main.py

import datetime

from fastapi import FastAPI
from pydantic.main import BaseModel

app = FastAPI()


class CreateTodo(BaseModel):
    name: str
    done: bool


class Todo(BaseModel):
    id: int
    name: str
    done: bool
    created_at: datetime.datetime


todos = [
    Todo(id=1, name='Wash the car.', done=True, created_at='2020-08-10T21:38:27.798106'),
    Todo(id=2, name='Deploy to production', done=False, created_at='2020-10-07T11:32:27.798134'),
    Todo(id=3, name='Kiss your wife', done=False, created_at='2020-10-31T13:01:11.123106'),
]


@app.post('/todos/')
def create_todo(todo_params: CreateTodo):
    todo = Todo(
        id=len(todos) + 1,
        name=todo_params.name,
        done=todo_params.done,
        created_at=datetime.datetime.now()
    )
    todos.append(todo)

    return todo


@app.get('/todos/{todo_id}')
def get_todo_by_id(todo_id: int):
    todo = next(
        todo
        for todo in todos
        if todo.id == todo_id
    )

    return todo


@app.get('/todos/')
def filter_todos_by_done(done: bool):
    matched_todos = [
        todo
        for todo in todos
        if todo.done == done
    ]

    return matched_todos

# http://localhost:8000/docs