Django community: RSS
This page, updated regularly, aggregates Django Q&A from the Django community.
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Correctly handling Django migrations conflicts
I'm currently working on a dev branch and I will need to merge it to master one day. I have up to 20 migrations files on my dev branch and about the same number on master at the moment. I needed to make migrations on both branches which will result in migrations having the same prefix, (ex 0003_auto) Now, there are other threads out there about this topic but I never found a relevant one. Basically, I want to know how to correctly handle migrations conflicts but for a general case. In other words, not considering my particular case, if you have migrations files generated by makemigrations with the same prefix, what is the best/secure way of handling this. Here are two ways I have figured myself (maybe entirely wrong): Deleting all migrations files, merge the code and then running a fresh makemigrations and migrate which will result in only one migration file. Using the flag --merge flag: makemigrations –merge I know there are multiple other ways (see this). Now, knowing all this I'd like to know what is the best way of handling this. In general, what should I use that will correctly merge conflicts and get me a … -
Unable to access attributes of the JSON data - django
I have this view def view_involved_people(request): schedule = request.POST['schedule'] query = Schedule.objects.get(pk=schedule).involved_people.all() serialized = serializers.serialize('json', query) data = {'data': serialized} return JsonResponse(data) I have this script $.ajax({ url: "/schedule/ajax/view_people", data: { 'schedule': JSON.parse(id) }, dataType: "json", success: function(data) { console.log(data); }, error: function(data) { console.log(data.responseText); }, type: "post" }); When I do console.log(data), it return this: How can I access the values of the returned data. Do I have an error with my JSON? -
Modify default form for a model in the admin site to accept Postgres arrays
I'm new in Django and I've followed the tutorial. I know that when I do: from .models import Question admin.site.register(Question) I make the administrator capable to create and edit questions from a form that is created from the definition of the model. The problem that I have is that this is a model I made for my project: class Catalog(models.Model): title = models.CharField(max_length=100) description = models.CharField(max_length=500) creation_date = models.DateTimeField('creation date') creators = ArrayField(models.CharField(max_length=35, blank=True), size=10) subjects = ArrayField(models.CharField(max_length=35, blank=True), size=5) instrument = models.CharField(max_length=50) facility = models.CharField(max_length=50) ... And creators and subjects seems to act like normal CharFields. So my questions are: How can I edit the form that is displayed by default? How can I treat creators and subjects like arrays in the form? Thank you. -
possible to return list of dict instead of a list when using for in? django
I have a code which returns a list, which looks something like this [user.name for user in Model.field.filter()] I know this would return me a list of user name but I am wondering if it would be possible to return list of dict? such as [ {'name': 'name1', 'email': 'email1', {'name': 'name2', 'email': 'email2', ] -
Django, JWT, Angular 4, how to redirect after success login
class CreateUserView(CreateAPIView): serializer_class = UserSerializer def post(self, request, *args, **kwargs): serializer = self.get_serializer(data=request.data) if serializer.is_valid(raise_exception=True): self.perform_create(serializer) headers = self.get_success_headers(serializer.data) user = self.model.get(username=serializer.data['username']) payload = jwt_payload_handler(user) token = jwt_encode_handler(payload) return Response( token, status=status.HTTP_201_CREATED, headers=headers ) else: return Response( status=status.HTTP_400_BAD_REQUEST ) how to add that to DB? class LoginUserView(APIView): def post(self, request, *args, **kwargs): username = request.data.get('username') password = request.data.get('password') user = authenticate(username=username, password=password) if user: payload = jwt_payload_handler(user) token = { 'token': jwt.encode(payload, SECRET_KEY), 'status': 'success' } return Response(token) else: return Response( {'error': 'Invalid credentials', 'status': 'failed'}, ) And how redirect after success login to url in angular -
Select2 overdrive option value
Hi i have select2 script witch Django i need save in DB text not value. I think best way to do this is use jquery and detect change event and replace val to option text. Please help me make jquery script. my html: <div class="col-lg-4"> <select name="depositvalues_set-0-name" data-placeholder="Wybierz oponę" data-width="100%" class="form-control m-select2 django-select2 django-select2-heavy select2-hidden-accessible" maxlength="100" id="id_depositvalues_set-0-name" data-allow-clear="true" data-minimum-input-length="0" data-field_id="MTQwMTE3Nzg3OTU1OTQ0:1eAPuS:iiIjCRFFWJ-hM1k153lOvcNLLDs" data-ajax--url="/select2/fields/auto.json" data-ajax--cache="true" data-ajax--type="GET" tabindex="-1" aria-hidden="true"> <option value="" selected=""></option> <option value="1">Opona Kumho 195/75R16 C KC-11 Dostawcza Zimowa</option> </select> Select name is dynamic -
What is the 'instance' created from class 'ListView'?
