Django community: RSS
This page, updated regularly, aggregates Django Q&A from the Django community.
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Django Apache setup - forbidden Error 403
Since it did not work on the first time, I created a fresh new venv for my django project. my folder structure looks like this: btw I used the Django/Apache Setup guide from digitalOcean (https://www.digitalocean.com/community/tutorials/how-to-serve-django-applications-with-apache-and-mod_wsgi-on-ubuntu-16-04) /home/pi/myproject/myprojectenv (this is where my env is located) /home/pi/myproject/myprojectenv/myproject/myproject (this is where the settings.py is located) I added this to the settings.py file (I use a pi, I only serve locally) ALLOWED_HOSTS = ['localhost', '127.0.0.1'] and at the bottom STATIC_ROOT = os.path.join(BASE_DIR, 'static/') my /etc/apache2/sites-available/000-default.conf looks like this: <VirtualHost *:80> #for django Alias /static /home/pi/myproject/myprojectenv/myproject <Directory /home/pi/myproject/myprojectenv/myproject/static> Require all granted </Directory> <Directory /home/pi/myproject/myprojectenv/myproject> <Files wsgi.py> Require all granted </Files> </Directory> WSGIDaemonProcess myproject python-home=/home/pi/myproject/myprojectenv python-path=/home/pi/myproject WSGIProcessGroup myproject WSGIScriptAlias / /home/pi/myproject/myprojectenv/myproject/myproject/wsgi.py ServerAdmin webmaster@localhost DocumentRoot /var/www/html ErrorLog ${APACHE_LOG_DIR}/error.log CustomLog ${APACHE_LOG_DIR}/access.log combined </VirtualHost> when I go to /static in the browser I get a http 403 forbidden Error. What am I doing wrong? -
how to check if input for barcode is valid using django?
I made an app to generate barcodes using python-barcode library (Python)(django framework) and there's two fields 1 - to let the user input the number that will used for generate the barcode 2 - options to let the user select which type of barcode he wants for now everything work fine it's generating the barcodes but some of the barcodes have its specific types of inputs like 12 digits or 8 digits and so on so how to check the inputs if its valid for that type of barcode or not?, then show error messages if it's wrong, or succes message if it generated fine I know I can use messages form django itself but how I can implement it with checking function? for views.py from sre_constants import SUCCESS from django.http import HttpResponse from django.shortcuts import redirect, render import barcode from barcode.writer import ImageWriter import tempfile from django.contrib import messages def index(request): context = {'barcode_types':barcode.PROVIDED_BARCODES} return render(request, 'index.html',context) def generate_barcode(request): inputs = request.POST['inputs'] types = request.POST['types'] barcode_class = barcode.get_barcode_class(types) file = tempfile.NamedTemporaryFile() code = barcode_class(inputs,writer=ImageWriter()) file_path = code.save(file.name) response = HttpResponse(open(file_path,'rb').read(), headers={'Content-Type': 'image/png','Content-Disposition': 'attachment; filename="'+inputs+'.png"'}) return response -
Django API feed linking to 'URL' instead of name
I am currently feeding an API to my django web page and a key value inside the first API contains a URL to another API My goal is to get the key: name under my second API - 'speciality' and not the url itself. html <div class="container-fluid p-2 bg-primary text-white text-center"> <h1>Users</h1> <a style="background: black;" href="http://localhost:8000/api/">Check out our API here</a> </div> <div class="container mt-5"> <table class="table"> <thead> <tr> <th>Id</th> <th>Name</th> <th>Lastname</th> <th>Email</th> <th>Hiring Date</th> <th>Phone</th> <th>Job</th> <th>Speciality</th> <th>Salary</th> </tr> </thead> <tbody> {% for user in users %} <tr> <td>{{ user.id }}</td> <td>{{ user.name }}</td> <td>{{ user.last_name }}</td> <td>{{ user.email }}</td> <td>{{ user.hire_date }}</td> <td>{{ user.phone_number }}</td> <td>{{ user.job }}</td> <td>{{ user.speciality }}</td> <td>{{ user.salary }}</td> </tr> {% endfor %} views.py def home(request): response = requests.get('http://127.0.0.1:8000/api/workers/') worker = response.json() return render(request, "home.html", {'users': worker}) -
Django RestFramework api error ImproperlyConfigured at /api/ using HyperlinkedModelSerializer
