Django community: RSS
This page, updated regularly, aggregates Django Q&A from the Django community.
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Django model Foreign key serialization
In a django model, I want to custom the natural foreign key for the model to be serialized as it would be directly with the serializers.serialize function (and not just an array or tuple). Then, what prevents me doing this? class Player(models.Model): def natural_key(self): player = serializers.serialize('json',[self],use_natural_foreign_keys=True) return json.loads(player)[0] Is there a better way to return a json model for a foreign key of this form: { model: "play.player", pk: "72026f4d-3c74-4edd-9f88-5ab8330218b1", fields: {…} } -
Django filter - is DateTimeField filled
to my model I added a simply DateTimeField: expired = models.DateTimeField(default=None) . The value of the field can be either None or a Datetime. I'd like to filter for objects where the expired is filled with any datum, however I'm struggling to find the right filter. I think I tried all the combinations of filter / exclude and expired__isnull=True / expired=None, but I never get back the exact number. What's the right way to filter if the field has a DateTime in it, or not? Django: 1.11.16 Thanks. -
Django Middleware does not modify request in tests
I am trying to create test class for my custom middleware. The project is using Django REST framework. Middleware class works fine when server is running, but when I run test it behaves not quite as I would expect it to do. Maybe I misunderstood something, as I am quite new to testing in Django. my_middleware.py: class FX: a = False b = None c = '' def __init__(self) -> None: pass def __str__(self): return 'fx ok' class MyMiddleware(object): def __init__(self, get_response): self.get_response = get_response def __call__(self, request): request.fx = FX() response = self.get_response(request) print('done') return response views.py: class TestView(APIView): def get(self, request, format=None): print('View ok') print('FX: ', request.fx) return Response({'result':'ok'}) tests.py: class TestMyMiddleware(APITestCase): @classmethod def setUpTestData(cls): pass def setUp(self): pass def test_fx(self): response = self.client.get(reverse('TestView'), content_type="application/json") request = response.request self.assertTrue(hasattr(request, 'fx')) The code above actually runs the middleware. It prints "done" form the middleware call, then prints 'View ok' and also prints FX instance. However request.fx is not available in the test_fx method, thus giving assertion failure: self.assertTrue(hasattr(request, 'fx')) AssertionError: False is not true Any idea what I might be doing wrong? -
Django-import-export update_or_create with UniqueConstraint
I have this Profile model together with a constraint similar to a unique_together: class Profile(models.Model): #Personal Information firstname = models.CharField(max_length=200) lastname = models.CharField(max_length=200, blank=True, null=True) email = models.EmailField(max_length=200) investor_type = models.CharField(max_length=200, choices=investor_type_choices) class Meta: constraints = [ models.UniqueConstraint(fields=['email', 'investor_type'], name='email and investor_type') ] I want to implement a function update_or_create on the Profile which uses the email and investor_type as the argument for searching for the object. I tried adding this to my ProfileResource: def before_import_row(self, row, row_number=None, **kwargs): try: self.email = row["email"] except Exception as e: self.email = None try: self.investor_type = row["investor_type"] except Exception as e: self.investor_type = None def after_import_instance(self, instance, new, row_number=None, **kwargs): """ Create any missing Profile entries prior to importing rows. """ try: # print(self.isEmailValid(self.email), file=sys.stderr) if self.email and self.investor_type: profile, created = Profile.objects.update_or_create( email=self.email, investor_type=self.investor_type, defaults={ 'firstname': 'helloo', 'lastname': 'wooorld', }) except Exception as e: print(e, file=sys.stderr) but adding a non-existing Profile object: through django-import-export: is already giving out an error, Profile with this Email and Investor type already exists despite it not existing in the first place. -
Why i got this error on Django, When i run it on browser. I'm using the latest Django version and python 3.10.2. Please any fix for begginer like me
