from django.db import models class Drug(models.Model): id = models.AutoField(primary_key=True) drug_name = models.CharField(max_length=50) class Meta: db_table = 'drug_list' verbose_name = '药品信息表' verbose_name_plural=verbose_name

这是一段 Django 中定义药品信息表的代码，使用了 Django 自带的模型类 models.Model。其中，药品信息表包含了药品名称（drug_name）和自增的药品 ID（id），使用了 db_table 定义了表名为 drug_list，verbose_name 和 verbose_name_plural 分别定义了在 Django 后台管理界面中显示的名称。这段代码还可以进一步完善，例如添加药品的价格、生产厂商等信息。

相关问题

from django.db import models from django.contrib.auth.models import AbstractBaseUser, BaseUserManager import uuid class User(AbstractBaseUser): 补全代码

class User(AbstractBaseUser):
id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
email = models.EmailField(unique=True)
username = models.CharField(max_length=255, unique=True)
is_active = models.BooleanField(default=True)
is_staff = models.BooleanField(default=False)
date_joined = models.DateTimeField(auto_now_add=True)

# ... other fields and methods

USERNAME_FIELD = 'email'
REQUIRED_FIELDS = ['username']

objects = UserManager()

def __str__(self):
return self.email

def has_perm(self, perm, obj=None):
return True

def has_module_perms(self, app_label):
return True

@property
def is_superuser(self):
return self.is_staff

class Meta:
verbose_name = 'user'
verbose_name_plural = 'users'

WARNINGS: ?: (staticfiles.W004) The directory 'static' in the STATICFILES_DIRS setting does not exist. buy.Cart: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'. HINT: Configure the DEFAULT_AUTO_FIELD setting or the BuyConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.d b.models.BigAutoField'. buy.Orders: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'. HINT: Configure the DEFAULT_AUTO_FIELD setting or the BuyConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.d b.models.BigAutoField'. sale.Brand: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'. HINT: Configure the DEFAULT_AUTO_FIELD setting or the SaleConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django. db.models.BigAutoField'. sale.Carinfo: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'. HINT: Configure the DEFAULT_AUTO_FIELD setting or the SaleConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django. db.models.BigAutoField'. userinfo.UserInfo: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'. HINT: Configure the DEFAULT_AUTO_FIELD setting or the UserinfoConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'dja ngo.db.models.BigAutoField'. No changes detected

The warnings indicate the following issues:

- `staticfiles.W004`: The `STATICFILES_DIRS` setting is configured to use a directory named `static`, but it does not exist in your project. You should either create the directory or modify the setting to use an existing directory.

- `models.W042`: Auto-created primary keys are being used for several of your models (`buy.Cart`, `buy.Orders`, `sale.Brand`, `sale.Carinfo`, `userinfo.UserInfo`). You should explicitly define a primary key field for each model instead of relying on the default auto-generated primary key. To do this, add a `primary_key=True` argument to a field in the model definition, or specify a custom primary key field using the `primary_key` attribute.

- `No changes detected`: This is not a warning, but rather an informational message indicating that no changes were detected in your models that require migration.

To address the `models.W042` warnings, you can either add a `primary_key=True` argument to an existing field or create a new field with the `primary_key=True` argument. For example:

class Cart(models.Model):
    cart_id = models.AutoField(primary_key=True)
    # ...

Alternatively, you can configure the `DEFAULT_AUTO_FIELD` setting in your project settings to specify a custom primary key field for all models in your project. For example:

# settings.py
from django.conf import settings

class BuyConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'

settings.configure(BUY_CONFIG=BuyConfig)

This will set the default auto-generated primary key field for all models in the `buy` app to `BigAutoField`. You can repeat this pattern for other apps in your project as well.