Create FastAPI REST API with SQLite

Features:
- Project structure with FastAPI framework
- SQLAlchemy models with SQLite database
- Alembic migrations system
- CRUD operations for items
- API routers with endpoints for items
- Health endpoint for monitoring
- Error handling and validation
- Comprehensive documentation

README.md

@@ -1,3 +1,198 @@
-# FastAPI Application
+# Generic REST API Service
 
-This is a FastAPI application bootstrapped by BackendIM, the AI-powered backend generation platform.
+A generic REST API service built with FastAPI and SQLite.
+
+## Features
+
+- FastAPI framework for high performance
+- SQLite database with SQLAlchemy ORM
+- Alembic for database migrations
+- CRUD operations for resource management
+- Pydantic models for request/response validation
+- Error handling with custom exceptions
+- API documentation (Swagger UI and ReDoc)
+- Health check endpoint
+
+## Project Structure
+
+```
+.
+├── app                     # Application package
+│   ├── api                 # API endpoints
+│   │   ├── v1              # API version 1
+│   │   │   ├── health.py   # Health check endpoint
+│   │   │   └── items.py    # Items endpoints
+│   │   ├── deps.py         # Dependencies
+│   │   ├── errors.py       # Error handlers and custom exceptions
+│   │   └── router.py       # Main router
+│   ├── core                # Core modules
+│   │   └── config.py       # Configuration settings
+│   ├── crud                # CRUD operations
+│   │   ├── base.py         # Base CRUD class
+│   │   └── crud_item.py    # Item CRUD operations
+│   ├── db                  # Database
+│   │   ├── base.py         # Base imports for Alembic
+│   │   ├── base_class.py   # Base class for models
+│   │   └── session.py      # Database session
+│   ├── models              # SQLAlchemy models
+│   │   └── item.py         # Item model
+│   └── schemas             # Pydantic schemas
+│       └── item.py         # Item schemas
+├── migrations              # Alembic migrations
+│   ├── versions            # Migration versions
+│   │   └── 001_initial_migration.py  # Initial migration
+│   ├── env.py              # Alembic environment
+│   └── script.py.mako      # Migration script template
+├── alembic.ini             # Alembic configuration
+├── main.py                 # Application entry point
+└── requirements.txt        # Dependencies
+```
+
+## Setup and Installation
+
+1. Clone the repository:
+```bash
+git clone https://github.com/your-username/genericrestapiservice.git
+cd genericrestapiservice
+```
+
+2. Create and activate a virtual environment:
+```bash
+python -m venv venv
+source venv/bin/activate  # On Windows: venv\Scripts\activate
+```
+
+3. Install dependencies:
+```bash
+pip install -r requirements.txt
+```
+
+4. Run database migrations:
+```bash
+alembic upgrade head
+```
+
+5. Start the application:
+```bash
+uvicorn main:app --reload
+```
+
+The API will be available at http://localhost:8000.
+
+## API Documentation
+
+- Swagger UI: http://localhost:8000/docs
+- ReDoc: http://localhost:8000/redoc
+
+## API Endpoints
+
+### Health Check
+
+- `GET /api/v1/health` - Check API and database health
+
+### Items
+
+- `GET /api/v1/items` - Get all items
+- `POST /api/v1/items` - Create a new item
+- `GET /api/v1/items/{item_id}` - Get an item by ID
+- `PUT /api/v1/items/{item_id}` - Update an item
+- `DELETE /api/v1/items/{item_id}` - Delete an item
+
+## Example Usage
+
+### Create an item
+
+```bash
+curl -X 'POST' \
+  'http://localhost:8000/api/v1/items' \
+  -H 'Content-Type: application/json' \
+  -d '{
+  "title": "My First Item",
+  "description": "This is an example item",
+  "is_active": true
+}'
+```
+
+### Get all items
+
+```bash
+curl -X 'GET' 'http://localhost:8000/api/v1/items'
+```
+
+### Get an item by ID
+
+```bash
+curl -X 'GET' 'http://localhost:8000/api/v1/items/1'
+```
+
+### Update an item
+
+```bash
+curl -X 'PUT' \
+  'http://localhost:8000/api/v1/items/1' \
+  -H 'Content-Type: application/json' \
+  -d '{
+  "title": "Updated Item",
+  "description": "This item has been updated"
+}'
+```
+
+### Delete an item
+
+```bash
+curl -X 'DELETE' 'http://localhost:8000/api/v1/items/1'
+```
+
+## Database Configuration
+
+The API uses SQLite as the database engine. The database file is located at `/app/storage/db/db.sqlite`. This path is configured in `app/core/config.py`. You can change the database configuration by modifying this file.
+
+## Running with Docker
+
+You can use Docker to run the API. Here's an example Dockerfile:
+
+```dockerfile
+FROM python:3.11-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+# Create storage directory
+RUN mkdir -p /app/storage/db
+
+# Run migrations
+RUN alembic upgrade head
+
+# Expose the port
+EXPOSE 8000
+
+# Run the application
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]
+```
+
+To build and run the Docker container:
+
+```bash
+docker build -t genericrestapiservice .
+docker run -p 8000:8000 genericrestapiservice
+```
+
+## Development
+
+### Code Style
+
+This project uses Ruff for linting and formatting. To lint the code:
+
+```bash
+ruff check .
+```
+
+To format the code:
+
+```bash
+ruff format .
+```

