Django community: Django Q&A RSS
This page, updated regularly, aggregates Django Q&A from the Django community.
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How to iterate queryset dictionary in django template
This is my dictionary i get from view: {'questions_in_topic': <QuerySet [{'question_id__description': 'Describe your most significant leadership experience'}, {'questi on_id__description': 'Which kind of leader are you?'}]>} How do I show individual questions in django template? The view is below: def get_question_from_topic(request): if request.method == "GET": questions_in_topic = QuestionTopic.objects.filter(topic_id=request.GET['topicId']).values('question_id__description').order_by('question_id__description') print(questions_in_topic) context = { 'questions_in_topic': questions_in_topic } print(context) return render(request, 'recruiter/add_question_library.html', context) return render(request, 'recruiter/add_question_library.html', context) -
django.contrib.gis.geos.error.GEOSException: Could not parse version info string
I installed goal on Mac as follows: brew install -v gdal However when I run my program that I was able to successfully run on Linux, it gives me the following errors: File "/usr/local/Cellar/python@2/2.7.15_1/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module __import__(name) File "/Users/tesor/Desktop/test/api-server/api-server/lib/python2.7/site-packages/django/contrib/gis/admin/__init__.py", line 5, in <module> from django.contrib.gis.admin.options import GeoModelAdmin, OSMGeoAdmin File "/Users/tesor/Desktop/test/api-server/api-server/lib/python2.7/site-packages/django/contrib/gis/admin/options.py", line 2, in <module> from django.contrib.gis.admin.widgets import OpenLayersWidget File "/Users/tesor/Desktop/test/api-server/api-server/lib/python2.7/site-packages/django/contrib/gis/admin/widgets.py", line 4, in <module> from django.contrib.gis.geos import GEOSException, GEOSGeometry File "/Users/tesor/Desktop/test/api-server/api-server/lib/python2.7/site-packages/django/contrib/gis/geos/__init__.py", line 18, in <module> HAS_GEOS = geos_version_info()['version'] >= '3.3.0' File "/Users/tesor/Desktop/test/api-server/api-server/lib/python2.7/site-packages/django/contrib/gis/geos/libgeos.py", line 196, in geos_version_info raise GEOSException('Could not parse version info string "%s"' % ver) django.contrib.gis.geos.error.GEOSException: Could not parse version info string "3.6.3-CAPI-1.10.3 80c13047" I cannot figure out what's happening. The version of python is Python 2.7.15. I understand that the issue is related to the version of GDAL, but how can I solve this problem? I need gdal 1.10.1. -
Internal Server Error in django and uwsgi + nginx
I deployed a Django application on server. I used nginx and uwsgi as web server. I didn't have any problem first, but I see "Internal Server Error" when I add rest_framework to project. I guess It has problem with rest_framework but I don't know its reason. I think you should know when I remove rest_framework from project, It's working. I should say when I run project with python manage.py runserver, It's working. I guess there are any problems with nginx or uwsgi. I put my settings below: settings.py import os BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) # SECURITY WARNING: keep the secret key used in production secret! SECRET_KEY = 'emh6)d=!db$6dunhkdo-2wz*r^w**@)w8((@1*$prrgr9m8un7' # SECURITY WARNING: don't run with debug turned on in production! DEBUG = False ALLOWED_HOSTS = ["*"] # Application definition INSTALLED_APPS = [ 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'django.contrib.sites', 'tagulous', 'django_render_partial', 'ckeditor', 'ckeditor_uploader', 'allauth', 'allauth.account', 'allauth.socialaccount', # 'easy_thumbnails', # 'filer', 'mptt', # 'anymail', 'core.apps.CoreConfig', 'blog.apps.BlogConfig', 'sitebuilder.apps.SitebuilderConfig', 'rest_framework', ] MIDDLEWARE = [ 'django.middleware.security.SecurityMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware', ] ROOT_URLCONF = 'boofeh.urls' TEMPLATES = [ { 'BACKEND': 'django.template.backends.django.DjangoTemplates', 'DIRS': [os.path.join(BASE_DIR, 'sitebuilder','templates'), os.path.join(BASE_DIR, 'sitebuilder','templates', 'allauth')], 'APP_DIRS': True, 'OPTIONS': { 'context_processors': [ 'django.template.context_processors.debug', 'django.template.context_processors.request', 'django.contrib.auth.context_processors.auth', 'django.contrib.messages.context_processors.messages', ], }, }, ] WSGI_APPLICATION = 'boofeh.wsgi.application' # ... -
