Code Explainers

Code explainers tagged #rest-api

java 
@RestController
@RequestMapping("/api/files")
public class FileUploadController {
 

Handling secure file uploads in Spring

file-upload input-validation path-traversal
Intermediate 10 steps
ruby 
module Api
  module V2
    class ArticlesController < Api::BaseController
      before_action :set_article, only: %i[show update destroy]

Building a versioned JSON API controller in Rails

rest-api serialization pagination
Intermediate 10 steps
java 
@RestController
@RequestMapping("/api/users")
public class UserController {
 

How a Spring REST controller maps users

rest-api dependency-injection dto-mapping
Intermediate 7 steps
python 
from fastapi import Depends, FastAPI, HTTPException
from sqlalchemy import create_engine
from sqlalchemy.orm import Session, sessionmaker
 

Wiring SQLAlchemy sessions into FastAPI

dependency-injection orm sessions
Intermediate 7 steps
python 
from flask import Blueprint, jsonify, request, abort
 
from .models import Article, db
from .schemas import article_schema, articles_schema

Building a REST articles API with Flask Blueprints

rest-api blueprints serialization
Intermediate 7 steps
java 
@RestController
@RequestMapping("/api/users")
public class UserController {
 

Bean Validation in a Spring REST controller

validation rest-api exception-handling
Intermediate 9 steps
javascript 
const asyncHandler = (fn) => (req, res, next) => {
  Promise.resolve(fn(req, res, next)).catch(next);
};
 

Async error handling in Express routes

async-await error-handling middleware
Intermediate 7 steps
ruby 
class Api::V1::ArticlesController < Api::V1::BaseController
  def index
    articles = Article
      .published

Building a JSON:API endpoint in Rails

serialization eager-loading pagination
Intermediate 7 steps
php 
<?php
 
namespace App\Http\Controllers\Auth;
 

How a Laravel registration endpoint works

validation database-transactions events
Intermediate 8 steps
rust 
use axum::{
    extract::{Path, State},
    routing::{get, post},
    Json, Router,

Building a nested REST API router in Axum

routing extractors shared-state
Intermediate 8 steps
java 
@RestController
@RequestMapping("/api/products")
public class ProductController {
 

How a paginated REST controller works in Spring

pagination dto-mapping dependency-injection
Intermediate 8 steps