alembic.ini

@@ -0,0 +1,85 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts
+script_location = migrations
+
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# timezone to use when rendering the date
+# within the migration file as well as the filename.
+# string value is passed to dateutil.tz.gettz()
+# leave blank for localtime
+# timezone =
+
+# max length of characters to apply to the
+# "slug" field
+# truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+# set to 'true' to allow .pyc and .pyo files without
+# a source .py file to be detected as revisions in the
+# versions/ directory
+# sourceless = false
+
+# version location specification; this defaults
+# to migrations/versions.  When using multiple version
+# directories, initial revisions must be specified with --version-path
+# version_locations = %(here)s/bar %(here)s/bat migrations/versions
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+# SQLite URL - use absolute path for SQLite
+sqlalchemy.url = sqlite:////app/storage/db/db.sqlite
+
+[post_write_hooks]
+# post_write_hooks defines scripts or Python functions that are run
+# on newly generated revision scripts.  See the documentation for further
+# detail and examples
+
+# format using "black" - use the console_scripts runner, against the "black" entrypoint
+# hooks=black
+# black.type=console_scripts
+# black.entrypoint=black
+# black.options=-l 79
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

app/api/deps.py

@@ -0,0 +1 @@
+

app/api/errors.py

@@ -0,0 +1,42 @@
+from fastapi import HTTPException, Request, status
+from fastapi.responses import JSONResponse
+
+
+class BaseAPIException(HTTPException):
+    def __init__(
+        self,
+        status_code: int,
+        detail: str = None,
+        headers: dict = None,
+    ):
+        super().__init__(status_code=status_code, detail=detail, headers=headers)
+
+
+class ItemNotFoundException(BaseAPIException):
+    def __init__(self, item_id: int):
+        super().__init__(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"Item with ID {item_id} not found",
+        )
+
+
+class ValidationError(BaseAPIException):
+    def __init__(self, detail: str = "Validation error"):
+        super().__init__(
+            status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
+            detail=detail,
+        )
+
+
+async def validation_exception_handler(request: Request, exc: ValidationError):
+    return JSONResponse(
+        status_code=exc.status_code,
+        content={"detail": exc.detail},
+    )
+
+
+async def item_not_found_handler(request: Request, exc: ItemNotFoundException):
+    return JSONResponse(
+        status_code=exc.status_code,
+        content={"detail": exc.detail},
+    )

app/api/router.py

@@ -0,0 +1,7 @@
+from fastapi import APIRouter
+
+from app.api.v1 import items, health
+
+api_router = APIRouter()
+api_router.include_router(health.router, prefix="/health", tags=["health"])
+api_router.include_router(items.router, prefix="/items", tags=["items"])

app/api/v1/health.py

@@ -0,0 +1,15 @@
+from fastapi import APIRouter, Depends
+from sqlalchemy.orm import Session
+
+from app.db.session import get_db
+
+router = APIRouter()
+
+
+@router.get("", status_code=200)
+def health_check(db: Session = Depends(get_db)):
+    """
+    Health check endpoint to verify API is running and database connection is working.
+    """
+    health_status = {"status": "ok", "database": "connected" if db else "disconnected"}
+    return health_status