Can I somehow use the endpoint override django.settings
In the settings, I have several variables, these are strings. Can I somehow rewrite them with the help of some endpoint in jango? My thanks! -
Define abstact django models field
I need to create an abstract Django model and I want to enforce all models-inheritors redefine that field. I've tried that but got an exception: from django.db import models class AbstractField(models.Field): description = "Abstract Field" def __init__(self): raise NotImplementedError("You have to redefine your field in model.") class MyAbstractModel(models.Model): id = models.AutoField(primary_key=True) redefine_me_please = AbstractField() class Meta: abstract = True class MyNotAbstractModel(MyAbstractModel): redefine_me_please = models.CharField(verbose_name='Name', max_length=255) An exception was NotImplementedError on makemigrations action. Any idea how to imitate abstract field? -
Difference in foreign key lookup through object.fk.id and object.fk_id
I have not found this question on SO. Is there a speed difference between the following two variants of doing foreign key lookup in django's object model? I only need the foreign key. class A(models.Model): x = models.PositiveIntegerField(null=True) class B(models.Model): a = models.ForeignKey(A, null=True, on_delete=models.CASCADE) y = models.PositiveIntegerField(null=True) b = b.objects.last() Which is faster or are they the same? b.a_id b.a.id edit: Actually I think I can answer it myself... the second variant should be slower since it creates the whole object from the db, right? -
View class dispatch() doesn't find method?
I'm trying to use single url with two views. I found an example of that on official django documentation. I have something like this: class DetailOrderView(View): """Combines form and detail parts into one and in darkness binds them.""" # import pdb; pdb.set_trace() def get(self, request, *args, **kwargs): view = DisplayDetailOrderView.as_view() return view(self, *args, **kwargs) def post(self, request, *args, **kwargs): view = FormDetailOrderView.as_view() return view(self, *args, **kwargs) And in urls.py I refer to DetailOrderView.as_view() However, when I try to run this I get this error: .... lib/python3.6/site-packages/django/views/generic/base.py", line 84, in dispatch if request.method.lower() in self.http_method_names: AttributeError: 'DetailOrderView' object has no attribute 'method' Which basically means when dispatch(self, request, *args, **kwargs) tries to call request.method.lower() it finds that request has no attribute method! Which is kinda strange right? request should be defined in as_view() right? This is pretty much c/p from the official documentation and it should work so I must be doing something stupid.. -
Why do I get a ForeignKey constraint violation
As can be seen below, I have 2 models connected via an intermediary model to form a ManyToMany relationship. The problem is that, when I delete a Tender object in get this error. update or delete on table "tender_details_tender" violates foreign key constraint "user_account_company_tender_id_984ea78c_fk_tender_de" on table "user_account_companyprofile_assignedTenders" DETAIL: Key (id)=(1) is still referenced from table "user_account_companyprofile_assignedTenders". I thought by adding on_delete=models.CASCADE in the ForeighKeys (i.e. in the intermediary model) would solve this problem, but apparently not. class CompanyProfile(models.Model): assignedTenders = models.ManyToManyField(Tender, through='UsersTenders', related_name='UserCompanies') # connects users to the tenders they match. class UsersTenders(models.Model): user = models.ForeignKey(CompanyProfile, on_delete=models.CASCADE, related_name='userTenderLink') tender = models.ForeignKey(Tender, on_delete=models.CASCADE, related_name='userTenderLink') sent = models.BooleanField(default=False, blank=False) class Meta: unique_together = ("user", "tender") class Tender(models.Model): tenderCategory = models.ManyToManyField(Category, blank=False) #this field holds the tender category, e.g. construction, engineering, human resources etc. tenderProvince = models.ManyToManyField(Province, blank=False) #this is the province the tender was a How can I resolve this problem. -
Why I'm getting an error while creating a new model class in django?