hi friends I'm learning Django-Rest-framework, i try t build one small API but i'm Facing Some Error i tried to solve but i can't so kindly help to fix this Error i mention below code and error you can able to see here Error ImproperlyConfigured at /api/stream_list/ Could not resolve URL for hyperlinked relationship using view name "steamplatform-detail". You may have failed to include the related model in your API, or incorrectly configured the `lookup_field` attribute on this field. This is views.py i just create basic view code from rest_framework.decorators import api_view,APIView from rest_framework.response import Response from watchlist.models import Watchlist,SteamPlatform from watchlist.serializers import WatchlistSerializers, SteamPlatformSerializers # Create your views here. class Movie_list(APIView): def get(self,request): Watchlists = Watchlist.objects.all() serializer = WatchlistSerializers(Watchlists,many=True) return Response(serializer.data) def post(self,request): serializer = WatchlistSerializers(data=request.data) if serializer.is_valid(): serializer.save() return Response(serializer.data) else: return Response(serializer.errors) class Movie_details(APIView): def get(self,request, pk): try: movie = Watchlist.objects.get(pk=pk) serializers = WatchlistSerializers(movie) return Response(serializers.data) except Exception as e: data ={ "statuscode":401, "message":e } return Response(data) def put(self,request,pk): movie = Watchlist.objects.get(pk=pk) serializer = WatchlistSerializers(movie, data=request.data) if serializer.is_valid(): serializer.save() return Response(serializer.data) else: return Response(serializer.errors) def delete(self,request,pk): movie = Watchlist.objects.get(pk=pk) movie.delete() return Response() class Steam_list(APIView): def get(self,request): Steams = SteamPlatform.objects.all() serializer = SteamPlatformSerializers(Steams, many=True, context={'request': None}) return Response(serializer.data) … -
Django REST multiple permission class not working
I have two permission class. IsAuthorGroup will check if the user belongs from the author group and IsOwnerOrReadOnly will restrict the user to performing post and delete if he is not the object's owner. But the problem is anyone from IsAuthorGroup performing post and delete request event he isn't own of the object. How to restrict anyone from IsAuthorGroup performing post and delete request if he isn't owner of the object? here is my code: class IsAuthorGroup(permissions.BasePermission): def has_permission(self, request, view): if request.user and request.user.groups.filter(name='AuthorGroup'): return True return False class IsOwnerOrReadOnly(permissions.BasePermission): def has_object_permission(self, request, view, obj): if request.method in permissions.SAFE_METHODS: return True # Write permissions are only allowed to the owner of the blog. return obj.author == request.user or request.user.is_superuser class BlogViewSet(viewsets.ModelViewSet): queryset = Blog.objects.all() serializer_class = BlogSerializer pagination_class = BlogPagination lookup_field = 'blog_slug' permission_classes = [IsOwnerOrReadOnly & IsAuthorGroup] -
Django CSS files not loading correctly in the application
In my Django application, I see that the code that is loaded is different from the code written in CSS files. What is the source of this change? How can it be resolved? -
How to set session with Django Rest Framework
For my Django project, I'm implementing RestAPI using DRF. To preserve some variables needed by two APIs, I wish to use a Django session. However, when I called Api2 after setting the session on Api1, it was None. Has anybody encountered it before? Thank you very much for your assistance! Here is an example of my API code: from rest_framework import viewsets class BaseViewSet(viewsets.ViewSet): @action(methods="post") def lookup(self, request): request.session['abc'] = 1 request.session.modified = True request.session.save() print(request.session.session_key) # p02sr0qlnzntagfkf9ekm8f8km4w82t4 return = {} @action(methods="post") def login(self, request): print(request.session.session_key) # None, it should be key p02sr0qlnzntagfkf9ekm8f8km4w82t4 print(request.session.get('abc') # None data = {} -
Django - Hide legend in Highcharts from Python script
I would like your help for a little project I'm doing with Django and Highcharts.js. My target: hide legend in Highcharts's chart from my script views.py From my views.py file I have managed to be able to correctly plot different types of charts. But I can't hide the legend from views.py. To give an example I have borrowed the code from this django-highcharts-example tutorial in Github. Here is the example code to replicate the behaviour of the script: views.py def ticket_class_view_3(request): dataset = Passenger.objects \ .values('ticket_class') \ .annotate(survived_count=Count('ticket_class', filter=Q(survived=True)), not_survived_count=Count('ticket_class', filter=Q(survived=False))) \ .order_by('ticket_class') categories = list() survived_series_data = list() not_survived_series_data = list() for entry in dataset: categories.append('%s Class' % entry['ticket_class']) survived_series_data.append(entry['survived_count']) not_survived_series_data.append(entry['not_survived_count']) survived_series = { 'name': 'Survived', 'data': survived_series_data, 'color': 'green' } not_survived_series = { 'name': 'Survived', 'data': not_survived_series_data, 'color': 'red', 'showInLegend': "false" } chart = { 'chart': {'type': 'column'}, 'title': {'text': 'Titanic Survivors by Ticket Class'}, 'xAxis': {'categories': categories}, 'series': [survived_series, not_survived_series], 'plotOptions': {'column': {'showInLegend': 'false'}} } dump = json.dumps(chart) return render(request, 'index.html', {'chart': dump}) The html where I import Highcharts.js and create the charts. ticket_class_3.html <!doctype html> <html> <head> <meta charset="utf-8"> <title>Django Highcharts Example</title> </head> <body> <a href="{% url 'home' %}">Return to homepage</a> <div id="container"></div> <script src="https://code.highcharts.com/highcharts.src.js"></script> <script> … -
Django Rest Framework Nested Representation Not Showing
My models.py: class Brand(models.Model): name = models.CharField(max_length=100, unique=True, verbose_name=_("brand name"), help_text=_("format: required, unique, max-100")) def __str__(self): return self.name class ProductOrService(models.Model): web_id = models.CharField(max_length=50, unique=True, verbose_name=_("product web id"), help_text=_("format: required, unique")) slug = models.SlugField(max_length=255, null=False, blank=False, verbose_name=_("product/service url"), help_text=_("format: required, letters, numbers, underscore or hyphen")) name = models.CharField(max_length=250, null=False, blank=False, verbose_name=_("product/service name"), help_text=_("format: required, max_length=250")) seller = models.ForeignKey(User, related_name="product_or_service", on_delete=models.PROTECT) description = models.TextField(verbose_name=_("product description"), help_text=_("format: required")) category = TreeManyToManyField(Category) is_visible = models.BooleanField(default=True, verbose_name=_("product/service visibility"), help_text=_("format: true->product is visiible")) is_blocked = models.BooleanField(default=False, verbose_name=_("product/service blocked"), help_text=_("format: true->product is blocked")) created_at = models.DateTimeField(auto_now_add=True, editable=False, verbose_name=_("date product/service created"), help_text=_("format: Y-m-d H:M:S")) updated_at = models.DateTimeField(auto_now=True, verbose_name=_("date product/service last updated"), help_text=_("format: Y-m-d H:M:S")) is_product = models.BooleanField(default=True, verbose_name=_("Is this product?"), help_text=_("format: true->product, flase->service")) users_wishlist = models.ManyToManyField(User, related_name='user_wishlist', blank=True) reported_by = models.ManyToManyField(User, related_name='reported_product', blank=True) def __str__(self): return self.name class Product(models.Model): brand = models.ForeignKey(Brand, related_name="brand_products", on_delete=models.PROTECT) show_price = models.DecimalField(max_digits=7, decimal_places=2, verbose_name=_("Cost of Product shown on the site."), help_text=_("format: max price = 99999.99")) available_units = models.IntegerField(null=False, default=0, verbose_name=_("available units")) sold_units = models.IntegerField(null=False, default=0, verbose_name=_("sold units")) product_or_service = models.OneToOneField(ProductOrService, related_name='product', on_delete=models.CASCADE, null=True) def __str__(self): return self.product_or_service.name class Service(models.Model): price_min = models.DecimalField(null=True, blank=True, max_digits=7, decimal_places=2, verbose_name=_("Minimum Cost of Service"), help_text=_("format: max price = 99999.99")) price_max = models.DecimalField(null=True, blank=True, max_digits=7, decimal_places=2, verbose_name=_("Maximum Cost of … -
Django problem if language string not in url
My Django site returns 404 if a language string is not attached to the URL as : https://web-***-uw.a.run.app However, when the language string is set, the page loads just fine. https://web-***-uw.a.run.app/en/ I am using Django i18n translation this way: urlpatterns = i18n_patterns( path("i18n/", include("django.conf.urls.i18n")), path('jsi18n/', JavaScriptCatalog.as_view(), name='javascript-catalog'), path("", include("core.routes.urls", namespace="resumes"), name="resumes"), path("admin/", admin.site.urls), ) and my setting files language settings: TIME_ZONE = "Asia/Seoul" USE_I18N = True USE_L10N = True USE_TZ = True # Translate files LOCALE_PATHS = [ os.path.join(BASE_DIR, "locale"), ] MIDDLEWARE = [ "django.middleware.security.SecurityMiddleware", "django.contrib.sessions.middleware.SessionMiddleware", # Cors Headers App "corsheaders.middleware.CorsMiddleware", "django.middleware.common.CommonMiddleware", # End Cors Headers App "django.middleware.locale.LocaleMiddleware", "django.middleware.csrf.CsrfViewMiddleware", "django.contrib.auth.middleware.AuthenticationMiddleware", "django.contrib.messages.middleware.MessageMiddleware", "django.middleware.clickjacking.XFrameOptionsMiddleware", ] I must be doing something wrong. What is it? -