app/api/v1/items.py

@@ -0,0 +1,90 @@
+from typing import Any, List, Optional
+
+from fastapi import APIRouter, Depends, status
+from sqlalchemy.orm import Session
+
+from app import crud, schemas
+from app.api.errors import ItemNotFoundException
+from app.db.session import get_db
+
+router = APIRouter()
+
+
+@router.get("", response_model=List[schemas.Item])
+def read_items(
+    db: Session = Depends(get_db),
+    skip: int = 0,
+    limit: int = 100,
+    is_active: Optional[bool] = None,
+) -> Any:
+    """
+    Retrieve items.
+    """
+    if is_active is not None:
+        items = crud.item.get_multi_by_active(
+            db, skip=skip, limit=limit, is_active=is_active
+        )
+    else:
+        items = crud.item.get_multi(db, skip=skip, limit=limit)
+    return items
+
+
+@router.post("", response_model=schemas.Item, status_code=status.HTTP_201_CREATED)
+def create_item(
+    *,
+    db: Session = Depends(get_db),
+    item_in: schemas.ItemCreate,
+) -> Any:
+    """
+    Create new item.
+    """
+    item = crud.item.create(db=db, obj_in=item_in)
+    return item
+
+
+@router.get("/{item_id}", response_model=schemas.Item)
+def read_item(
+    *,
+    db: Session = Depends(get_db),
+    item_id: int,
+) -> Any:
+    """
+    Get item by ID.
+    """
+    item = crud.item.get(db=db, id=item_id)
+    if not item:
+        raise ItemNotFoundException(item_id=item_id)
+    return item
+
+
+@router.put("/{item_id}", response_model=schemas.Item)
+def update_item(
+    *,
+    db: Session = Depends(get_db),
+    item_id: int,
+    item_in: schemas.ItemUpdate,
+) -> Any:
+    """
+    Update an item.
+    """
+    item = crud.item.get(db=db, id=item_id)
+    if not item:
+        raise ItemNotFoundException(item_id=item_id)
+    item = crud.item.update(db=db, db_obj=item, obj_in=item_in)
+    return item
+
+
+@router.delete("/{item_id}", response_model=schemas.Item)
+def delete_item(
+    *,
+    db: Session = Depends(get_db),
+    item_id: int,
+) -> Any:
+    """
+    Delete an item.
+    """
+    item = crud.item.get(db=db, id=item_id)
+    if not item:
+        raise ItemNotFoundException(item_id=item_id)
+    item = crud.item.remove(db=db, id=item_id)
+    return item

app/core/config.py

@@ -0,0 +1,23 @@
+from pathlib import Path
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    API_V1_STR: str = "/api/v1"
+    PROJECT_NAME: str = "Generic REST API Service"
+    PROJECT_DESCRIPTION: str = (
+        "A generic REST API service built with FastAPI and SQLite"
+    )
+    VERSION: str = "0.1.0"
+
+    # Database configuration
+    DB_DIR = Path("/app") / "storage" / "db"
+    DB_DIR.mkdir(parents=True, exist_ok=True)
+
+    SQLALCHEMY_DATABASE_URL: str = f"sqlite:///{DB_DIR}/db.sqlite"
+
+    class Config:
+        case_sensitive = True
+
+
+settings = Settings()