I have read similar questions but couldn't come to a solution or a conclusion about it. I got this error while creating a new model class in the same app as well as creating a new model class in a new app. The error django.db.utils.IntegrityError: UNIQUE constraint failed: auth_permission.content_type_id, auth_permission.codename my models.py from django.db import models from django.contrib.auth.models import User CHOICES = (('Earned Leave','Earned Leave'),('Casual Leave','Casual Leave'),('Sick Leave','Sick Leave'),('Paid Leave','Paid Leave')) STATUS_CHOICES = (('0', 'Rejected'),('1', 'Accepted'),) MANAGER_CHOICES = (('0001_manager', '0001_manager'),('0002_manager', '0002_manager')) class Leave(models.Model): employee_ID = models.CharField(max_length = 20) name = models.CharField(max_length = 50) user = models.ForeignKey(User, on_delete = models.CASCADE, null =True) def __str__(self): return self.name class B(models.Model): state = models.CharField(max_length=50) -
Adding a domain to a django webapp running on digital ocean
I have a Django Web App that is currently live on digital ocean with an IP address say w.x.y.z, I have also bought a domain name say example.com, how can i add this to my app so that, when i go to example.com , I get to my website which currently is only accessible through the IP. Any advice is appreciated. I'm new to this -
JWT authentication between Django and ReactJS
I am currently using Django (2.1) to build an API, and I have added djangorestframework-jwt to manage JWT. Here is the configuration: JWT_AUTH = { 'JWT_SECRET_KEY': SECRET_KEY, 'JWT_VERIFY': True, 'JWT_VERIFY_EXPIRATION': True, 'JWT_EXPIRATION_DELTA': datetime.timedelta(days=14), 'JWT_ALLOW_REFRESH': True, 'JWT_REFRESH_EXPIRATION_DELTA': datetime.timedelta(days=7), 'JWT_AUTH_HEADER_PREFIX': 'Bearer', } and the endpoints: urlpatterns = [ path('auth/get-token/', obtain_jwt_token), path('auth/refresh-token/', refresh_jwt_token), ] The client is built with ReactJS. I use an axios instance as a client to communicate with the API. This instance is created that way : import axios from 'axios' import jwt_decode from 'jwt-decode' // eslint-disable-line import { signOut } from '../actions/authActions' const signOutOn401 = (statusCode) => { if (statusCode === 401) { signOut() window.location = '/signin' } } const client = axios.create({ baseURL: process.env.API_URL, headers: {'Authorization': ''} }) /* * This interceptor is used for: * - adding Authorization header if JWT available * - refreshing JWT to keep user authenticated */ client.interceptors.request.use((config) => { if (window.localStorage.getItem('token')) { let token = window.localStorage.getItem('token') // Calculate time difference in days // between now and token expiration date const t = ((jwt_decode(token).exp * 1000) - Date.now()) / 1000 / 60 / 60 / 24 // Refresh the token if the time difference is // smaller than 13 days (original token is ... -
Django formset with no initial data
I am a Django rookie and I am developing a small app to register time (duration) and quantity of activities per user per day. Sort of like a work log. My problem is this: My “add entry” view displays and updates old records rather than adding new records to the db. I need a view to add new records, not replace old ones. From searching around and from the #django IRC channel, I understand that the formset-way by default draws on old data rather than setting the client up for adding new data. I have, however, not found anything about how to avoid this behaviour and have the client provide a blank form for "appending new data" rather than "editing existing data". My deadline is drawing really close and all help is greatly appreciated. Here are the relevant code snippets: From models.py class Activity(models.Model): name = models.CharField(max_length=200) description = models.TextField() class Workday(models.Model): entrydate = models.DateField() worker = models.ForeignKey(User, on_delete=models.CASCADE) class Entry(models.Model): duration = models.DurationField() quantity = models.PositiveIntegerField() activity = models.ForeignKey(Activity, on_delete=models.CASCADE) workday = models.ForeignKey(Workday, on_delete=models.CASCADE) From forms.py class EntryForm(ModelForm): activity = ModelChoiceField(queryset=Activity.objects.order_by('name'), initial=0) class Meta: model = Entry fields = ['activity', 'duration', 'quantity', ] class WorkdayForm(ModelForm): class Meta: model = ... -
ValueError at /studentform/ ModelForm has no model class specified
I am getting an error while running the following form. please help me to fix the error. models.py from django.db import models from django.contrib.auth.models import User # Create your models here. class student(models.Model): name = models.CharField(max_length=50) emailid = models.EmailField(max_length=60) marks = models.CharField(max_length=11) date = models.DateTimeField() def __str__(self): return self.name forms.py from django import forms from .models import * class student_form(forms.ModelForm): name = forms.CharField(widget=forms.TextInput(), required=True, max_length=100) emailid = forms.EmailField(widget=forms.EmailField(), required=True) class Meta(): model = student fields = ['name','emailiid'] I have tried many things but no solution. please look at in this code and help to sort this out. so confusing for me as i am new to Django. -
How can i get my application properties running on linux on a dashboard?
