django-models Questions
3
Solved
Context: I'm building a car dealership app using Django 3.1.4, and trying to implement a feature where by every time a new ad is created, so is a new folder (via the upload_to method) within /media...
Wolof asked 5/1, 2021 at 23:56
4
I have this model:
class Invoice(models.Model):
owner = models.ForeignKey(settings.AUTH_USER_MODEL)
data = models.TextField(default=None, blank=True, null=True)
number = models.PositiveIntegerF...
Dupuy asked 25/11, 2015 at 17:8
5
Solved
How can you check the type of a many-to-many-field in django?
I wanted to do it this way:
import django
field.__class__ == django.db.models.fields.related.ManyRelatedManager
This doesn't work...
Soapy asked 17/5, 2010 at 12:47
4
What is the difference between auto_now_add and timezone.now (as default value) for models in Django?
Example:
create_date = models.DateTimeField(auto_now_add=True)
and
create_date = models.Dat...
Supat asked 27/11, 2019 at 16:32
2
Solved
How do I check if there are any ManyToMany field objects related to my model object?
For example, I have a model:
class Category(models.Model):
related_categories = models.ManyToManyField('self'...
Mcgee asked 8/11, 2018 at 10:57
4
I am trying to get display names of choices when using annotate, but I haven't been able to figure out. I have the following query:
Survey.objects.values('what').annotate(count=Count('why')).order...
Extravagancy asked 2/4, 2015 at 19:24
4
Solved
I have a model having choices field. I want to fetch the choices options in a list.
How can I achieve that?
OPTIONS = (
('COOL', 'COOL'),
('WARM', 'WARM'),
)
class My_Model(models.Model):
option...
Hogen asked 8/7, 2021 at 12:28
5
Solved
I want my application to have default data such as user types.
What's the most efficient way to manage default data after migrations?
It needs to handle situations such as, after I add a new table,...
Johannajohannah asked 28/9, 2016 at 6:21
4
Solved
I'm using Django and Python 3.7. I have this code
article = get_article(id)
...
article.label = label
article.save(update_fields=["label"])
Sometimes I get the following error on my "save" line ...
Total asked 22/5, 2019 at 14:22
2
I am getting this error django.core.exceptions.FieldError: Unsupported lookup 'icontains' for ForeignKey or join on the field not permitted
Below is models.py:
class Author(models.Model):
first_na...
Wonted asked 5/6, 2023 at 12:42
3
Solved
I am trying to add a dynamic Meta attribute to all of my Django models using model inheritance, but I can't get it to work. I have a permission that I want to add to all my models like this:
class...
Inrush asked 7/4, 2009 at 14:7
2
I want to count amount of Users for same Product
models.py
class Product(models.Model):
pass
class User(models.Model):
product = models.ForeignKey(Product)
age = models.IntegerField(blank=True...
Isherwood asked 13/6, 2019 at 5:0
10
Solved
I have model UserProfile with field avatar = models.ImageField(upload_to=upload_avatar)
upload_avatar function names image file according user.id (12.png for example).
But when user updates the ...
Crum asked 1/3, 2012 at 19:36
4
Solved
I'm looping through a list of objects and saving. I need the newly generated id or pointer id right after the save but it is None.
Here is my code:
for category in category_list:
saved_categor...
Valeda asked 30/11, 2013 at 19:16
4
Solved
I'm a newbie in Django, so sorry if explanation of problem looks weird.
I created a blog app within a Django project.
models.py:
from django.db import models
class Blog(models.Model):
title =...
Katabolism asked 16/8, 2018 at 5:22
6
Solved
I have facebook authentication in my website which I use omab / django-social-auth
I want to redirect users to another website to make them fill their details. So I want to have users as inactive ...
Paleozoic asked 27/2, 2013 at 21:35
9
Solved
after running "python manage.py syncdb" i gett an error saying "unable to open database file".
here is the important part from my settings.py:
DATABASE_ENGINE = 'sqlite3' # 'postgresql_psycopg2',...
Var asked 19/7, 2010 at 11:5
3
Solved
Question
What is the best way to set a JSONField to have the default value of a new list in django?
Context
There is a model where one of the fields is a list of items. In the case where there a...
Tidbit asked 15/2, 2017 at 2:47
4
Solved
I install my application in "project/apps/myapp" folder. Both apps and myapp folders have init.py files(Without any of them there is module missing error). Now I've the error:
Exception Type: Runt...
Melaniemelanin asked 27/10, 2014 at 15:46
2
Solved
Lets say I have these this base model:
class Trackable(PolymorphicModel):
uuid = UUIDField(unique=True)
created_by = models.ForeignKey(settings.AUTH_USER_MODEL)
created_at = models.DateTimeFiel...
Detention asked 1/3, 2015 at 22:27
4
Solved
I have a model currently defined like this:
class Category(models.Model):
ID = models.AutoField()
name = models.CharField()
desc = models.CharField()
Another model Subcategory has a ForeignKe...
Constellate asked 17/5, 2018 at 8:24
15
Solved
I'm learning Django from Tango with Django but I keep getting this error when I type:
python manage.py makemigrations rango
python manage.py migrate
This is the output:
django.db.utils.Integrit...
Smother asked 31/3, 2015 at 16:38
4
Solved
In Django, I have the following model:
from django.db import models
from django.core.files.base import File
import os, os.path
class Project(models.Model):
video = models.FileField(upload_to="me...
Rameau asked 24/1, 2011 at 21:4
4
Solved
I have a form on my website, that creates an entry in database. So every time when I refresh a page I got this message first:
The page that you're looking for used information that you entered.
R...
Nolasco asked 4/8, 2012 at 19:22
5
Solved
Interesting:
./manage.py makemigrations apps.myapp -> "App 'apps.myapp' could
not be found. Is it in INSTALLED_APPS?"
./manage.py makemigrations myapp -> Works.
./manage.py makemigrations...
Grecian asked 24/9, 2016 at 17:54
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