#query-parameters code explainers

java

@RestController
@RequestMapping("/api/products")
public class ProductSearchController {

Binding collection query params in Spring

rest-api query-parameters dependency-injection

Intermediate 6 steps

java

public URI buildSearchUri(String query, int page, int size, List<String> tags) {
    UriComponentsBuilder builder = UriComponentsBuilder
            .fromUriString("https://api.example.com")
            .path("/v2/products/search")

Building URIs safely with UriComponentsBuilder in Spring

url-building builder-pattern encoding

Intermediate 5 steps

go

func ListArticles(db *gorm.DB) gin.HandlerFunc {
	return func(c *gin.Context) {
		page, err := strconv.Atoi(c.DefaultQuery("page", "1"))
		if err != nil || page < 1 {

Building a paginated list endpoint in Gin

pagination query-parameters input-validation

Intermediate 8 steps

javascript

const express = require('express');
const router = express.Router();
const db = require('../db');

Building a paginated articles endpoint in Express

pagination input-validation async-await

Intermediate 8 steps

python

from datetime import date
from enum import Enum
from typing import Annotated

Reusable query params with Pydantic in FastAPI

query-parameters validation pagination

Intermediate 8 steps

rust

use axum::{
    extract::{Query, State},
    http::StatusCode,
    Json,

Paginated, filtered product listing in Axum

pagination query-parameters sql-filtering

Intermediate 8 steps