I am new to django and trying to create a django dashboard for our server monitoring purpose. Here i need to show following things 1. Who is logged in currently on centos running machine. 2. Who is accessing which file currently. 3. When any file is changed and who changed it. -
Annotate Min value of filtered related Model
I have a Track Model and these tracks have a weekly rank in different charts (charttype) class Track(models.Model): id = models.CharField('Unique ID', max_length=100, primary_key=True) title = models.CharField('Track title', max_length=100) ... class Rank(models.Model): id = models.AutoField(primary_key=True) trackid = models.ForeignKey(Track, related_name='rank') pos = models.PositiveIntegerField("Position", blank=True, null=True) charttype= models.CharField(max_length=10, choices=CHARTTYPE) ... I first query for a specific charttype: track_list_top100 = Track.objects.filter(rank__charttype='total') after that I want to annotate this QuerySet with the highest position for that track for that specific charttype: track_list_top100 = track_list_top100.annotate(highestpos=Min('rank__pos')) But what I get is the highestposition for all charts combined. In other words the filter that I've set in the first query filter(rank__charttype='total') is not used in the annotation. Any ideas how to do this? Thanks in advance. -
How to add a like button in django 2!!(i need help asap)
I am trying to add a like button on my website in django2,but wherever i read,the code seems to be very complex and is ususally done in django<2.0,can someone help me please? -
Django xhtml2pdf <pdf:toc /> Table of Contents Styling
I am working on Django to render a html page to PDF using xhtml2pdf module. From the documentation of xhtml2pdf, it mentioned that I can use <pdf:toc /> to automatically generate table of contents (TOC) with the heading in the html files and use the following styles to style the TOC: pdftoc { color: #666; } pdftoc.pdftoclevel0 { font-weight: bold; margin-top: 0.5em; } pdftoc.pdftoclevel1 { margin-left: 1em; } pdftoc.pdftoclevel2 { margin-left: 2em; font-style: italic; } It does work. However, I don't see the method of generating the TOC with leading dots. The output of my generated PDF look something like this: TOC with no leading dots - From pisa But the actual result that I am looking for is something like this: TOC with leading dots - From html2pdf Anyone know how to make the TOC leading dots? Thanks in advance. -
Django serves CSS files and Favicon but not images from root static when debug =false or in production
I have been working on a personal profile site and have an image for my cover page saved in my root static folder. I can see the cover image fine in the browser when debug is true but when debug is false or I am in production the file is a 404 error, no where to be found. The root directory also has a CSS file (style.css) and a favicon.ico which both show up fine when debug is set to false or I am in production, it is just the image that doesn't show/work. I also have a background image in the "Polls" app that shows up fine in both debug=false and production. Here is an image of my file directory: Directory Here is my settings.py which, based on Django documentation and Heroku deployment documentation, should be configured correctly: import os import dj_database_url # Build paths inside the project like this: os.path.join(BASE_DIR, ...) BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) # Quick-start development settings - unsuitable for production # See https://docs.djangoproject.com/en/1.11/howto/deployment/checklist/ # SECURITY WARNING: keep the secret key used in production secret! SECRET_KEY = 'NUNYABIZNESS' # SECURITY WARNING: don't run with debug turned on in production! DEBUG = False # DEBUG = bool(os.environ.get('DJANGO_DEBUG', True)) ... -
Serialize extra object with request data and save to db django
def post(self, request, pk): studio = Studio.objects.get_studio_by_id(pk) data = request.data I want to serialize data and studio and save it serializer = BillingInfoSerializer(data=data) if serializer.is_valid(): serializer.save() -
Problems with Django model relations
