tortoise_sqllite_crud

sqlite tortoise crud

from enum import IntEnum
 
from tortoise import connections, fields, models
from tortoise.expressions import F, Q, RawSQL, Subquery
from tortoise.functions import Avg, Sum
 
 
class AbstractModel(models.Model):
    # 主键，当表里所有属性都没设置pk时，默认生成一个IntField类型 id 的主键
    id = fields.UUIDField(pk=True)
 
    class Meta:
        # 抽象模型，不生成表
        abstract = True
 
 
class MixinTimeFiled:
    # 添加数据时间 null = True tianjia gengxing buyong fuzhi
    created = fields.DatetimeField(null=True, auto_now_add=True)
    # 修改数据时间
    modified = fields.DatetimeField(null=True, auto_now=True)
 
 
class Gender(IntEnum):
    MAN = 0
    WOMAN = 1
 
 
class UserModel(AbstractModel, MixinTimeFiled):
    # unique 是否唯一 max—length 数据长度 index 是否索引
    username = fields.CharField(
        max_length=20, description="描述", unique=True, index=True
    )
    # null 是否可以为空
    nickname = fields.CharField(
        max_length=30, description="nickname", null=True, default="777"
    )
    # description 字段备注 ddl展示， 此处入库的为 0 or 1
    gender = fields.IntEnumField(Gender, description="sex", default=Gender.WOMAN)
    # max——digits 小输点左边最大位数，decimal——places 小数点右边最大位数99.99
    balance = fields.DecimalField(max_digits=2, decimal_places=2, description="balance")
    is_admin = fields.BooleanField(default=False)
    job_info = fields.JSONField(default=dict)  # {}
 
    class Meta:
        # 自定义表名，不配置按照类名小写生成 usermodel
        table = "tableName"
        table_description = "set table ddl desc"
 
        # 多列设置唯一复合所有
        # unique_together = (("gender", "balance"),)
        # 排序
        ordering = ("is_admin",)
        # 索引
        indexes = ("balance",)
 
    def __str__(self):
        return self.username
 
 
async def cud():
    """增删改"""
 
    # 新增 返回 一个 UserModel null default  ziduan weiyi
    # await UserModel.create(username="888", balance=22.135)
 
    # 更新 - 返回改动行数 filter tiaojian k
    await UserModel.filter(username="888").update(gender=Gender.MAN)  # 0
    # await UserModel.filter(username="888").update(gender=0)
 
    # 删除 - 返回改动行数
    # await UserModel.filter(username="888").delete()
 
    # 批量创建 - [UserModel,]
    # await UserModel.bulk_create(
    #     [UserModel(username=f"{i}", balance=i) for i in range(2)]
    # )
 
    # 批量更新
    # users = await UserModel.all()
    # for user in users:
    #     user.gender = 0
 
    # await UserModel.bulk_update(users, fields=["gender"])
 
 
async def init():
    # Here we create a SQLite DB using file "db.sqlite3"
    #  also specify the app name of "models"
    #  which contain models from "app.models"
    await Tortoise.init(
        # 数据库连接
        db_url="sqlite://basic.sqlite3",
        # 连接mysql pip install aiomysql
        # db_url='mysql://root:123456@127.0.0.1:3306/tortoise',
        # 指定管理的models，__main__ ️当前文件的models.Model
        modules={"models": ["__main__"]},
    )
    # Generate the schema
    await Tortoise.generate_schemas()
    await cud()
 
 
if __name__ == "__main__":
    from tortoise import Tortoise, run_async
 
    from logger import logger_db_client
 
    run_async(init())