Membangun API CRUD JSON

Pengantar FastAPI

Matt Eckerle

Software and Data Engineering Leader

Empat Langkah Siklus Hidup Manajemen Objek (CRUD)

Buat, Baca, Perbarui, dan Hapus pada Database

Operasi API

Create

Operasi POST

Read

Operasi GET

Update

Operasi PUT

Delete

Operasi DELETE

Motivasi API CRUD JSON

Dasar-dasar

Kelola seluruh siklus hidup objek
Pahami praktik terbaik operasi API HTTP
Rancang API manajemen data kita sendiri

Peluang

Logika bisnis untuk operasi data yang lebih kompleks
Pipeline data ber-throughput tinggi
Pipeline inferensi Machine Learning

Membangun Modul CRUD

from pydantic import BaseModel

class Review(BaseModel):
    movie: str
    num_stars: int
    text: str

class DbReview(BaseModel):
    movie: str
    num_stars: int
    text: str
    # Reference database ID of Reviews
    review_id: int

# crud.py
def create_review(review: Review):
    # Create review in database

def read_review(review_id: int):
    # Read review from database

def update_review(review: DbReview):
    # Update review in database

def delete_review(review_id: int):
    # Delete review from database

Endpoint POST untuk Membuat

Endpoint: /reviews
Input: Review
Output: DbReview

@app.post("/reviews", response_model=DbReview)
def create_review(review: Review):
    # Create the movie review in the database
    db_review = crud.create_review(review)
    # Return the created review with database ID
    return db_review

Endpoint GET untuk Membaca

Endpoint: /reviews
Input: ?review_id=1234
Output: DbReview

@app.get("/reviews", response_model=DbReview)
def read_review(review_id: int):
    # Read the movie review from the database
    db_review = crud.read_review(review_id)
    # Return the review
    return db_review

Endpoint PUT untuk Memperbarui

Endpoint: /reviews
Input: DbReview
Output: DbReview

@app.put("/reviews", response_model=DbReview)
def update_review(review: DbReview):
    # Update the movie review in the database
    db_review = crud.update_review(review)
    # Return the updated review
    return db_review

Endpoint DELETE untuk Menghapus

Endpoint: /reviews
Input: DbReview
Output: {}

@app.delete("/reviews")
def delete_review(review: DbReview):
    # Delete the movie review from the database
    crud.delete_review(review.review_id)
    # Return nothing since the data is gone
    return {}

Ayo berlatih!

Pengantar FastAPI