Django community: Django Q&A RSS
This page, updated regularly, aggregates Django Q&A from the Django community.
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How to send checked checkboxes in request to server - automatically downloading file
Could someone help me with this question: How to send checked checkboxes in request to server (for example, it's Django, in my case) and then, in response, automatically downloading file? I am interested in common recipes, advice or simple example. As I know, Ajax and JS(JQuery), in common, don't have a solution for it because of privacy. Or am I under a misapprehension? -
User attribute not attached to request object in subsequent requests in mongoengine auth
I've tried to use the link below for the solution for login, but when I do /login it will initially have the user attribute added to the request. When I make subsequent calls after that the user attribute isn't persisted on the request object. MongoEngine User authentication (django) In my settings.py I do import the AuthenticationMiddleware so it should persist the user attribute but its not. Here is my views.py: from django.contrib.auth import login, logout, authenticate from mongoengine.django.auth import User from mongoengine.queryset import DoesNotExist from django.http import HttpResponse from django.contrib.auth.decorators import login_required import json def login_view(request): user = User.objects.get(username='john') user.backend = 'mongoengine.django.auth.MongoEngineBackend' login(request, user) request.session.set_expiry(60 * 60 * 1) # 1 hour timeout if(request.user.is_authenticated()): return HttpResponse(request.user.username) else: return HttpResponse('Not Authenticated!') def do_something(request): return HttpResponse(request.user.username) Here is my settings.py: """ Django settings for questiveAuth project. For more information on this file, see https://docs.djangoproject.com/en/1.7/topics/settings/ For the full list of settings and their values, see https://docs.djangoproject.com/en/1.7/ref/settings/ """ # Build paths inside the project like this: os.path.join(BASE_DIR, ...) import os BASE_DIR = os.path.dirname(os.path.dirname(__file__)) # Quick-start development settings - unsuitable for production # See https://docs.djangoproject.com/en/1.7/howto/deployment/checklist/ # SECURITY WARNING: keep the secret key used in production secret! SECRET_KEY = '%skvtelk+53alr^y8lr4z5d1+4_!_kgmy8%w0ip_%e&^ug$kas' # SECURITY WARNING: don't run with ... -
Django Tutorial Part 3 - Index.html not doing anything
I am working on part 3 of the django tutorial and after setting up index.html and views although nothing is happening. This is what the tutorial says should be happening, "Load the page by pointing your browser at “/polls/”, and you should see a bulleted-list containing the “What’s up” question from Tutorial 1. The link points to the question’s detail page." The list doesn't show up, all I see if "Hello, world. You're at the polls index." These are my files: from django.http import HttpResponse from django.shortcuts import render from polls.models import Question def index(request): latest_question_list = Question.objects.order_by('-pub_date')[:5] context = {'latest_question_list': latest_question_list} return render(request, 'polls/index.html', context) def index(request): return HttpResponse("Hello, world. You're at the polls index.") def detail (request, question_id): return HttpResponse("You're looking at question %s." % question_id) def results(request, question_id): response = "Your looking at the results of question %s." return HttpResponse(response % question_id) def vote(request, question_id): return HttpResponse("You're voting on question %s." % question_id) Views.py {% if latest_question_list %} <ul> {% for question in latest_question_list %} <li><a href="/polls/{{ question.id }}/">{{ question.question_text }}</a></li> {% endfor %} </ul> {% else %} <p>No polls are available.</p> {% endif %} Index.Html (located in mysite/polls/templates/polls) from django.conf.urls import patterns, url from polls import ... -
Django Rest Framework filter queryset on self field