Cannot add dynos on Heroku (usingDjango app)
Struggling to get my app available on Heroku. Which is strange because it used to work. When querying the error ("heroku logs --tail), this is what I get "at=error code=H14 desc="No web processes running" method=GET path="/"" I searched the problem and looks like I am not running any web dynos. I therefore, went with the following $ heroku ps:scale web=1 Unfortunately, I then came across the following error message: "Scaling dynos... ! ! Couldn't find that process type (web)." When checking with "heroku ps",it does say No dynos on "AppName" The Heroku webiste advises that this is related to the Procfile, which mine seem to be correct: Procfile web:gunicorn mysite.wsgi I have removed the buildpacks as suggested using heroku buildpacks:clear I retried to add some dynos, but still no joice. Would anyone be able to know tell me what I am doing wrong here? Did I miss a step? -
How to create and download a zip file with a list of images?
Here I have list of images with their url. I want to create a zip and store all the images inside zip. After extract the zip file I want the images inside folder. What's happening with the below code is: it creates zip and downloads but when I extract the zip file, there are so many folders like zipfoldername/home/user/my_project/img and only inside img folder there are files. I want is only zipfoldername/img. Also inside img folder files doesn't have images it has image_url only. I want to store image from that image url in the extracted file. image_list = ['https://example.com/media/file1.jpg', 'https://example.com/media/file2.jpg'] folder = os.path.join(settings.BASE_DIR, "imgs") if not os.path.exists(folder): os.mkdir(folder) for i, imgfile in enumerate(image_list): with open(os.path.join(folder, str(i)), 'wb+') as f: f.write(imgfile) response = HttpResponse(content_type='application/zip') s = StringIO.StringIO() zip_file = zipfile.ZipFile(s, "w") folder_files = os.listdir(folder) for filename in folder_files: file = os.path.join(folder, filename) zip_file.write(file) zip_file.close() resp = HttpResponse(s.getvalue(), content_type = "application/x-zip-compressed") resp['Content-Disposition'] = 'attachment; filename=gik.zip' return resp -
Django - Trouble authenticating with a 2 form view (one is a login screen)
I'm attempting to create a login screen that features a search bar at the top. When attempting to log in, I receive this error: "'CustomAuthenticationForm' object has no attribute 'login'". I followed the advice in this post here. Here's my html: <form class="text-2xl" method="POST"> {% csrf_token %} {{ forms.login|crispy }} <button value="login" name="action" class="text-white flex text-xl mx-auto mt-4 max-h-10 stone-bg stone-bevel px-2 pt-1 drop-shadow-md hover:text-amber-200" type="submit"> Login </button> </form> Here's a link to the gist for my MultiFormsView class here. Here's my views: class CustomLoginView(MultiFormsView): form_classes = { 'login': CustomAuthenticationForm, 'search': SearchForm, } success_url = reverse_lazy('home') template_name = 'login.html' def get_context_data(self, **kwargs): context = super(CustomLoginView, self).get_context_data(**kwargs) context['search'] = SearchForm context['login'] = CustomAuthenticationForm return context def login_form_valid(self, form): return form.login(self.request, redirect_url=self.get_success_url()) Here's my forms: class CustomAuthenticationForm(AuthenticationForm): username = forms.CharField( label = "", widget = forms.TextInput(attrs={ 'class': "form-control text-lg h-8 rounded-full px-2 pt-1 border-2 border-black my-1", 'placeholder': "Username *", 'size': "35", }) ) password = forms.CharField( label = "", widget = forms.PasswordInput(attrs={ 'class': "form-control text-lg h-8 rounded-full px-2 pt-1 border-2 border-black my-1", 'placeholder': "Password *", 'size': "35", }) ) class Meta(AuthenticationForm): model = CustomUser fields = ('username', 'password',) After looking into the inherited classes of AuthenticationForm, I didn't find a ".login()" method. … -
How do i add a display filter on queryset received on page with filtering options on a siderbar?