My name is Abdi from Ethiopia. My english is not very well, I was stuck on this error. [1]: https://i.stack.imgur.com/SVEdE.png [2]: https://i.stack.imgur.com/Q6RGF.png [3]: https://i.stack.imgur.com/sWPv5.png [4]: https://i.stack.imgur.com/9qJZM.png I am begginer for django.Why i got this error on Django,When i run it on browser. I'm using the latest Django version and python 3.10.2. Please! any fix for begginer like me. -
How to update Wagtail static files, they stopped working when I used STATIC_DIRS
I'm trying to update Wagtail from version 2.8 to the latest 2.15. Also, I had to update from Django 3.0 to 3.2. However, I noticed that when I use STATICFILES_DIRS, the style of the Wagtail admin (2.15) gets distorted as if it's using the files from the old version (2.8). PROJECT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) BASE_DIR = os.path.dirname(PROJECT_DIR) ... STATICFILES_FINDERS = [ 'django.contrib.staticfiles.finders.FileSystemFinder', 'django.contrib.staticfiles.finders.AppDirectoriesFinder', ] STATICFILES_DIRS = [os.path.join(PROJECT_DIR, 'static'),] STATICFILES_STORAGE = 'django.contrib.staticfiles.storage.ManifestStaticFilesStorage' STATIC_ROOT = os.path.join(BASE_DIR, 'static') STATIC_URL = '/static/' MEDIA_ROOT = os.path.join(BASE_DIR, 'media') MEDIA_URL = '/media/' Conversely, when I delete the STATICFILES_DIRS, the style on the Wagtail admin gets fixed, but the all the style on my project its gone. I already checked and it's not the cache. I tried that several times, different browsers, etc. -
Django application global variables in database best praxis
I am a new in django. I storage global application variables inside settings environment folder. But now i need store variables inside Database because i want changes them from django admin. My way to do this: Create model class in django core, where define two variable app_name - list of application and data-JSON. But i think this is not best praxis. Since it may be difficult to use the GIT -
Split unit test units into a number of files in Django
I have a project built using Django and I use unittest library to do some tests, I write all the tests in tests.py file and then I run these tests with the command: ./manage.py test app Everything works without a problem, but the tests.py file gets bigger and more complex over time, is there a simple way to split this file into a number of files so that each file contains only one type of tests? -
django rest how to post comments in a post blog
I would like to know how to delete comments in a board using an url like this: DELETE /api/boards/{board_id}/comments/{comment_id} Current I can list all comments and post a comment using this: GET /api/boards/{board_id}/comments # will get all comments POST /api/boards/{board_id}/comments # will create a comment. I dont know how to get a single comment and dont know how to delete a comment using the extra action below this is my current view: class BoardViewSet(ModelViewSet): queryset = Board.objects.exclude(deleted=True) serializer_class = BoardSerializerList permission_classes = [permissions.IsAuthenticatedOrReadOnly, IsOwnerOrReadOnly] def destroy(self, request: Request, *args, **kwargs) -> Response: board = self.get_object() if not board.deleted: board.deleted = True board.save() return Response(status=status.HTTP_204_NO_CONTENT) return Response(status=status.HTTP_400_BAD_REQUEST) def get_serializer_class(self): if self.action == 'retrieve': return BoardSerializerRetrieve return super().get_serializer_class() @action(detail=True, methods=['get', 'post', 'delete'], serializer_class=CommentSerializer) def comments(self, request, pk=None): if self.request.method == 'GET': board = self.get_object() comments = board.comment_set.all() serializer = CommentSerializer(comments, many=True) return Response(serializer.data) if self.request.method == 'POST': board = self.get_object() serializer = CommentSerializer(data=request.data) if serializer.is_valid(): user = serializer.data['user'] text = serializer.data['text'] Comment.objects.create(board=board, user=user, text=text) return Response(status=status.HTTP_201_CREATED) these are my models: class Board(models.Model): id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False) name = models.CharField(max_length=200, blank=False, null=False) description = models.TextField(max_length=1000) share_with_company = models.BooleanField() share_list = ArrayField(models.CharField(max_length=15), null=True, blank=True) last_update = models.DateTimeField(auto_now=True) owner = models.ForeignKey('auth.User', related_name='boards', on_delete=models.CASCADE) deleted … -
how to ship a Django app as a docker image?
