How jagadish210523-lgtm/fastapi-with-mysql works
This is a small FastAPI service for creating, listing, retrieving, updating, and deleting posts stored in MySQL. A client sends requests to the post endpoints; each endpoint uses a dependency-provided SQLAlchemy session to query or modify mapped post records, then returns results (or a not-found error). On startup, the application creates mapped tables. The source defines a User model, but no user endpoints or relationship are shown; user_id is stored as an integer. The graph reflects the supplied source excerpts.
Main entry points: main.py Post endpoints · database.py SQLAlchemy engine · models.py Post ORM model
Components 9
HTTP API
- Post endpoints
main.py - Post request schema
main.py
Persistence
- DB session dependency
main.py - Session factory
database.py - SQLAlchemy engine
database.py - Post ORM model
models.py - User ORM model
models.py
Other components
- API client
- MySQL database
Connections 9
- API client → Post endpoints: sends requests
- Post endpoints → API client: returns results
- Post endpoints → Post request schema: validates input
- Post endpoints → DB session dependency: depends on
- DB session dependency → Session factory: creates session
- Session factory → SQLAlchemy engine: binds to
- Post endpoints → Post ORM model: queries and mutates
- SQLAlchemy engine → MySQL database: executes database operations
- Post endpoints → SQLAlchemy engine: creates tables at startup