This is view function-based view for the page q=Q() context={'p_qtn':None,'h_qtn':None,'hu_qtn':None} p_qtn=request.GET.get('check1',None) h_qtn=request.GET.get('check3',None) hu_qtn=request.GET.get('check2',None) if p_qtn: q = q & Q(PQtn="None") context['p_qtn']=True if h_qtn: q = q & Q(HQtn="None") context['h_qtn']=True if hu_qtn: q = q & Q(HuQtn="None") context['hu_qtn']=True vessel=request.GET['vessel'] query_args={ f'{vessel}__exact':True} questions = ( Qtion.objects .exclude(q) .filter(**query_args) ) context['questions']=questions return render(request,'ques.html',context) class code: class Qtion(models.Model): Chapter=models.CharField(max_length=3) Stext=models.CharField(max_length=100) Ftext=models.CharField(max_length=400) Qno=models.CharField(max_length=10) HQtn=models.CharField(max_length=30) PQtn=models.CharField(max_length=30) HuQtn=models.CharField(max_length=30) Qtype=models.CharField(max_length=10) Chemical=models.BooleanField() LNG=models.BooleanField() LPG=models.BooleanField() Oil=models.BooleanField() Conditional=models.BooleanField() I want to add display filter by chapter on a siderbar. Code for the page: {% for question in questions %} <div class="question-div"> <div class="top-bar"> <div class="q-code">{{question.Qno}}</div> <div class="short-text">{{question.Stext}}</div> </div> <div class="middle-bar"> <span>{{question.Ftext}}</span> </div> <div class="bottom-bar"> {% if p_qtn %} {% if question.PQtn == 'Graduated' %} <div class="res"> <div class="res-d">Procedure Response</div> <div class="res-dr"><input type="range" id="grad" min="0" max="3" step="1"></div> <div class="res-dr"><span class="trans-text">Move slider..</span></div> </div> {% elif question.PQtn == 'Binary' %} <div class="res"> <div class="res-d">Procedure Response</div> <div class="res-dr"><input type="range" id="bin" min="0" max="1" step="1"></div> <div class="res-dr"><span class="trans-text">Move slider..</span></div> </div> {% endif %} {% endif %} {% if h_qtn %} {% if question.HQtn == 'Graduated' %} <div class="res"> <div class="res-d">Hardware Response</div> <div class="res-dr"><input type="range" id="grad" min="0" max="3" step="1"></div> <div class="res-dr"><span class="trans-text">Move slider..</span></div> </div> {% elif question.HQtn == 'Binary' %} <div class="res"> <div class="res-d">Hardware Response</div> <div class="res-dr"><input type="range" … -
Selecting one row from Foreign Key in Django
I have the following models in Django: class Kingdom(models.Model) : class Meta: ordering = ('kingdom_name', ) kingdom_name = models.CharField(max_length=128, null=True, blank=True) def __str__(self) : return self.kingdom_name class Phylum_Clade(models.Model) : class Meta: ordering = ('phylum_name', ) phylum_name = models.CharField(max_length=128, null=True, blank=True) kingdom = models.ForeignKey(Kingdom, on_delete=models.CASCADE, null=True) def __str__(self) : return self.phylum_name class Classe_Clade(models.Model) : class Meta: ordering = ('classe_name', ) classe_name = models.CharField(max_length=128, blank=True, null=True) phylum_clade = models.ForeignKey(Phylum_Clade, on_delete=models.CASCADE, null=True) kingdom = models.ForeignKey(Kingdom, on_delete=models.CASCADE, null=True) def __str__(self) : return self.classe_name class Ordre(models.Model) : class Meta: ordering = ('ordre_name', ) ordre_name = models.CharField(max_length=128, blank=True, null=True) classe_clade = models.ForeignKey(Classe_Clade, on_delete=models.CASCADE, null=True) phylum_clade = models.ForeignKey(Phylum_Clade, on_delete=models.CASCADE, null=True) kingdom = models.ForeignKey(Kingdom, on_delete=models.CASCADE, null=True) def __str__(self) : return self.ordre_name class Famille(models.Model) : class Meta: ordering = ('famille_name', ) famille_name = models.CharField(max_length=128, blank=True, null=True) ordre = models.ForeignKey(Ordre, on_delete=models.CASCADE, null=True) classe_clade = models.ForeignKey(Classe_Clade, on_delete=models.CASCADE, null=True) phylum_clade = models.ForeignKey(Phylum_Clade, on_delete=models.CASCADE, null=True) kingdom = models.ForeignKey(Kingdom, on_delete=models.CASCADE, null=True) def __str__(self) : return self.famille_name class Binomiale(models.Model) : class Meta: ordering = ('binomiale', ) nom = models.CharField(max_length=128, blank=True) name = models.CharField(max_length=128, blank=True) binomiale = models.CharField(max_length=128, blank=True) famille = models.ForeignKey(Famille, related_name='famille_names', on_delete=models.CASCADE, null=True) ordre = models.ForeignKey(Ordre, related_name='ordre_names', on_delete=models.CASCADE, null=True) classe_clade = models.ForeignKey(Classe_Clade, related_name='classe_names', on_delete=models.CASCADE, null=True) phylum_clade = models.ForeignKey(Phylum_Clade, related_name='phylum_names', on_delete=models.CASCADE, null=True) kingdom = models.ForeignKey(Kingdom, … -
Djano UpdateView not rendering modelForm
I have a model assesment which is related to other models. i have created a UpdateView, Form based on the model assesment. The problem now is when I render the form in a template, no field is displayed except the submit button, so there is nothing to update. i only see a submit button with no form fields Here designs below models.py class assessment(models.Model): className = models.ForeignKey(all_class, on_delete=models.SET_NULL, null=True) student = models.ForeignKey(students, on_delete=models.SET_NULL, null=True) subjectName = models.ForeignKey(allsubject, on_delete=models.SET_NULL, null=True) firstCa = models.IntegerField(default=0) secondCa = models.IntegerField(default=0) exam = models.IntegerField(default=0) section = models.CharField(max_length=100, choices=section_choices) term = models.CharField(max_length=100 , choices=term_choices) session = models.CharField(max_length=1000) date = models.DateTimeField(auto_now_add=True) def __str__(self): return str(self.className) class Meta: ordering = ['className'] views.py class assessmentEntry(UpdateView): model = assessment fields = '__all__' Form_class = AssessmentForm template_name = 'result/assessmentScore.html' success_url = reverse_lazy('result:index') Forms.py class AssessmentForm(forms.ModelForm): class Meta: model = assessment fields = ['className','student','subjectName','firstCa','secondCa','exam'] urls.py path('assessmentScores/<int:pk>/', assessmentEntry.as_view(), name='assessmentScores'), template(assessmentScore.html) <div > <form method="POST"> {% csrf_token %} {{ Form.as_p}} <button type="submit" class="px-2 text-white bg-indigo-500 rounded-md focus:bg-indigo-600 focus:outline-none"> Save Scores </button> </form> </div> Please what exactly am I doing wrong? and how do I correct it. -
Django Validation - Use Parent field validator and have subclass provide values
I have an abstract Parent model, and the subclasses inherit a field that has a validator. The validator takes in a list, and I would like each child to provide it's own list to validate against. I have something like this. Is there a way to do this? Am I over complicating it? app1.py @deconstrutible class ValidateInList(): def __init__(self, valid_items): self.valid_items = valid_items def __call__(self, value): if value not in self.valid_items: raise ValidationError() class Parent(models.Model): field = models.CharField(max_length=20, validators=[ValidateInList(something)]) class Meta: abstract = True app2.py class Child1(Parent): child_valid_items = [x,y,z] # would take the value of 'something' in Parent class class Child2(Parent): child_valid_items = [a,b,c] # would take the value of 'something' in Parent class -
How to save wallet address to user model in Django?
