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- 实现个人资料更新和密码修改- 配置数据库连接和 Alembic 迁移 - 添加健康检查和系统统计接口 - 实现自定义错误处理和响应格式 - 配置 FastAPI 应用和中间件
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79
fastapi-backend/alembic/env.py
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79
fastapi-backend/alembic/env.py
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from logging.config import fileConfig
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from sqlalchemy import engine_from_config
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from sqlalchemy import pool
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from alembic import context
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# 导入模型
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from app.models.user import Base
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# 导入配置
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from app.core.config import settings
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# 确保Python能够找到app模块
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import os
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import sys
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sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
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# 这是Alembic Config对象,它提供对.ini文件中值的访问
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config = context.config
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# 解释配置文件并设置日志记录器
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if config.config_file_name is not None:
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fileConfig(config.config_file_name)
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# 添加你的模型元数据对象
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target_metadata = Base.metadata
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# 其他值来自config,可以通过以下方式定义:
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# my_important_option = config.get_main_option("my_important_option")
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# ... 等等。
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def run_migrations_offline() -> None:
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"""在'offline'模式下运行迁移。
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这配置了上下文,只需要一个URL,并且不要求引擎可用。
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跳过引擎创建,甚至不需要DBAPI可用。
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调用context.execute()来执行迁移。
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"""
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url = config.get_main_option("sqlalchemy.url")
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context.configure(
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url=url,
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target_metadata=target_metadata,
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literal_binds=True,
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dialect_opts={"paramstyle": "named"},
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)
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with context.begin_transaction():
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context.run_migrations()
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def run_migrations_online() -> None:
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"""在'online'模式下运行迁移。
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在这种情况下,我们创建了一个Engine并将其与迁移上下文关联。
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"""
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connectable = engine_from_config(
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config.get_section(config.config_ini_section, {}),
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prefix="sqlalchemy.",
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poolclass=pool.NullPool,
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)
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with connectable.connect() as connection:
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context.configure(
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connection=connection, target_metadata=target_metadata
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)
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with context.begin_transaction():
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context.run_migrations()
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if context.is_offline_mode():
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run_migrations_offline()
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else:
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run_migrations_online()
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62
fastapi-backend/alembic/versions/0001_initial_migration.py
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fastapi-backend/alembic/versions/0001_initial_migration.py
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"""initial migration
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Revision ID: 0001
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Revises:
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Create Date: 2025-09-11 16:00:00.000000
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"""
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from alembic import op
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import sqlalchemy as sa
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# revision identifiers, used by Alembic.
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revision = '0001'
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down_revision = None
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branch_labels = None
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depends_on = None
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def upgrade():
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# 创建用户表
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op.create_table(
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'users',
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sa.Column('id', sa.Integer, primary_key=True, index=True),
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sa.Column('username', sa.String(50), unique=True, index=True, nullable=False),
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sa.Column('password_hash', sa.String(255), nullable=False),
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sa.Column('user_type', sa.Enum('farmer', 'merchant', 'admin', 'super_admin'), server_default='farmer'),
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sa.Column('real_name', sa.String(50)),
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sa.Column('nickname', sa.String(50)),
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sa.Column('avatar_url', sa.String(255)),
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sa.Column('email', sa.String(100), unique=True, index=True),
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sa.Column('phone', sa.String(20), unique=True, index=True),
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sa.Column('gender', sa.Enum('male', 'female', 'other'), server_default='other'),
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sa.Column('birthday', sa.DateTime),
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sa.Column('status', sa.Enum('active', 'inactive'), server_default='active'),
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sa.Column('wechat_openid', sa.String(100), unique=True, index=True),
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sa.Column('wechat_unionid', sa.String(100), unique=True, index=True),
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sa.Column('level', sa.Integer, server_default='1'),
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sa.Column('created_at', sa.DateTime, server_default=sa.func.now()),
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sa.Column('updated_at', sa.DateTime, server_default=sa.func.now(), onupdate=sa.func.now()),
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sa.Column('last_login', sa.DateTime)
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)
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# 创建管理员表
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op.create_table(
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'admins',
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sa.Column('id', sa.Integer, primary_key=True, index=True),
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sa.Column('username', sa.String(50), unique=True, index=True, nullable=False),
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sa.Column('password', sa.String(255), nullable=False),
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sa.Column('email', sa.String(100), unique=True, index=True),
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sa.Column('nickname', sa.String(50)),
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sa.Column('avatar', sa.String(255)),
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sa.Column('role', sa.Enum('admin', 'super_admin'), server_default='admin'),
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sa.Column('status', sa.Enum('active', 'inactive'), server_default='active'),
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sa.Column('last_login', sa.DateTime),
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sa.Column('created_at', sa.DateTime, server_default=sa.func.now()),
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sa.Column('updated_at', sa.DateTime, server_default=sa.func.now(), onupdate=sa.func.now())
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)
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def downgrade():
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op.drop_table('admins')
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op.drop_table('users')
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