我不确定哪里出了问题。
我试过 migrate/makemigrations 但这没有帮助,我在 virtualenv 中工作。
我的模型.py
from django.db import models
import re
# Create your models here.
class Currency(models.Model):
def __str__(self):
return self.short
name = models.CharField(max_length=32, null=True, blank=True)
country = models.CharField(max_length=50, null=True, blank=True)
short = models.CharField(max_length=10, null=True, blank=True)
class Source(models.Model):
def __str__(self):
return self.name + '({}...)'.format(self.url[:20])
url = models.URLField()
name = models.CharField(max_length=250, verbose_name='Source_name')
timestamp = models.DateTimeField(auto_now_add=True)
currency = models.ForeignKey(Currency)
def save(self, *args, **kwargs):
self.name = ''.join(re.sub('\s+', ' ', self.name).strip())
super(Source, self).save()
class Product(models.Model):
def __str__(self):
return self.name
name = models.CharField(max_length=250, blank=False)
prices = models.ManyToManyField(to='Price', blank=True)
date_creation = models.DateField(auto_now_add=True)
prod_code = models.CharField(max_length=250, blank=True, null=True)
def save(self, *args, **kwargs):
self.name = ''.join(re.sub('\s+', ' ', self.name).strip())
super(Product, self).save()
创建对象的函数
def from_csv_to_db(csv_name): # empty DB
try:
df = pd.read_csv(csv_name, sep=';')
except FileNotFoundError:
return ('Please input correct path to csv file or check spelling. Process finished')
for i, row in df.iterrows():
Currency.objects.get_or_create(short=row['source__currency__short'], id=row['source__currency_id'])
Product.objects.get_or_create(id=row['product__id'], name=row['product__name'])
Source.objects.get_or_create(id=row['source__id'], name=row['source__name'], url = row['source__url'],
currency_id=row['source__currency_id'])
Parser.objects.get_or_create(script=row['script'], boolean=row['boolean'], product_id=row['product__id'],
source_id=row['source__id'])
return 'Done'
但是,django 确实通过查询集显示了我的模型对象
在 python manage.py shell
from Parser.models import *
Product.objects.all()
<QuerySet [<Product: test product>, <Product: iphone>, <Product:
Mac>, <Product: iPad>]>
但是当我运行 python manage.py dbshell > select * from Parser_product;
我得到 错误:关系“parser_product”不存在
我在 Debian 上使用 Docker,这是远程完成的。
最佳答案
关于python - Django 不在数据库中创建对象,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49778816/