I have run into a bit of a hiccup here. I have a script which gets the user's Metamask wallet address which works fine. The problem arises when I need to save that wallet address to the user model in this field: ethereum_address = models.CharField(max_length=42, blank=True, null=True) I have a Javascript that fetches the wallet when the Connect button is pressed: function connect() { ethereum .request({ method: 'eth_requestAccounts' }) .then((account)=> saveAccount(account)) .catch((error) => { if (error.code === 4001) { // EIP-1193 userRejectedRequest error console.log('Please connect to MetaMask.'); } else { console.error(error); } }); } function saveAccount(account) { console.log(account); $.ajax({ url: '/connect-metamask/', type: 'POST', data: { 'account': account, 'csrfmiddlewaretoken': '{{ csrf_token }}' }, }); } In the views.py I have this when I have a POST request: def connect_metamask(request): user = request.user if request.method == "POST": user.ethereum_address = request.POST.get("account") user.save() ......... But when I look at the database the ethereum_address is Null . How do I make this work? -
ImportError: cannot import name 'path' from 'django'
I am trying to learn django/make my first web app with the platform. I am trying to set up my first url page, but the path import won't work (Import Error). The import code I used (which is pretty straightforward...) from django import path I am using a virtual environment venv, and have python v 3.10 and django 4.0.5. Any pointers? The only info I could find on this is from 4 years ago, and the issue was a older version of django, which does not seem to be the case here. -
Django displays app.Model.None for attribute with a Foreign Key relationship
Trying to display the attributes of a model (Model2) accessed via a ManytoManyField in Model1. However, Model2 has a ForeignKey field of another model (Model3). That is, I want to display the notes about a song (SongNote model - Model2) where the song title is stored in the Song model (Model3). The SongNote model is a ManytoManyField attribute in a Note model (Model1). wow. this is why computers read code... models.py: # Model3 class Song(models.Model): title = models.CharField(max_length=255, null=True) ... # Model2 class SongNote(models.Model): TYPE_CHOICES = ( ('R', 'Review',), ('W', 'Work on',), ) type = models.CharField( max_length=140, choices=TYPE_CHOICES, default='W', ) song = models.ForeignKey(Song, null=True, on_delete=models.CASCADE) ... def __str__(self): song_name = str(self.type) + " - " + str(self.song) return song_name # Model1 class Note(models.Model): date = models.DateField() student = models.ForeignKey( CustomUser, on_delete=models.CASCADE, ) song_note = models.ManyToManyField(SongNote) views.py: class NotesDetailView(DetailView): model = Note template_name = "note_detail.html" template.html <div class="card"> <div class="card-header"> <span class="text-muted">{{ object.student }}</span> &middot; <span class="font-weight-bold">{{ object.date }} </span> </div> <div class="card-body"> <h5 class="card-title">Songs</h5> <p class="card-text">{{ object.song_note }}</p> # this displays as "[R/W] - [app].SongNote.None" </div> </div> I have tried various for loops in the template. Attempted to you QuerySets in the view.py. And have searched the internet (this post … -
Django conditional subquery slicing with another subquery value
I am looking for a way to conditionally slice the result of a subquery based on another subquery value. Lets' Say i have the models Author and Books: Author: name = models.CharField(max_length=100) birthday= ... Book: author: models.ForeignKey('Author') title: models.CharField(max_length=100) copies_sold: models.CharField(max_length=50) publish_date: .... Now here is what i want to query: 1.All books by an author 2.The best selling n books out of all books by an author (let's say for this example, if an author has less then 3 books return all of them, if the author has between 3 and 6 books return n-1 of the best selling books, if more then 10 give me the 6 best selling books, the excact logic here is irrelevant it just has to be able to destinct between cases of how many books the author has I gave this a try without yet the conditional cases with the following approach: books = Books.objects.all() included_books_qobj = Q() all_books_by_author_qobj = Q() books_by_author_subquery = Books.objects.filter(author_id=OuterRef('id')) .order_by('copies_sold').values('id').annotate(books_count=Count('*')) included_books_qobj.add(Q(id__in=Subquery(books_by_author_subquery.values('id')[:Subquery(scores_by_athlete_subquery.values('scores_count'), output_field=IntegerField())])), Q.OR) all_books_by_author_qobj.add(Q(id__in=Subquery(books_by_author_subquery.values('id'))), Q.OR) best_n_books_by_author = books.filter(included_books_qobj) all_books_by_author = books.filter(all_books_by_author_qobj) Now this fails with: TypeError: '>=' not supported between instances of 'Subquery' and 'int' This makes sense as a subquery cannot be evaluated on its own before … -
Django - redirect to home after login when session times out
If I'm on foo.html and click on a link to bar.html but my session has timed out, I'm taken to the login page. After successful authentication, I am redirected to bar.html. I want it to always redirect to home.html. My settings.py has LOGIN_REDIRECT_URL = 'home'. I am using the django auth and have not overridden the login view. My login.html file contains: <form method="post"> {% csrf_token %} {{ form|crispy }} <a class="button secondaryAction" href="{% url 'password_reset' %}">Forgot Password?</a> <button type="submit" class="btn btn-secondary mt-2 pl-4">Log In</button> </form> -
How to create a request object in Django with a session and cookies of an authenticated user?
In a Django view I can use the cookies from the incoming request and pass it into another request as means of authentication and make requests to other views in the project using the requests module. def someview(request): cookies = request.COOKIES csrftoken = cookies['csrftoken'] baseurl = settings.BASEURL url = f"{baseurl}/api/csvuploads/" payload = {...} resp = requests.post( url, data=payload, cookies=cookies, headers={'X-CSRFToken': csrftoken}, ) I need to have a management command running periodically (as a cronjob) to have a similar logic, the problem is that the management command will run in a container in Kuberentes so I need to create an user, a request, authenticate, and login so I can make more requests. How can I recreate the same request with session, cookies and everything if the request is not coming from a view? My first attempt was to use RequestFactory from the test framework but I couldn't figure out how to create the request with the session and cookies from the authentication. def handle(self, *args, **options): factory = RequestFactory() request = factory.post( "/admin/login", {'username': username, 'password': password} ) user = authenticate(request, username=username, password=password) request.user = user -
how can i get divide time to 1hrs time interval using django?
I wrote a model that adds time limits it is assumed that it will be large limits (eg 9 am - 6 pm) class Schedule(models.Model): WEEKDAYS = ( (1, 'Monday'), (2, 'Tuesday'), (3, 'Wednesday'), (4, 'Thursday'), (5, 'Friday'), (6, 'Saturday'), (7, 'Sunday'), ) worker = models.ForeignKey(User, on_delete=models.CASCADE) weekday = models.IntegerField(choices=WEEKDAYS) from_hour = models.TimeField() to_hour = models.TimeField() now i need it to be automatically broken down into small time intervals, it is needed in order to implement the booking model, it looks like this class Appointment(models.Model): customer = models.ForeignKey(User, on_delete=models.CASCADE) worker = models.ForeignKey(User, on_delete=models.CASCADE) location = models.ForeignKey(Location, on_delete=models.CASCADE) created_at = models.DateTimeField(auto_now_add=True, editable=False) from_hour = to_hour = in (from_hour,to_hour) should be this small interval it should look like a calendar so that the user can choose a convenient time from the available, I think in django there should be some tool that will break a large time interval Thanks -
Accessing production postgres database with django
I have a django site hosted using elastic beanstalk, with a RDS postgres database I'd like to be able query this database and write some code to analyse aspects of the database. I can do this by directly accessing the database and writing postgres queries but I wondered if there was a way to do this using python/django - I can do it when I am accessing a local database but I cant work out how to make a local python kernel connect to the production database