app/crud/__init__.py

@@ -0,0 +1 @@
+from .crud_item import item as item  # noqa: F401

app/crud/base.py

@@ -0,0 +1,66 @@
+from typing import Any, Dict, Generic, List, Optional, Type, TypeVar, Union
+
+from fastapi.encoders import jsonable_encoder
+from pydantic import BaseModel
+from sqlalchemy.orm import Session
+
+from app.db.base_class import Base
+
+ModelType = TypeVar("ModelType", bound=Base)
+CreateSchemaType = TypeVar("CreateSchemaType", bound=BaseModel)
+UpdateSchemaType = TypeVar("UpdateSchemaType", bound=BaseModel)
+
+
+class CRUDBase(Generic[ModelType, CreateSchemaType, UpdateSchemaType]):
+    def __init__(self, model: Type[ModelType]):
+        """
+        CRUD object with default methods to Create, Read, Update, Delete (CRUD).
+
+        **Parameters**
+
+        * `model`: A SQLAlchemy model class
+        * `schema`: A Pydantic model (schema) class
+        """
+        self.model = model
+
+    def get(self, db: Session, id: Any) -> Optional[ModelType]:
+        return db.query(self.model).filter(self.model.id == id).first()
+
+    def get_multi(
+        self, db: Session, *, skip: int = 0, limit: int = 100
+    ) -> List[ModelType]:
+        return db.query(self.model).offset(skip).limit(limit).all()
+
+    def create(self, db: Session, *, obj_in: CreateSchemaType) -> ModelType:
+        obj_in_data = jsonable_encoder(obj_in)
+        db_obj = self.model(**obj_in_data)  # type: ignore
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+    def update(
+        self,
+        db: Session,
+        *,
+        db_obj: ModelType,
+        obj_in: Union[UpdateSchemaType, Dict[str, Any]],
+    ) -> ModelType:
+        obj_data = jsonable_encoder(db_obj)
+        if isinstance(obj_in, dict):
+            update_data = obj_in
+        else:
+            update_data = obj_in.model_dump(exclude_unset=True)
+        for field in obj_data:
+            if field in update_data:
+                setattr(db_obj, field, update_data[field])
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+    def remove(self, db: Session, *, id: int) -> ModelType:
+        obj = db.query(self.model).get(id)
+        db.delete(obj)
+        db.commit()
+        return obj

app/crud/crud_item.py

@@ -0,0 +1,26 @@
+from typing import List, Optional
+
+from sqlalchemy.orm import Session
+
+from app.crud.base import CRUDBase
+from app.models.item import Item
+from app.schemas.item import ItemCreate, ItemUpdate
+
+
+class CRUDItem(CRUDBase[Item, ItemCreate, ItemUpdate]):
+    def get_by_title(self, db: Session, *, title: str) -> Optional[Item]:
+        return db.query(Item).filter(Item.title == title).first()
+
+    def get_multi_by_active(
+        self, db: Session, *, skip: int = 0, limit: int = 100, is_active: bool = True
+    ) -> List[Item]:
+        return (
+            db.query(Item)
+            .filter(Item.is_active == is_active)
+            .offset(skip)
+            .limit(limit)
+            .all()
+        )
+
+
+item = CRUDItem(Item)

app/db/base.py

@@ -0,0 +1,4 @@
+# Import all the models, so that Base has them before being
+# imported by Alembic
+from app.db.base_class import Base  # noqa
+from app.models.item import Item  # noqa

app/db/base_class.py

@@ -0,0 +1,14 @@
+from typing import Any
+
+from sqlalchemy.ext.declarative import as_declarative, declared_attr
+
+
+@as_declarative()
+class Base:
+    id: Any
+    __name__: str
+
+    # Generate __tablename__ automatically based on class name
+    @declared_attr
+    def __tablename__(cls) -> str:
+        return cls.__name__.lower()

app/db/session.py

@@ -0,0 +1,22 @@
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+
+from app.core.config import settings
+
+# Create an engine for the database
+engine = create_engine(
+    settings.SQLALCHEMY_DATABASE_URL,
+    connect_args={"check_same_thread": False},  # Needed for SQLite
+)
+
+# Create a SessionLocal class for session creation
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+
+# Dependency to get the database session
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()

app/models/item.py

@@ -0,0 +1,15 @@
+from sqlalchemy import Column, Integer, String, Boolean, Text, DateTime
+from sqlalchemy.sql import func
+
+from app.db.base_class import Base
+
+
+class Item(Base):
+    id = Column(Integer, primary_key=True, index=True)
+    title = Column(String(100), index=True)
+    description = Column(Text, nullable=True)
+    is_active = Column(Boolean, default=True)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(
+        DateTime(timezone=True), server_default=func.now(), onupdate=func.now()
+    )

app/schemas/__init__.py

@@ -0,0 +1,6 @@
+from .item import (  # noqa: F401
+    Item as Item,
+    ItemCreate as ItemCreate,
+    ItemUpdate as ItemUpdate,
+    ItemInDBBase as ItemInDBBase,
+)