I'm using Django Rest Framework to build my API. I'm using the models/signals of django-simple-friends for a friends app and am having trouble serializing a ManyToMany field that needs to be filtered by the user field on the same instance. # models.py class FriendshipManager(models.Manager): def friends_of(self, user): qs = User.objects.filter(friendship__friends__user=user) return qs class Friendship(models.Model): """ Represents the network of friendships. """ user = models.OneToOneField(User, related_name='friendship') friends = models.ManyToManyField('self', symmetrical=True) objects = FriendshipManager() # serializers.py class FriendshipSerializer(serializers.ModelSerializer): # object_user = User.objects.get(id=1) user = serializers.PrimaryKeyRelatedField( queryset=User.objects.all() ) friends = serializers.PrimaryKeyRelatedField( many=True, # this queryset throws an error queryset=Friendship.objects.friends_of(object_user), ) class Meta: model = Friendship fields = ('user', 'friends',) I've got it close, the only problem is that the queryset for friends in the serializer doesn't work. I've found it's because it's looking at the serializer object user and not the Model object. If I hardcode user to be object_user = User.objects.get(id=1) it doesn't give me an error, but it also doesn't serialize correctly. I feel like the answer should be in the Filtering docs or the Serializer Relations docs, but I'm not seeing anything on this topic? Any thoughts on how I could filter the queryset of the friends by the user ... -
Django Internationalization gives fuzzy with capital letters
I am setting up internationalization for a Django project (1.7). I am successfully generating .po files, however, I have entries such as: #: my_app/templates/my_app/profile.html:155 #, fuzzy #| msgid "Court" msgid "court" msgstr "" From what I understand , fuzzy will cause the translation not to happen. I would like the capitalization to remain as is, so how can I make the translations match the original words? I imagine maybe those can be forced to be generated as two separate entries in .po file? -
I get a 400 error trying to obtain instagram access code
I'm trying to obtain an access from instagram by doing the following: clientID = '#################' clientSecret = '##################' def index(request): if request.GET: code = request.GET['code'] url = "https://api.instagram.com/oauth/access_token" settings = { 'id' : clientID, 'secret' : clientSecret, 'grant_typ' : 'authorization_code', 'redirect' : 'http://localhost:8000/User', 'code' : code } data = urllib.urlencode(settings) req = urllib2.Request(url,data) response = urllib2.urlopen(req) return HttpResponse(response.read()) Im suppose to send settings to the url and recieve and access token in return. However, I keep getting a 400 error -
Heroku Memcachier Server Error
recently I've been experiencing a periodic error that results in a Heroku server crash, and I believe it to be originating from the MemCachier addon. The logs are found below: » 09:43:19.038 2015-03-02 15:44:00.567613+00:00 app web.2 - - Traceback (most recent call last): File "/app/.heroku/python/lib/python2.7/site-packages/django_pylibmc/memcached.py", line 106, in set MIN_COMPRESS) File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-2.18.1.15/NX/newrelic/api/memcache_trace.py", line 43, in _nr_wrapper_memcache_trace_ return wrapped(*args, **kwargs) MemcachedError: error 47 from memcached_set: SERVER HAS FAILED AND IS DISABLED UNTIL TIMED RETRY, host: mc5.dev.ec2.memcachier.com:11211 -> libmemcached/connect.cc:592 » 09:44:13.053 2015-03-02 15:44:00.305034+00:00 app web.2 - - Traceback (most recent call last): File "/app/.heroku/python/lib/python2.7/site-packages/django_pylibmc/memcached.py", line 96, in get return super(PyLibMCCache, self).get(key, default, version) File "/app/.heroku/python/lib/python2.7/site-packages/django/core/cache/backends/memcached.py", line 64, in get val = self._cache.get(key) File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-2.18.1.15/NX/newrelic/api/memcache_trace.py", line 43, in _nr_wrapper_memcache_trace_ return wrapped(*args, **kwargs) HostLookupError: error 2 from memcached_get(:1:django.contrib.sessions.cache): getaddrinfo() or getnameinfo() HOSTNAME LOOKUP FAILURE, Name or service not known, host: mc5.dev.ec2.memcachier.com:11211 -> libmemcached/connect.cc:179 I believe the second error log originated because the cache lookup was not available after error #1 - but I'm having difficulty investigating the first error. Currently we're on the dev plan of the Heroku addon, so maybe this could be due to running out of allowed connections? Is there any way to determine this aside from joining the paid plan? ... -