I would like to package and ship a Django web app as a Docker image. When I do a docker-compose up, I see a tree hierarchy in Docker desktop containers and works as expected when I navigate to http://localhost:85 django-dashboard-volt |___appseed_app |___nginx If I save and load the image, I see the following in the Docker desktop containers and the web application does not work: django-dashboard-volt_appseed-app nginx Here's how I save and load the images: docker save django-dashboard-volt_appseed-app:latest nginx:latest | gzip > django.tar.gz docker load --input django.tar.gz Here's the Dockerfile: FROM python:3.9 COPY . . ADD test . ADD data . # set environment variables ENV PYTHONDONTWRITEBYTECODE 1 ENV PYTHONUNBUFFERED 1 ENV PYTHONPATH /test ENV APP_USER=xxxx ENV APP_HOME=/home/$APP_USER # install python dependencies #RUN pip install --trusted-host pypi.org --trusted-host pypi.python.org --trusted-host files.pythonhosted.org --upgrade pip RUN pip install --trusted-host pypi.org --trusted-host pypi.python.org --trusted-host files.pythonhosted.org --no-cache-dir -r requirements.txt RUN tar xvzf gurobi9.5.0_linux64.tar.gz ENV GUROBI_HOME /gurobi950/linux64 RUN cd /gurobi950/linux64 && python setup.py install RUN rm gurobi9.5.0_linux64.tar.gz RUN echo "TOKENSERVER=xxxx" > /gurobi.lic RUN groupadd -r $APP_USER && \ useradd -r -g $APP_USER -d $APP_HOME -s /sbin/nologin -c "Docker image user" $APP_USER ENV TZ 'America/Los_Angeles' RUN echo $TZ > /etc/timezone && apt-get update && \ apt-get … -
cant get profile images to display with django
I am working through a basic django upload image tutorial and I have become stuck. I am trying to let a user upload a file, store it in in a folder, and then save the address to that image in the db. This part all seems to be working. Then I try and have a simple page to display all images to make sure its working and the img tag in the HTML keeps having a src of "unknown". I am unsure of what exactly the problem is because there are no errors thrown anywhere. Views.py from django.http.response import HttpResponseRedirect from django.shortcuts import render from django.views.generic.edit import CreateView from django.views.generic import ListView from .models import UserProfile # Create your views here. class CreateProfileView(CreateView): template_name = "profiles/create_profile.html" model = UserProfile fields = "__all__" success_url = "/profiles" class ProfilesView(ListView): model = UserProfile template_name = "profiles/user-profiles.html" context_object_name = "profiles" Models.py from django.db import models # Create your models here. class UserProfile(models.Model): image = models.ImageField(upload_to="image") User-Profiles.html {% load static %} <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>User Profiles</title> </head> <body> <ul> {% for profile in profiles %} <li> <img src="{{ profile.url }}"> </li> {% endfor %} … -
Does anyone know of a plugin to do dynamic calculations in the django formset?
Does anyone know if there is a jquery plug-in that can do calculations for a django formset (it is a dynamic form, it changes the id of each field per row each time the add button is clicked) -
How to copy the data in old col to new col with only unique values?
I'm trying to create a new unique field called last_name_unique. I need to copy the data from last_name to last_name_unique. The new field can be nullable so we can add null for the repeated values. For example, if there are two last names with value "Junior", under the last_name_unique there will be one value "Junior" and then null for the other "Junior" value. from django.db import models class Person(models.Model): first_name = models.CharField(max_length=30) last_name = models.CharField(max_length=30) Any idea how to achieve this would be appreciated. -
Django - How to set ordering on ManyToMany field queryset
I have following models: class Hashtag(models.Model): ... created = models.DateTimeField(auto_now_add=True) ... class Tweet(models.Model): ... hashtags = models.ManyToManyField( to='Hashtag', through='TweetHashtag', through_fields=('tweet', 'hashtag'), ) ... class TweetHashtag(models.Model): comment = models.ForeignKey( to='Tweet', on_delete=models.CASCADE, ) hashtag = models.ForeignKey( to='Hashtag', on_delete=models.CASCADE, related_name="tweets" ) created = models.DateTimeField(auto_now_add=True) My problem is when I get a Tweet, I want to get hashtags order by created. tweet = Tweet.objects.get(id=1) hashtags = list(tweet.hashtags.all()) When I check hashtags, I see the hashtags are in incorrect ordering. I want to get tweet.hashtags order by created (created of TweetHashtag) Is there anyway? I have one idea but I don't know how to do that. The idea is to override relation manager of hashtags in Tweet model. Is there any way? -
How to add markers to leaflet map in an ajax call? leaflet Cannot read properties of undefined (reading 'addLayer') Layer.js:52
