我在创建初始迁移时遇到问题，该迁移将自动包含我在 models.py 中使用共享基础（declarative_base）定义的表。
当我输入命令时：
alembic revision --autogenerate
alembic 创建一个空文件。
我的配置或方法有什么问题？
项目.base.py：
from sqlalchemy.ext.declarative import declarative_base
Base = declarative_base()
环境.py：
import sys
import os
sys.path.append(os.path.abspath(os.getcwd()))
from alembic import context
from sqlalchemy import engine_from_config, pool
from logging.config import fileConfig
from project.base import Base
target_metadata = Base.metadata
def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
engine = engine_from_config(
config.get_section(config.config_ini_section),
prefix='sqlalchemy.',
poolclass=pool.NullPool)
connection = engine.connect()
context.configure(
connection=connection,
target_metadata=target_metadata
)
# target_metadata.reflect(engine, only=[
# "django_migrations",
# "auth_group_permissions",
# "django_session",
# "auth_user_user_permissions",
# "auth_user_groups",
# "django_admin_log",
# "auth_permission",
# "auth_user",
# "sysdiagrams",
# "django_content_type",
# "auth_group",
# "sysdiagrams",
# ])
try:
with context.begin_transaction():
context.run_migrations()
finally:
connection.close()
if context.is_offline_mode():
run_migrations_offline()
else:
run_migrations_online()
样品型号：
# -*- coding: utf-8 -*-
from sqlalchemy import Column, Integer, String, DateTime, Boolean, ForeignKey, SmallInteger
from sqlalchemy.orm import relationship, backref
from project.base import Base
__schema__ = "Users"
class User(Base):
__tablename__ = "User"
__table_args__ = {'schema': __schema__}
USER_CUSTOMER = 0
USER_EMPLOYEE = 5
USER_ADMIN = 10
USER_TYPES = (
(USER_CUSTOMER, u'Klient'),
(USER_EMPLOYEE, u'Obsługa sklepu'),
(USER_ADMIN, u'Administrator')
)
id = Column(Integer, primary_key=True)
name = Column(String(255))
email = Column(String(255))
password = Column(String)
date_created = Column(DateTime)
date_updated = Column(DateTime)
user_type = Column(SmallInteger)
is_active = Column(Boolean)
def __repr__(self):
return u"<User: ({} {})>".format(self.id, self.name)
def is_management(self):
return self.user_type in [self.USER_EMPLOYEE, self.USER_ADMIN]
def is_admin(self):
return self.user_type == self.USER_ADMIN
编辑：
我发现那Base.metadata.sorted_tables是空的。