Dynamically add languages to django project
I'm building an application with which multiple websites can be 'made' and managed. Not all websites that are managed from the admin should be translated to the same language so i'm looking for a way to add languages dynamically. I could, of course, build it myself but i know this'll most probably be less efficient than a solution that has been out there for a while (if there are any). I hope someone can point me in the right direction. Thanks! -
Django model creation from existing MongoDB databases
I have a few databases in MongoDB that I want to create models for dynamically, since there are many databases and I cannot do it manually. Questions: What should my models.py look like? (Does inspectdb work with mongodb databases or only SQL based dbs?) Since the database models are created dynamically, how do I code the serializer class to return the dynamic fields? Thanks in advance. -
Ho to declare 2-D array in Django template
I have details containing date and revenue. I want to prepare a 2-D array to use into JavaScaript Somethine like: {% line_graph = [] line_graph.append([]) line_graph.append([]) i = 0 for data in details: line_graph[i].append(data.date) line_graph[i](data.revenue) i=i+1 endfor %} But this code doesn't works in Django Template. How can i make a 2-D array which looks like [[1,14],[2,15],[3,18],[4,16]] and how to pass it in JavaScript? -
Is it possible to use django-rest-framework 3.x `ListSerializer` without overriding `get_serializer`?
I've made a RawMeasurementSerializer and a RawMeasurementListSerializer (subclassing ListSerializer) which all work as expected. The documentation says I shouldn't use the ListSerializer directly but rather instantiate the singular serializer with the many=True argument. So I'm forced to override get_serializer in my view: class RawMeasurements(CreateAPIView): def get_serializer(self, *args, **kwargs): serializer_class = RawMeasurementSerializer kwargs['context'] = self.get_serializer_context() return RawMeasurementSerializer(many=True, *args, **kwargs) This is basically identical to the DRF implementation in generics.py, bar the many=True. I would prefer not to re-implement bits of DRF where possible. Is there a better way, can I do something like this? class RawMeasurements(CreateAPIView): serializer_class = RawMeasurementSerializer use_list_serializer = True So far my best attempt is this: from functools import partial class RawMeasurements(CreateAPIView): serializer_class = partial(RawMeasurementSerializer, many=True) This works, but doesn't feel very pythonic to me! Thanks, Paul -
adding metadata fields in gridfs using django mongodb engine in django
How do I add fields in the metadata of gridfs along with the default fields? Using the following code in models.py class Event(models.Model): name = models.CharField(max_length=10*1024*1024) details = models.TextField() image = models.FileField(storage=gridfs, upload_to='/uploads', ) It gives only the default fields in the metadata of gridfs > db.storage.uploads.files.findOne() { "_id" : ObjectId("54e5e7b48cdc060e7e395a20"), "chunkSize" : 261120, "filename" : "programmingquotes.jpg", "length" : 25907, "uploadDate" : ISODate("2015-02-19T13:40:04.685Z"), "md5" : "34c9e80e9a87b632e24b30d29c19e32e" } How do I add extra fields in this metadata? -
How to constantly update data with Django
I'm building a website with Django (1.7) that pulls tweets from the twitter api. I would like the latest 10 tweets from a given user. What is the best way to make sure the tweets are up to date? My idea was to wipe the database of the 10 tweets and grab the newest 10 every 5 minutes? How would I do this? Would it be in the model.py file? Is this the best way to do it? Right now I have the following code at the bottom of my models.py file. It populates the data perfectly, but how would I go about updating it? I'm using twython to interface with the twitter api and python 3.4. list_of_people are twitter usernames I'm testing with. twython passes back a list of dicts, I'm then grabbing the data I want from each tweet and putting it in the database twitter = twython.Twython(APP_KEY, APP_SECRET, OAUTH_TOKEN, OAUTH_TOKEN_SECRET) list_of_people = ["billgates", "TheEllenShow"] for person in list_of_people: user_timeline = twitter.get_user_timeline(screen_name=person) for x in range(10): Category.objects.create(username=person, realname=user_timeline[x]['user']['name'], tweets=user_timeline[x]['text'],tweettime=user_timeline[x]['created_at']) -