I am trying to add markers to my leaflet map in an ajax call, but I am getting an error. I'm able to add markers to the map in the console, but don't know why I can't in the ajax call. Any help would be appreciated. Ajax Call // get reference to map var map = window['leafletmapid_location-map']; $('#id_sub_areas').change(function (event) { $.ajax({ type: 'GET', url: 'my_url', success: function (response) { L.marker([40.383061, -111.773658]).addTo(map) }; }); }); When I trigger the ajax call I get the error message- leaflet Cannot read properties of undefined (reading 'addLayer') Layer.js:52 However if I load the page I can add a marker to the map with the following code in the console. Console Code var map = window['leafletmapid_location-map']; L.marker([40.383061, -111.773658]).addTo(map); -
Whitenoise Not Working when DEBUG = FALSE - Django - Hosting Static Files
I am running a Django website and it's about to go into production. I am now at the point where I need to set DEBUG = False in my settings.py file. I am getting the typical 500 errors because I have static files that are being hosted locally. I am working on getting Whitenoise to work to host my static files so I can move on with DEBUG = False. I have followed a lot of documentation and a lot of tutorials and think all of my configurations are all set but I am still getting the same error. When DEBUG = False I am still getting 500 errors on my production pages that have static files. Also when I inspect any static files on the page when DEBUG = True the URL has not changed at all. I am posting all of my configuration below in hopes that there is a simple mistake I made that I have been continuously skipped over but Whitenoise doesn't seem to be working and there seems to be no different from the way it was before now as Whitenoise is "implemented". I have run python manage.py collect static I have run pip install … -
not getting right URL for entering specific project
I have my site set up, that every user can join many teams, but each team can have many projects, and each project can have many tasks, and I am listing all projects in a team, but i want to use the href to get to the specific project, which is displayed as a task. but i cannot direct it correctly. Here is my models.py class Note(models.Model): title = models.CharField(max_length=55) content = models.TextField() date = models.DateTimeField(auto_now_add=True) def __str__(self): return self.title class Checklist(models.Model): title = models.CharField(max_length=55) slug = models.SlugField(max_length=500, unique=True, blank=True) check_completed = models.BooleanField(default=False) notes = models.ManyToManyField(Note, blank=True) def save(self, *args, **kwargs): if not self.slug: self.slug = slugify(self.title) super(Checklist, self).save(*args, **kwargs) def get_url(self): return reverse('checklists', kwargs={ 'slug':self.slug }) def __str__(self): return self.title @property def last_comment(self): return self.notes.latest("date") class Task(models.Model): title = models.CharField(max_length=55, null=True, blank=True) slug = models.SlugField(max_length=500, unique=True, blank=True) task_completed = models.BooleanField(default=False) description = models.TextField(default="Task description") start_date = models.DateTimeField() due_date = models.DateTimeField() checklist = models.ForeignKey(Checklist, blank=True, null=True, on_delete=CASCADE) def save(self, *args, **kwargs): if not self.slug: self.slug = slugify(self.title) super(Task, self).save(*args, **kwargs) def get_url(self): return reverse('tasks', kwargs={ 'slug':self.slug }) def __str__(self): return self.title @property def num_task_completed(self): return self.task_completed.count() class Project(models.Model): project_manager = models.ForeignKey(Profile, on_delete=CASCADE) title = models.CharField(max_length=55, null=True, blank=True) developers = models.ManyToManyField(Profile, … -
Django how to pass custom error message in class based views
I need to be show custom error message for invalid forms. I don't know how to do it in class based views. here is my class based views: class EditPatient(UpdateView): model = Patient form_class = PatientUpdateFrom template_name = 'hospital/edit-patient.html' def form_valid(self, form): error_message = None if form.is_valid(): name = self.request.POST["patient_name"] email = self.request.POST["phone"] if len(name) > 20: error_message = 'maximum 20 character allowed in name' if len(phone) > 20: error_message = 'maximum 15 character allowed in phone' """ #I tried this but didn't work def get_context_data(self, **kwargs): context = super(EditPatient,self).get_context_data(**kwargs) context['error_message'] = error_message return context """ if not error_message: messages.add_message(self.request, messages.INFO, 'Patient Sucessfully Updated') form.save() return redirect('hospital:edit-patient',self.object.slug) -
Django Rest Framework :How to serialize many to many field