app/schemas/item.py

@@ -0,0 +1,46 @@
+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel, Field
+
+
+# Shared properties
+class ItemBase(BaseModel):
+    title: str = Field(
+        ..., min_length=1, max_length=100, description="Title of the item"
+    )
+    description: Optional[str] = Field(
+        None, description="Optional description of the item"
+    )
+    is_active: bool = Field(True, description="Is this item active")
+
+
+# Properties to receive via API on creation
+class ItemCreate(ItemBase):
+    pass
+
+
+# Properties to receive via API on update
+class ItemUpdate(BaseModel):
+    title: Optional[str] = Field(
+        None, min_length=1, max_length=100, description="Title of the item"
+    )
+    description: Optional[str] = Field(
+        None, description="Optional description of the item"
+    )
+    is_active: Optional[bool] = Field(None, description="Is this item active")
+
+
+# Properties shared by models stored in DB
+class ItemInDBBase(ItemBase):
+    id: int
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+# Properties to return to client
+class Item(ItemInDBBase):
+    pass

main.py

@@ -0,0 +1,53 @@
+import uvicorn
+from fastapi import FastAPI, Request
+from fastapi.responses import JSONResponse
+from pydantic import ValidationError
+
+from app.api.errors import (
+    ItemNotFoundException,
+    validation_exception_handler,
+    item_not_found_handler,
+)
+from app.api.router import api_router
+from app.core.config import settings
+
+app = FastAPI(
+    title=settings.PROJECT_NAME,
+    description=settings.PROJECT_DESCRIPTION,
+    version=settings.VERSION,
+    openapi_url=f"{settings.API_V1_STR}/openapi.json",
+    docs_url="/docs",
+    redoc_url="/redoc",
+)
+
+# Exception handlers
+app.add_exception_handler(ValidationError, validation_exception_handler)
+app.add_exception_handler(ItemNotFoundException, item_not_found_handler)
+
+
+@app.exception_handler(Exception)
+async def generic_exception_handler(request: Request, exc: Exception):
+    return JSONResponse(
+        status_code=500,
+        content={"detail": "Internal server error"},
+    )
+
+
+app.include_router(api_router, prefix=settings.API_V1_STR)
+
+
+@app.get("/")
+def root():
+    """
+    Root endpoint with API information.
+    """
+    return {
+        "name": settings.PROJECT_NAME,
+        "version": settings.VERSION,
+        "docs": "/docs",
+        "redoc": "/redoc",
+    }
+
+
+if __name__ == "__main__":
+    uvicorn.run("main:app", host="0.0.0.0", port=8000, reload=True)

migrations/env.py

@@ -0,0 +1,80 @@
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+from app.db.base import Base  # noqa
+
+target_metadata = Base.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+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.
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        is_sqlite = connection.dialect.name == "sqlite"
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            render_as_batch=is_sqlite,  # Key configuration for SQLite
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

migrations/script.py.mako

@@ -0,0 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}

migrations/versions/001_initial_migration.py

@@ -0,0 +1,44 @@
+"""Initial migration
+
+Revision ID: 001
+Revises:
+Create Date: 2023-10-08
+
+"""
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.sql import func
+
+# revision identifiers, used by Alembic.
+revision = "001"
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # Create item table
+    op.create_table(
+        "item",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("title", sa.String(length=100), nullable=False),
+        sa.Column("description", sa.Text(), nullable=True),
+        sa.Column("is_active", sa.Boolean(), nullable=True, default=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=func.now()),
+        sa.Column(
+            "updated_at",
+            sa.DateTime(timezone=True),
+            server_default=func.now(),
+            onupdate=func.now(),
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(op.f("ix_item_id"), "item", ["id"], unique=False)
+    op.create_index(op.f("ix_item_title"), "item", ["title"], unique=False)
+
+
+def downgrade():
+    op.drop_index(op.f("ix_item_title"), table_name="item")
+    op.drop_index(op.f("ix_item_id"), table_name="item")
+    op.drop_table("item")

migrations/versions/README

@@ -0,0 +1,3 @@
+This directory contains Alembic migration scripts.
+Each file is a migration step. To apply migrations, run:
+`alembic upgrade head`

requirements.txt

@@ -0,0 +1,10 @@
+fastapi>=0.103.1,<0.104.0
+uvicorn>=0.23.2,<0.24.0
+sqlalchemy>=2.0.21,<2.1.0
+alembic>=1.12.0,<1.13.0
+pydantic>=2.4.2,<2.5.0
+pydantic-settings>=2.0.3,<2.1.0
+python-multipart>=0.0.6,<0.1.0
+email-validator>=2.0.0,<2.1.0
+ruff>=0.0.292,<0.1.0
+pathlib>=1.0.1,<1.1.0