no module named 'cart' when i go to admin
I've created an app 'cart' and trying to import it in another app's view.py file. when i go to browser and type http://localhost:8000/admin/ it says "no module named cart' but it's working fine in my 'terminal'. worth mentioning that 'home' view is also working fine. problem is at 'admin'. -
KeyError in MongoKit when adding nested field to structure
I have the following structure: structure = { 'firstname': basestring, 'lastname': basestring, 'genres': [basestring], 'address': [ {'number': basestring, 'street': basestring, 'town': basestring} ], 'phone': [ {'type': basestring, 'number': basestring} ], } And I have a small helper method to iterate over cursors to return a python dict like so: def to_django_context(cursor): records = [] for r in cursor: records.append(r.to_json_type()) return records this works fine until I want to add another nested field to the structure like this: structure = { 'firstname': basestring, 'lastname': basestring, 'genres': [basestring], 'address': [ {'number': basestring, 'street': basestring, 'town': basestring} ], 'phone': [ {'type': basestring, 'number': basestring} ], 'title': [{'TEST_FIELD': basestring}], } at which point my cursor iterator fails with a KeyError. If I delete all the documents in the collection it works normally. So does this mean that everytime I change my document structure object I have to essentially drop the collection? Cheers, F -
How to run HP Fortify Scans over Django Application
When I run Fortify's SCA over a Django Application errors are returned due to improper syntax of some html template files. This is because the Django framework will dynamically evaluate variables defined in the html. Are there any fortify plugins that can be added so it can properly interpret a Django Application? -
Django: Sqlite and regexp in query
I'm using Django with a PostgreSQL database and this query forks fine: REQUEST_TYPE_ENTRANCE = 1 REGEX_ENTRANCE = r'^{0},|,{0},|,{0}$|^{0}$'.format( REQUEST_TYPE_ENTRANCE ) entrance_registers = EntranceRegister.objects.filter(authorized_requests__regex=REGEX_ENTRANCE) But when I run tests with SQLite database it returns no results. Here is the output of print EntranceRegister.objects.filter(authorized_requests__regex=REGEX_ENTRANCE).query: SELECT "porter_entranceregister"."id", "porter_entranceregister"."status", "porter_entranceregister"."authorized_requests", "porter_entranceregister"."gone_at", "porter_entranceregister"."created_at" FROM "porter_entranceregister" WHERE "porter_entranceregister"."authorized_requests" REGEXP ^1,|,1,|,1$|^1$ ORDER BY "porter_entranceregister"."created_at" DESC I suppose that the problem might be with missing quotes here: https://github.com/django/django/blob/master/django/db/backends/sqlite3/base.py#L129, but when I change this file in my virtualenv, it fails with ProgrammingError: Incorrect number of bindings supplied. The current statement uses 6, and there are 7 supplied. -
Views in Django with arbitrary number of url parameters
I want to write universal View with Django, in this function i want to handle several situations: first when i have url like vkusers3/11122233/1/2/ and also i want it working when 2 or third arguments is missing in url, like: vkusers3/11122233/ or vkusers3/11122233/1/ I cannot find it tutorials how to do that (https://docs.djangoproject.com/en/1.6/topics/http/urls/ etc). The problem that this became a nightmare when you have more than 5 combinations in url parameters, then you should write 5 different url configurations, 5 times in html template hardcode this pattern. BUT wait, even more!, what about combinatorics: i want /user/group/sex/smoking/ but also i want /user/group/smoking/ i.e. all users from group who is smoking of both man and woman. So the number is huge. def list_groupmembers_sex(request, group_id, sex=None, smoking=None): success = False if group_id and sex and smoking==None: vkusers = Vkuser._get_collection().find({"member_of_group": int(group_id), 'sex': int(sex)})# 62740364 81099158 success = True elif group_id and sex and smoking!