I have my models Certificates and Suppliers and Suppliers has many to many relationship with certificates class Certificates(models.Model): name = models.CharField(max_length=500, null=False) description = models.CharField(max_length=500, null=False) image_url = models.CharField(max_length=500, null=False) def __str__(self): return f'{self.name}' class Suppliers(models.Model): name = models.CharField(max_length=500, null=False) location = models.CharField(max_length=500, null=False) longitude = models.CharField(max_length=500, null=True) latitude = models.CharField(max_length=500, null=True) certificates = models.ManyToManyField(Certificates, null=True) bio = RichTextField(blank=True, null=True) environmental_info = RichTextField(blank=True, null=True) social_info = RichTextField(blank=True, null=True) governance_info = RichTextField(blank=True, null=True) def __str__(self): return f'{self.name}' This is my Serializers: class CertificatesSerializer(serializers.ModelSerializer): class Meta: model = Certificates fields = '__all__' class SuppliersSerializer(serializers.ModelSerializer): certificates = CertificatesSerializer() class Meta: model = Suppliers fields = ('id', 'name', 'certificates') and this is my view @api_view(['GET']) def supplier_response_list(request): suppliers_list = Suppliers.objects.all() serializer = SuppliersSerializer(suppliers_list, many=True) return Response(serializer.data) am getting this error: AttributeError: Got AttributeError when attempting to get a value for field description on serializer CertificatesSerializer. The serializer field might be named incorrectly and not match any attribute or key on the ManyRelatedManager instance. Original exception text was: 'ManyRelatedManager' object has no attribute 'description'. -
Checking message value in Django template
I am working with a Google ReCaptcha on a Django site and would like to check the value of the error messages. If the value is 'Invalid reCAPTCHA. Please try again.' then I would like to show an error message under the ReCaptcha. However, the way that I have this set up is not currently working. <div id="g-recaptcha-error"> {% if messages %} {% for message in messages %} {% if message is 'Invalid reCAPTCHA. Please try again.' %} <span style="color:red;">{{ message }}</span> {% endif %} {% endfor %} {% endif %} </div> How do I check the actual value of the recaptcha message? There could possibly be additional errors so I don't want this to show up if the value is different. When I include this below it shows 'Invalid reCAPTCHA. Please try again. test' So I know the message is correct. {% for message in messages %} <p>{{ message }} test</p> {% endfor %} -
How do I connect django-tinymce with the javascript from TinyMCE?
I have successfully added TinyMCE to my site using the django-tinymce library in the fields in my admin. Looking through a lot of posts on here, there seems to be a utility in adding some javascript, too, but the installation guide does not mention javascript. I have attempted downloading TinyMCE js from the official site and added it in my static/js folder, and then added this to my settings.py: STATIC_URL = '/static/' TINYMCE_JS_URL = os.path.join(STATIC_URL, "js/tinymce/tinymce.min.js") But it did not change anything, so I suspect it does not work. After looking through tons of documentation, posts here and Youtube guides, I have not come to a conclusion. So I have two questions: What is the benefit of adding javascript from TinyMCE to my site - besides the django-tinymce plugin? How do I add it to my site given I already have the django-tinymce installed? EDIT: I actually already know one utility that I want from the js. That is, I want to be able to not include image dimensions in the HTML output of the TinyMCE forms of my admin. Apparently this is edited in the JS - unless the option can be edited elsewhere? -
Django Rest Framework modify field value depending on condition
as a Python, Django and DRF newbie I have a very basic question when building a Rest API for a test project. I am sure the experts here can assist me on this as it is really more than simple (but I run into the wrong direction): Below is the core extract of a very simple API endpoint. When the endpoint is called (GET) I want to return the "Description" value as it is stored in the database (this is clear of course). But if the field "ISO2CODE" has a value (for example "de") I want to change the "Description" value in the API to a different output (e.g. German). Means the API will not return the value in the database but a manipulated value. How should I do this. What is the common way to manage such a (simple) requirement (add a condition - how? in the model definition?). Thank you for any help on this. class Territory(models.Model): ISO2Code = models.CharField(max_length=2) Description = models.CharField(max_length=128) class Meta: ordering = ['pk'] class TerritorySerializer(serializers.ModelSerializer): class Meta: model = Territory fields = ['id', 'ISO2Code','Description'] class TerritoryViewSet(ModelViewSet): queryset = Territory.objects.all() serializer_class = TerritorySerializer def get_serializer_context(self): return {'request': self.request} -
How to handle conflicting basic auth from NGINX reverse proxy with JWT auth from Django?
