django-1.8

问题 I have a table with one of the columns as date . It can have multiple entries for each date. date ..... ----------- ----- 2015-07-20 .. 2015-07-20 .. 2015-07-23 .. 2015-07-24 .. I would like to get data in the following form using Django ORM with PostgreSQL as database backend: date count(date) ----------- ----------- 2015-07-20 2 2015-07-21 0 (missing after aggregation) 2015-07-22 0 (missing after aggregation) 2015-07-23 1 2015-07-24 1 Corresponding PostgreSQL Query: WITH RECURSIVE date_view

问题 I have a table with one of the columns as date . It can have multiple entries for each date. date ..... ----------- ----- 2015-07-20 .. 2015-07-20 .. 2015-07-23 .. 2015-07-24 .. I would like to get data in the following form using Django ORM with PostgreSQL as database backend: date count(date) ----------- ----------- 2015-07-20 2 2015-07-21 0 (missing after aggregation) 2015-07-22 0 (missing after aggregation) 2015-07-23 1 2015-07-24 1 Corresponding PostgreSQL Query: WITH RECURSIVE date_view

问题 I am using GeoDjango GIS for proximity search result based on latitude and longitude. The model, is quiet simple: class Address(gismodels.Model): # partner = models.ForeignKey(Partner, related_name="partner_addresses", on_delete=models.CASCADE) street = gismodels.CharField(max_length=255) city = gismodels.CharField(max_length=255) postcode = gismodels.CharField(max_length=255, null=True, blank=True, default='0000') country = gismodels.CharField(max_length=255) businesses = gismodels

问题 The normal way to start the Django server is to run the following command from a terminal or a bash script: python manage.py runserver [Ip.addr]:[port] e.g. python manage.py runserver 0.0.0.0:8000 How can I start a Django server from a Python script? One option is the following import os if __name__ == "__main__": os.environ.setdefault("DJANGO_SETTINGS_MODULE", "server.settings") from django.core.management import execute_from_command_line args = ['name', 'runserver', '0.0.0.0:8000'] execute

问题 I have the following custom SignupForm (simplified, works perfectly without my_file): class SignupForm(forms.Form): home_phone = forms.CharField(validators=[phone_regex], max_length=15) my_file = forms.FileField() def signup(self, request, user): new_user = ReqInfo( user=user, home_phone=self.cleaned_data['home_phone'], my_file=my_file, ) new_user.save() In models.py: class ReqInfo(models.Model): user = models.OneToOneField(User, on_delete=models.CASCADE, blank=True, null=True) home_phone =

问题 I'm looking for a generic way in Python to instantiate class by its name in similar way how it is done in Java without having to explicitly specify the class name in IF..ELIF condition. This is because I have several different models and serializers and want to make them addressable by parameters in the HTTP request. It is to enhance loose coupling and modularity. For example https://www.domain.com/myapp/sampledata.json?model=<modelname> should get the classes <modelname> and <modelname

问题 I have problems with my Django, I want to write a very simple query but it doesn't work. Model: class Games(models.Model): name = models.CharField(max_length=128) path_to_folder = models.CharField(max_length=256) description = models.TextField() cover = models.URLField() def __str__(self): return self.name I am trying something like this (It should find itself in my opinion): >>> from gamepanel.models import Games >>> e = Games.objects.all() >>> print (e) [<Games: Call Of Duty 4>] >>> e[0]

问题 I am using django-storages which I have used in the past to work with AWS S3. But with Microsoft Azure I am running into errors which return no results on google. I am developing using python 3 and Django 1.8.4. I am using django-storages and django-storages-redux for python 3 support. When calling ./manage.py collectstatic and enter yes I get two (!) errors: Traceback (most recent call last): File "/Users/mac/.virtualenvs/bratwurst/lib/python3.4/site-packages/storages/backends/azure_storage

问题 I am following a Django TDD tutorial at: http://www.marinamele.com/taskbuster-django-tutorial/taskbuster-working-environment-and-start-django-project I get the following error when running 'all_users.py' before and after I start the development server 'python manage.py runserver' : Traceback (most recent call last): File "functional_tests/all_users.py", line 15, in test_it_worked self.browser.get('http://localhost:8000') File "/Users/samgao/.virtualenvs/tb_test/lib/python3.6/site->packages

问题 When upgrading to Django 1.8 (with zc.buildout) and running syncdb or migrate, I get this message: django.db.utils.ProgrammingError: relation "auth_user" does not exist One of my models contains django.contrib.auth.models.User: user = models.ForeignKey( User, related_name='%(app_label)s_%(class)s_user', blank=True, null=True, editable=False ) Downgrading to Django 1.7 removes the error. Do I have to include the User object differently in Django 1.8? 回答1: I fix this by running auth first, then