I follow a tutorial and define class ListView: class RestaurantListView(LoginRequiredMixin, ListView): def get_queryset(self): return RestaurantLocation.objects.filter(owner=self.request.user) I attempt to figure out what's the instance created from the class To accomplish it, I add print for debugging. class RestaurantListView(LoginRequiredMixin, ListView): print(self) # intend to print the objects created def get_queryset(self): return RestaurantLocation.objects.filter(owner=self.request.user) Error reports then NameError: name 'self' is not defined -
Django Model choices based off another model
Sorry if this is confusing, I'm still a bit green with Django. So basically I have two models and I want a selection from one to have all the choices from another model. So basically: class Show(models.Model): venue = models.CharField(max_length=100, choices = VENUE NAME) class Venues(models.Model): Name = models.CharField(max_length=100) Essentially I want the venue to have a list of the venue names that were input into that model. Is this possible? -
The map in head to traverse Django files
There are multiple files in Django: urls.py views.py models.py templates and forms.py to create data. The diagram of it enables you to understand the functions and principles. take a popular vertical map for instance. MTV diagram It's frustrating if you traverse the fils vertically in mind when shift from file to file in editor. What's is a good structure to picture and see them in mind simultaneously when working. -
Import Django Models Into PyCharm's Python Console
I am following the Django tutorial and using PyCharm. I am trying to import Question and Choice from models.py INTO the PyCharm "Python Console". I have __init__.py files located in top-level mysite, lower-level mysite, and in polls directory. I am using a virtual environment and it is activated in the PyCharm Python Console. C:\Users\Jarad\PycharmProjects\OfficialDjangoTutorial\venv\Scripts\python.exe "C:\Program Files\JetBrains\PyCharm 2017.1.5\helpers\pydev\pydevconsole.py" 51164 51165 PyDev console: starting. import sys; print('Python %s on %s' % (sys.version, sys.platform)) sys.path.extend(['C:\\Users\\Jarad\\PycharmProjects\\OfficialDjangoTutorial', 'C:/Users/Jarad/PycharmProjects/OfficialDjangoTutorial']) Python 3.5.2 (v3.5.2:4def2a2901a5, Jun 25 2016, 22:18:55) [MSC v.1900 64 bit (AMD64)] on win32 >>> import sys >>> import os >>> import django >>> os.getcwd() 'C:\\Users\\Jarad\\PycharmProjects\\OfficialDjangoTutorial' sys.path.append('C:\\Users\\Jarad\\PycharmProjects\\OfficialDjangoTutorial\mysite') >>> os.environ['DJANGO_SETTINGS_MODULE'] = 'mysite.mysite.settings' >>> django.setup() >>> from mysite.polls.models import Question, Choice Traceback (most recent call last): File "<input>", line 1, in <module> File "C:\Program Files\JetBrains\PyCharm 2017.1.5\helpers\pydev\_pydev_bundle\pydev_import_hook.py", line 21, in do_import module = self._system_import(name, *args, **kwargs) File "C:\Users\Jarad\PycharmProjects\OfficialDjangoTutorial\mysite\polls\models.py", line 8, in <module> class Question(models.Model): File "C:\Users\Jarad\PycharmProjects\OfficialDjangoTutorial\venv\lib\site-packages\django\db\models\base.py", line 118, in __new__ "INSTALLED_APPS." % (module, name) RuntimeError: Model class mysite.polls.models.Question doesn't declare an explicit app_label and isn't in an application in INSTALLED_APPS. apps.py from django.apps import AppConfig class PollsConfig(AppConfig): name = 'polls' Restate my goal: import the Question and Choice models in PyCharm's "Python Console" because the code hints and inspection of … -
Forms and views in Django: How to clean data, especially data re. mptt models, in formtools.wizard?