=None: vkusers = Vkuser._get_collection().find({"member_of_group": int(group_id), 'sex': int(sex), 'personal.smoking': int(smoking)}) success = True else: vkusers = Vkuser._get_collection().find({'personal.smoking': 1}) ctx = {'vkuser_list': vkusers, 'group_id': group_id, 'sex': sex, 'smoking':smoking, 'success': success} return render_to_response('blog/vkuser_list.html', ctx, context_instance = RequestContext(request)) In my urls.py: url(r'^vkusers3/(\d{1,8})/(\d{1})/(\d{1})/$', 'blog.views.list_groupmembers_sex', name='vkuser-list3'), In my base.html: <li class="menu-level-1"><a href="{% url 'vkuser-list3' group_id sex ... -
Catching NotFound (404) and TimeOut (504) Django application exceptions in uWSGI + nginx setup
I want to know how will I catch NotFound and TimeOut exceptions in the views.py in my Django application, setup using uWSGI + nginx. I tried this: def sample(request): try: ... return HttpResponse("OK") except Exception, ex: return HttpResponse("%s - %s" % (type(ex), ex.message)) But I am still getting this html template response returned by nginx: <html> <head><title>504 Gateway Time-out</title></head> <body bgcolor="white"> <center><h1>504 Gateway Time-out</h1></center> <hr><center>nginx/1.6.2</center> </body> </html> When I am sending a request like this: response = requests.get(test_url).content I'm sure that the request that I am sending encounters a timeout exception. How should I do this? Thanks in advance for any feedback! -
Python, Django 1.7 : Redirect all URLs to a single controller
let's base URL is so.com So, if URL start with abc e.g. so.com/abc/ so.com/abc/123 so.com/abc?newtab=123 so.com/abc#123 ... Then all this URL patterns should go to a Class Abc myapp/urls.py ... url(r'^abc[a-zA-Z0-9=#_\?\-/]+$',views.Abc.as_view(),name='abc') myapp/myviews/abc.py class Abc(View): def get(self,request): ... def foo(user_id): ... def bar(post_id): ... In function get(self,request): how to get everything after abc that was requested . e.g. so.com/abc/xyz => /xyz so.com/abc#123 => 123 so.com/abc?tab=new => ?tab=new When #123 is added after abc then it converts it to abc/#123 How to get this work ? I have seen many question but they are not helpful. Django Get Absolute URL What is a "slug" in django? Get the current URL within a django template ... -
Test api method that requires oauth2 login
i have problem testing api method that requires to login via oauth2. class APITests(APITestCase): def setUp(self): # create user user = SUser( email='zosia@zosia.pl', username='zosia' ) user.set_password('zosia123') user.save() # create application application = Application( client_id='Skibook', user=user, client_type='Public', authorization_grant_type='Authorization code' ) application.save() # create grant token grant_token = Grant( user=user, code='asd', application=application, expires=datetime.date.today() + datetime.timedelta(days=1), redirect_uri='/', scope = 'read write' ) grant_token.save() # create access token access_token = AccessToken( user=user, token='asd', application=application, expires=datetime.date.today() + datetime.timedelta(days=1) ) access_token.save() def test_get_all_collegues(self): client = APIClient() client.credentials(HTTP_AUTHORIZATION='Bearer ' + 'asd') url = '/api/get_colleagues/' response = client.get(url, format='json') print response self.assertEqual(response.status_code, status.HTTP_200_OK) this is the error message im getting: {"response":{"status":404,"errors":[{"message":"OAuth2 application doesn't exists"}],"data":null}} F ====================================================================== FAIL: test_get_all_collegues (api.tests.APITests) ---------------------------------------------------------------------- Traceback (most recent call last): File "/home/daro/web-skibook/api/tests.py", line 73, in test_get_all_collegues self.assertEqual(response.status_code, status.HTTP_200_OK) AssertionError: 404 != 200 instead of 200 status code: curl -H "Authorization: Bearer zosia" -X GET http://localhost:8000/api/get_colleagues/ {"response":{"status":200,"errors":null,"data":[{"user_id":4,"email":"basia@exampl11e.com","avatar":null}]}}% hope you can help me:) thank you!!!! .......................... ....................... -
API for fetching movie details from IMDB or similar sites?
