = 'mongodb+srv://User2021:TestMe@cluster0.j9jz1.mongodb.net/test' In my views.py file, I have written a simple method, just to start off: @csrf_exempt def consumers(request): data = ConsumerModel.objects.all() if request.method == 'GET': print("consumers") serializer = ConsumerModelSerializer(data, many=True) return JsonResponse(serializer.data, safe=False) When I enter the http://localhost:8000/consumers/, I just wanna see that the python print statement writes consumers. What am I missing? -
unable to install MYSQLDB
sudo pip install MySQL-python Collecting MySQL-python Using cached MySQL-python-1.2.5.zip (108 kB) ERROR: Command errored out with exit status 1: command: /usr/bin/python3 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-4dq45q4u/MySQL-python/setup.py'"'"'; file='"'"'/tmp/pip-install-4dq45q4u/MySQL-python/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-install-4dq45q4u/MySQL-python/pip-egg-info cwd: /tmp/pip-install-4dq45q4u/MySQL-python/ Complete output (7 lines): Traceback (most recent call last): File "", line 1, in File "/tmp/pip-install-4dq45q4u/MySQL-python/setup.py", line 13, in from setup_posix import get_config File "/tmp/pip-install-4dq45q4u/MySQL-python/setup_posix.py", line 2, in from ConfigParser import SafeConfigParser ModuleNotFoundError: No module named 'ConfigParser' ---------------------------------------- ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output. neosoft@neosoft:~$ ^C -
Django admin missing models in one enviroment but not in other?
We have a weird problem with our development right now. Two of us are developing a softare using django. In my enviroment, I have full admin page with all the models and management options we have added. On our deployed test server, both me and him have the same options. However, on his own local server, running the exact same codebase that I do, these options are missing and he can only see handful of options. Any idea what might be causing this? It is making testing difficult.