I’m trying to write a form using python2.7, django1.11.5, crispy_forms, formtools’ wizardview and djnango-mptt. Sadly, I’m having problems with outputing a cleaned data from the form. Here are some examples of the form fields that I’m using. Forms: from dal import autocomplete class StandardModelForm(forms.Form): first_field = forms.ModelChoiceField( queryset=StandardDjangoModel.objects.all(), widget=autocomplete.ModelSelect2( url='/standard-model-autocomplete/', ) ) helper = FormHelper() helper.form_method = 'POST' class Meta: model = StandardDjangoModel class MPTTModel1Form(forms.Form): second_field = TreeNodeChoiceField( queryset=MyMPTTModel.objects.all(), widget=autocomplete.ModelSelect2( url='/mptt-model-autocomplete/', ) ) class MPTTModel2Form(forms.Form): third_field = TreeNodeMultipleChoiceField( queryset=MyMPTTModel.objects.filter( level=2, contribution_type=1, ), widget=forms.CheckboxSelectMultiple() ) Models: class StandardDjangoModel(models.Model): name = models.CharField( max_length=50) def __unicode__(self): return self.name class MyMPTTModel(MPTTModel): parent = TreeForeignKey('self', null=True, blank=True, related_name='children', db_index=True) field = models.CharField( max_length=200) CONTRIBUTION_TYPES = ( (1, 'One'), (2, 'Two'), (3, 'Three'), ) contribution_type = models.IntegerField( choices=CONTRIBUTION_TYPES, blank=True, null=True) @property def root(self): return self.get_root().field def __repr__(self): return self.field def __unicode__(self): return self.field The views are as simple as can be: from formtools.wizard.views import SessionWizardView class FormularView(SessionWizardView): def done(self, form_list, **kwargs): user_form_input = self.get_all_cleaned_data() return render(self.request, 'summary.html', { 'form_data': user_form_input }) However, if the user inputs a non-ascii character, the following exception is raised (for clarity I've posted only the last lines): File "C:\PYTHON27\lib\site-packages\django\utils\encoding.py", line 80, in force_text s = six.text_type(bytes(s), encoding, errors) UnicodeEncodeError: 'ascii' codec … -
SyntaxError: unexpected EOF while parsing Django
I have this code and I have no idea why this happen.. I'm starting at django so please someone could help me? from django.conf.urls import url from django.contrib import admin from controlinv import views urlpatterns = [ url(r'^admin/', admin.site.urls), url(r'^Login/$', views.login, name='index-login'), url(r'^Inicio/$', views.index, name='indexF') At the end in the console says File "C:\intercamiones\mercedes\src\mercedesapp\urls.py", line 23 url(r'^Inicio/$', views.index, name='indexF') ^ SyntaxError: unexpected EOF while parsing -
Django contact form sending email
I created a contact form to send me an email when the user fills it out. Everything appears to be working, but I'm not getting an email. Here's my console output: Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: Michael Plemmons From: mplemmons1982@gmail.com To: californiamikegreen@yahoo.com Date: Thu, 02 Nov 2017 22:40:50 -0000 Message-ID: <20171102224050.12741.24539@ubuntu> hello this is a test ------------------------------------------------------------------------------- [02/Nov/2017 22:40:50] "POST /contact/ HTTP/1.1" 302 0 [02/Nov/2017 22:40:50] "GET /success/ HTTP/1.1" 200 36 This is views.py from django.shortcuts import render from django.http import HttpResponse, JsonResponse, HttpResponseRedirect from .models import * from .forms import contact_form from django.core.mail import send_mail, BadHeaderError from django.shortcuts import redirect def contact(request): if request.method == 'GET': form = contact_form() else: form = contact_form(request.POST) if form.is_valid(): contact_name = form.cleaned_data['contact_name'] contact_email = form.cleaned_data['contact_email'] contact_message = form.cleaned_data['contact_message'] try: send_mail(contact_name, contact_message, contact_email, ['californiamikegreen@yahoo.com']) except BadHeaderError: return HttpResponse('Invalid header found.') return redirect('success') return render(request, "contact.html", {'form': form}) def success(request): return HttpResponse('Success! Thank you for your message.') This is urls.py from django.conf.urls import url from . import views urlpatterns = [ url(r'contact/$',views.contact, name='contact'), url(r'^success/$', views.success, name='success'), ] this is forms.py from django import forms from django.contrib.auth.forms import UserCreationForm, AuthenticationForm from django.contrib.auth.models import User class contact_form(forms.Form): contact_name = forms.CharField(label='Contact Name', max_length=255) contact_email = … -
Django. Get data from post json request and search
I have my models FormField: class FormField(models.Model): fieldName = models.CharField(max_length=50) text = 'text' email = 'example@email.mail' phone = PhoneNumberField() date = models.DateTimeField TYPE_OF_FIELD_CHOICE = ( (text, 'text'), (email, 'example@email.mail'), (phone, '+9123456789'), (date, '2017-01-01') ) field_type = models.CharField(max_length=25, choices=TYPE_OF_FIELD_CHOICE, default=text) def __str__(self): return self.fieldName FormPattern class FormPattern(models.Model): formName = models.CharField(max_length=50) fields = models.ManyToManyField(FormField) def __str__(self): return self.formName And i need get data from json request and search it in FormField For example : mysite/get_data?f_name1=value1&f_name2=value2 If i found form with fields like this i need to send response in json with name of form's pattern. How can i handle this. I read something about json_view but dont find anything about get data from post json request. Please help if you can. -
How to show objects in the form field (Multiple Select Field) based on a condition in django form.
