peewee 需要支持mysql json 类型

一、基础model

class User(Model):
    name = CharField(unique=True)
    some_json_data = CharField()
    requested_at = DateTimeField(default=datetime.now())

二、自定义字段 json 字段

class JSONField(TextField):
    def db_value(self, value):
        return json.dumps(value)

    def python_value(self, value):
        if value is not None:
            return json.loads(value)

三、自定义字段 json 字段

class User(Model):
    name = CharField(unique=True)
    some_json_data = JSONField()
    requested_at = DateTimeField(default=datetime.now())

定义一个JSONField自动执行 json 加载/转储的自定义类型
https://*.com/questions/40553790/peewee-orm-jsonfield-for-mysql

http://docs.peewee-orm.com/en/latest/peewee/models.html#creating-a-custom-field