I've tried using OMDb, it gives all the things I need and has a very simple working too, but it is very very slow. I looped about 200 queries and it took about 3 minutes to complete. Is there any faster API out there that can give me similar results on querying an movie. The details i'm looking for in particular are genre, actors and director. My base code is written in python (for my django server), so an API with a wrapper would just make my day -
Django, two ImageField pointing to the same file
I'd like my two image fields point to the same image. At one time, I'll have one image field populated. At later time, I'd like another imageField to point to the same file. (If the first one changes, the second one gets updated as well) The file is at amazon s3 if it matters. I could use django-imagekit. -
Add an New app to django-oscar
I am making a Bookshop using Django-Oscar and everything is going great. but I want to add an app (model/view/admin) to show some information about the author of the book. as i dont want to change any of the apps that exist. i just did a STARTAPP with a new name of my app AUTHORS. but django is showing me some mistakes. and i dont know if it is because i didnt fork Oscar, or why. in the examples that there are in the internet i havent found anything similar. this is the error that i am getting when i am trying to do SYNCDB for my new app. Traceback (most recent call last): File "manage.py", line 10, in <module> execute_from_command_line(sys.argv) File "/Users/reyesoscar/Desktop/oscar/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line utility.execute() File "/Users/reyesoscar/Desktop/oscar/lib/python2.7/site-packages/django/core/management/__init__.py", line 354, in execute django.setup() File "/Users/reyesoscar/Desktop/oscar/lib/python2.7/site-packages/django/__init__.py", line 21, in setup apps.populate(settings.INSTALLED_APPS) File "/Users/reyesoscar/Desktop/oscar/lib/python2.7/site-packages/django/apps/registry.py", line 108, in populate app_config.import_models(all_models) File "/Users/reyesoscar/Desktop/oscar/lib/python2.7/site-packages/django/apps/config.py", line 202, in import_models self.models_module = import_module(models_module_name) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module __import__(name) File "/Users/reyesoscar/Desktop/oscar/frobshop/author/models.py", line 5, in <module> class AuthorProfile(models.Model): File "/Users/reyesoscar/Desktop/oscar/frobshop/author/models.py", line 6, in AuthorProfile Author_name = models.ForeignKey(max_length=70, blank=False, null=True) TypeError: __init__() takes at least 2 arguments (1 given) thanks!! -
User specific data in automatic generated forms
My code is pretty simple and straight forward. These are my forms class LearningObjectiveForm( ModelForm ): class Meta: model = LearningObjective fields = ( 'learning_objective', 'topic', ) this is a snippet from my template <form method="POST" action="."> {% csrf_token %} <table> {{ form }} </table> <input type="submit" value="Speichern"/> </form> this form makes now every topic access able for every user. Since this field normally has a user restriction, I don't want that every topic is shown but just the topic for a certain user. The structure in my models for this specific case look like this class Trainee( models.Model ): username = models.TextField() first_name = models.TextField() last_name = models.TextField() education_beginning = models.DateField() comment = models.TextField( null = True, blank = True ) class Topic( models.Model ): trainee = models.ForeignKey( Trainee ) topic = models.TextField() class LearningObjective( models.Model ): trainee = models.ForeignKey( Trainee ) topic = models.ManyToManyField( Topic, blank = True, null = True) learning_objective = models.TextField() Topics should be trainee specific. Do I have to write my own form in the template or is there such a way so that I still can auto generate it?