I have a many to many field linked with my model1. Now, I created a form for this model1 and added this many to many field as a form field and used FilteredSelectMultiple widget to edit this. Now, the problem is the related many to many field has a soft delete option, which I am tracking with active field in the model2. So, now in the form all the objects are displayed even if they are deleted, is there any way I can show the objects which have active as true in this form field. My model form looks as follows: class Editform(form.ModelForm): class Media: css = .. js = .. class Meta: Model = model1 fields = [ "x", "y", "ManytoManyfield"] widgets = { 'ManytoManyfield': FilteredSelectMultiple("Displaay name", False) } -
How to use reverse foreign key relationship twice in one query
I've the models defined as follows: class A(models.Model): name = models.CharField() class B(models.Model): a = models.ForeignKey(A, related_name='aa') name = models.CharField() class C(models.Model): b = models.ForeignKey(B, related_name='bb') name = models.CharField() I'm making a RESTful webservice for model A and I've a queryset defined as queryset = A.objects.prefetch_related('aa').all() But I want data from model C as well. But I'm not sure how can I do that? -
Overide Textarea in Django without models. Only in forms
I want to change default size of Textarea. I read: [https://docs.djangoproject.com/en/1.11/_modules/django/forms/widgets/#Textarea][1] But I don't know how can I override it MY CODE: forms.py: from django import forms class KarForm(forms.Form): message = forms.CharField( widget=forms.Textarea, label="", ) views.py: from django.shortcuts import render from .forms import KarelForm def home(request): form = KarForm() context = { "form": form } return render(request, "form.html", context) -
Django HttpResponseRedirect Results in 404 Error
I have a Django project called investigations which includes an app called alerts. The project worked in development but, while deploying to IIS, I had to change the URLs, and now an HttpResponseRedirect call is not working in one of my views. Here is the view: def alerts(request): newAlerts = Alert.objects.filter(disposition='') formset = AlertFormSet(request.POST or None, queryset=newAlerts) helper = AlertFormsetHelper() context = {'formset':formset, 'helper':helper} if request.method == 'POST': for form in formset: if form.is_valid(): if form.has_changed(): if form.is_valid(): form.save() entity = form.cleaned_data['entity'] messages.success(request, 'SUCCESS: Alert for %s was dispositioned' % entity) return HttpResponseRedirect('/alerts') return render(request, 'alerts/alerts.html', context) The page renders correctly when going to domainname/investigations/alerts. However, when a submit button is hit to save the changed form in the formset, a 404 error with no accompanying detail is returned. The address in the address bar is still domainname/investigations/alerts, as it should be. Here are the urlpatterns in urls.py for the alerts app: url(r'^investigations/$', views.index, name='index'), url(r'investigations/alerts', views.alerts, name='alerts') Why is the HttpResponseRedirect redirecting to the same page (as it should be) but returning a 404 error instead of the page itself? -
Django ImportError: No module named 'collection'
As stated in the title, I keep getting an error when trying to create a form. It's on the line that has: from collection.forms import contact_form An I'm getting the error: File "/home/mike/CINS465/465proj/project/firstapp/views.py", line 2, in <module> from collection.forms import contact_form ImportError: No module named 'collection' Any idea where I'm going wrong? I'm new to django and this was pulled from a tutorial on creating a contact form. I thought collection was built-in to django Thanks -
django/db/backends/mysql/operations.py full path please for ubuntu
Need full path for django.db.backends folder. I already searched for django folder in usr/lib, usr/local/lib/python2.7/dist-packages but unable to find it. -
Allow user to edit his own 'profile model', which has a OneToOne relationship with the user model
