Добрый день! Столкнулся с такой проблемой при загрузке данных в джанго - TypeError: Direct assignment to the forward side of a many-to-many set is prohibited. Use location_id.set() instead.
Прочитал про похожую ситуацию
вот здесь, но так и не понял как и где использовать location_id.set(). Подскажите пожалуйста как можно решить проблему
Вот моя модель
from django.db import models
# Create your models here.
class Location(models.Model):
name = models.CharField(max_length=150)
lat = models.DecimalField(decimal_places=4, max_digits=6, null=True)
lng = models.DecimalField(decimal_places=4, max_digits=6, null=True)
def __str__(self):
return self.name
class Meta:
verbose_name = 'Локация'
verbose_name_plural = 'Локации'
class User(models.Model):
ROLES = [
("member", "Пользователь"),
("moderator", "Модератор"),
("admin", "Админ"),
]
first_name = models.CharField(max_length=150)
last_name = models.CharField(max_length=150)
username = models.CharField(max_length=150)
password = models.CharField(max_length=150)
role = models.CharField(max_length=50, choices=ROLES, default='member')
age = models.IntegerField
location_id = models.ManyToManyField(Location)
def __str__(self):
return self.username
class Meta:
verbose_name = 'Пользователь'
verbose_name_plural = 'Пользователи'
Вот скрипт загрузки
from csv import DictReader
from django.core.management import BaseCommand
# Import the model
# from children.models import children
from users.models import User
ALREDY_LOADED_ERROR_MESSAGE = """
If you need to reload the child data from the CSV file,
first delete the db.sqlite3 file to destroy the database.
Then, run `python manage.py migrate` for a new empty
database with tables"""
class Command(BaseCommand):
# Show this when the user types help
help = "Loads data from children.csv"
def handle(self, *args, **options):
# Show this if the data already exist in the database
if User.objects.exists():
print('child data already loaded...exiting.')
print(ALREDY_LOADED_ERROR_MESSAGE)
return
# Show this before loading the data into the database
print("Loading childrens data")
# Code to load the data into database
for row in DictReader(open('./datasets/user.csv', encoding='utf-8')):
child = User.objects.create(
first_name=row['first_name'],
last_name=row['last_name'],
username=row['username'],
password=row['password'],
role=row['role'],
age=row['age'],
location_id=row['location_id']
)