we have a standard Django web app running behind a reverse proxy. I want to setup a two layer authentification : one from the nginx reverse proxy to shield the application (presently a HTTP Basic authentication -yes we plan to upgrade to something stronger like SSL client certificate or smartcards-), and one at the application level However we are currently running into a issue because the HTTP Basic Authorization header is conflicting with the Django Authorization header The problem arises because the JWT auth from Django requires us to fill the "Authorization" header with the token while NGINX uses another type of authentication. I'm looking for the best way to solve this problem and have the following questions : is it possible to require Django to use an alternative HTTP header to carry its authentication token (instead of "Authorization") or, conversely, is it possible to configure our nginx to use an alternative header for the HTTP Basic authentication (but it seems unlikely as it is done at the browser level) or to require the nginx to do the header translation : i.e. converting back and forth header before pushing them to the Django app. or, even better, can we configure … -
Django CORS Headers works when allowing all, but not for a specified origin
I have a React frontend (hosted at http://localhost:3000/) that is trying to send JWT refresh tokens via HttpOnly Cookies to a Django REST API (hosted at http://localhost:8000/, but tunnelled using ngrok to an https address). I am using django-cors-headers to deal with the cross-origin aspect of this. However, no matter what I do, I cannot seem to get this to work (despite days of research). Any help would be greatly appreciated :D I think I am addressing the endpoint correctly (i.e. https://ngrokapiurl/api/token/refresh/) and I have put 'corsheaders.middleware.CorsMiddleware', at the top of the middleware block. The CORS errors go away when I specify CORS_ORIGIN_ALLOW_ALL = True. However, not only do I understand that security-wise this is not ideal, but it also does not work when I set CORS_ALLOW_CREDENTIALS = True to allow the withCredentials: True part of my axios request to send over the HttpOnly cookie containing the refresh token. Therefore, I remove the CORS_ORIGIN_ALLOW_ALL = True and set CORS_ALLOWED_ORIGINS = [ "http://localhost:3000", ] to specify the allowed origin. However, it is at this point that nothing seems to work. Please help me fix this - I am very new to all of this! The error I get is: error In … -
Django - Count every installment in a balance every month
I made a program to control bills and monthly installments. I don't know if the way I made my Model is wrong, but I achieved to make the month we are now + months to pay. Here's a picture of 2 month installment, I want to appear in 2 months, but only appear in the last (Feb) Now I want in the view to show in balance the installments and its months (i.e: Jan and Feb), but I'm stuck. Can anyone help me, please ? Model.py class Balance(models.Model): account = models.ForeignKey(Account, null=True, on_delete=models.SET_NULL) value = models.FloatField(null=True) installment = models.IntegerField(null=True, default=0) #How many installments installment_value = models.FloatField(null=True, default=0) #Value of it months = models.IntegerField(null=True, default=0) #From a range (1, 12) calculates the last month def save(self, *args, **kwargs): self.months = (int(datetime.now().strftime("%m")) + int(self.installment))-1 if self.months > 12: self.months = int(self.months) - 12 super().save(*args, **kwargs) View.py #BALANCE def balance(request, pk): name = Client.objects.all().get(user=request.user) account = Account.objects.all().get(id=pk) balance = account.balance_set.all() ctx = {'account': account, 'name': name, 'balance': balance, 'months': {'Jan': 1, 'Feb': 2, 'Mar': 3, 'Apr': 4, 'May': 5, 'Jun': 6, 'Jul': 7, 'Aug': 8, 'Sep': 9, 'Oct': 10, 'Nov': 11, 'Dec': 12}} #Months dict is for view, it goes in a for …