I am using the default User model along with a custom AgentBasicInfo 'profile model' with additional information about the user. I am trying to give each user the ability to edit his profile model and only his own. I am using the generic.edit UpdateView. I am confused as to how I approach this. I have tried a few things but gotten errors, mainly NoReverseMatch. See my code below: views.py class EditBasicInfo(LoginRequiredMixin, UpdateView): model = AgentBasicInfo form_class = AgentBasicInfoForm # the user want to edit this post must be owner this post def get_queryset(self): post_qs = super(EditBasicInfo, self).get_queryset() return post_qs.filter(user=self.request.user) models.py class AgentBasicInfo(models.Model): user = models.OneToOneField(User, on_delete=models.CASCADE) user_first_name = models.CharField(max_length=30) user_last_name = models.CharField(max_length=30) preferred_email = models.EmailField() office_phone_number = models.CharField(max_length=10) brokerage_of_agent = models.CharField(max_length=50) def __str__(self): return self.user_last_name urls.py url(r'^edit_base_info/(?P<pk>\d+)/$', views.EditBasicInfo.as_view(), name='edit_base_info'), HTML URL tag {% url 'edit_base_info' agentbasicinfo.id %} I need some guidance as to how I can achieve this. Thank you! -
Symptom form not saving data entered.
I am attempting to create a health app that saves patient data. I created the Unique_Identity table and the Symptom table along with a Unique_Identity_Symptom table the contains ForeignKeys for both tables. The Unique_Identity table contains the ManyToManyField field that establishes a relationship between both tables. Issue : Each time I enter data into to Symptom form and press save it redirects to the Symptom without saving it, and the data entered remains in the field What am I doing wrong? Here is the code : models document from django.db import models from django.contrib.auth.models import User from Identity import settings import datetime class Symptom(models.Model): symptom_Identity = models.CharField(max_length = 80, default = '') content = models.TextField(max_length = 1000, default = '') class Unique_Identity(models.Model): NIS = models.CharField(max_length = 200, primary_key = True) user = models.ForeignKey(settings.AUTH_USER_MODEL) Timestamp = models.DateTimeField(auto_now = True) first_name = models.CharField(max_length = 80, null = True ) last_name = models.CharField(max_length = 80, null = True ) contact = models.CharField(max_length = 15, null = True) location = models.CharField(max_length = 100, blank = True) date_of_birth = models.DateField(auto_now = False, auto_now_add = False, blank = True, null = True) symptom_relation = models.ManyToManyField(Symptom, through = 'Unique_Identity_Symptom') class Unique_Identity_Symptom(models.Model): patient = models.ForeignKey(Unique_Identity, related_name = 'symptoms') … -
dynamically reference property of self in python
I currently have a bunch of language checks in place in a python (django) function: def __get__(self, instance, owner): if translation.get_language() == 'fr': trans_field = getattr(instance, self.fr_field) else: return getattr(instance, self.en_field) What I want to do is run this in a loop: for language in languages: if translation.get_language() == language: return getattr(instance, self.[language]_field) else: return getattr(instance, self.en_field) How do I do this? Obviously the self.[language]_field is pseudocode -
how to handle select boxes in django admin with large amount of records
my app has grown so that that drop downs in the django admin have 100,000s of options. I can't even open my admin anymore because of its load on the database, not too mention I wouldn't be able to find an option in the select box. Does django have an autocomplete option? What is the best option for handling big data in django admin? -
how to make field unique for current user django
I've got Skill model like this: class Skill(models.Model): user = models.ForeignKey(User, blank = True) title = models.CharField(max_length=20) percentage = models.PositiveIntegerField(validators=[MaxValueValidator(100)]) expirience = models.PositiveIntegerField(validators=[MaxValueValidator(80)]) And now I want to make field "title" unique for current user, so User1 couldn't create 2 skills with same titles, but User1 and User2 both could create skill with same titles. I guess there must be some simple solutions without such validation in skill_new() view, but couldn't find any.