I've little problem with django models. I'm trying to create a game statistics service, but can't figure out how could I pick players from each team as a starting roster (doesn't contain all of the team players) of the game. Picking should work so that home and visitor has separated player lists. And then it should be possible to create eg Goal object where I could pick player as scorer only from the starting roster. I've already tried to put home and visitor players as ManyToManyField in the Game model, but it won't work. It needs some filtering at least. class Game(models.Model): series = models.ForeignKey(Series, related_name="game_series") date = models.DateTimeField(default=None, blank=True, null=True) home = models.ForeignKey(Team, related_name="game_home") visitor = models.ForeignKey(Team, related_name="game_visitor") class Goal(models.Model): game = models.ForeignKey(Game, related_name="goal_game") minutes = models.PositiveIntegerField(default=None, blank=True, null=True) seconds = models.PositiveIntegerField(default=None, blank=True, null=True) scorer = models.ForeignKey(Player, related_name="goal_scorer") assist = models.ForeignKey(Player, related_name="goal_assist") class Save(models.Model): game = models.ForeignKey(Game, related_name="save_game") player = models.ForeignKey(Player, related_name="save_player") count = models.PositiveIntegerField(default=None, blank=True, null=True) The question is: how should I modify models to achieve the desired result? Note: I'm using admin views for data input, so the proposed resolution should work from there. -
WebpackError Module not found: Error: Can't resolve './__generated__/AdviceEntry_entry.graphql'
In my python django with react I am facing issue attached below, I am new at this level please advice. -
Django; How to take argument from template? [duplicate]
This question already has an answer here: How do I create a Django template tag with two arguments? 1 answer I've been working on Django project. I want to use templatetags for each object in queryset. So I'm wondering if there's a way to pass argument from template to templatetag. What I want to do is like this in views.py, it passes a queryset into template as a context. and in template, I will do for loop. {% load app_name_tags %} {% for entry in entries %} <!-- I want to use templatetag here for each object --> So I want to take each object as an argument. Anyone who can give me tips? -
How can I directly access an instance of a django message via django template?
As a part of my error response I am trying to add "show" to a collapsable container using something like: class="{{request.session.registration}}" but instead of session use django messages so the "show" does not persist. Right now I'm using a pretty janky workaround where I loop through all messages: <form action = "registration" method = "POST" id="registration" class="collapse container {% for message in messages %} {% if 'registration' in message.tags%} {{message}} {% endif %} {% endfor %} "> for reference, the message is added in the views.py via: messages.info(request, 'show', extra_tags='registration') How can I call this message explicitly? -
Django-Tteebeard using treadbeard field forms in django forms
I am trying to use TreeBeard's built in Form's with django forms (not admin). I specifically wanted to replace the rendering of a Select ForeignKey field with TreeBeard forms format. I thought I could do this by declaring the field in my ModelForm, but I've had no success. I'm new to django so my understanding is limited. These are my initial classes in my forms.py MyCategories = movenodeform_factory(Category) class CreatePost(ModelForm): class Meta: model = Post fields = ['title', 'category', 'region', 'content', ] I tried implementing it by declaring the category field in the beginning but this clearly isn't the way to do it. The declaration does return an html formatted category list, but I can't replace the Post category (which is a ForeignKey)with it. class CreatePost(ModelForm): category = movenodeform_factory(Category) class Meta: model = Post fields = ['title', 'category', 'region', 'content', ] The reason I want to use TreeBeard forms is because of the way it nests the fields according to the category hierarchy. -
How to disable Django signals in View?
Sorry for noob question, I'm writing a migration script and i don't want the signals to be triggered. How do i disconnect signal from views? View.py pre_save.disconnect( pre_save_callback, sender=MyModel) Error: NameError: name 'pre_save_callback' is not defined Thanks in advance!
