Panduan praktis dan terstruktur mengenai panduan authentication dengan react.js & laravel jwt: menampilkan halaman dashboard (part 8) berstandar enterprise. Pelajari konsep, implementasi kode modern, dan tips arsitektur enterprise siap produksi.
Selamat datang di seri tutorial engineering SiHubung! Pada artikel ini, kita akan membedah secara komprehensif implementasi Panduan Authentication Dengan React.Js & Laravel Jwt: Menampilkan Halaman Dashboard (Part 8) Berstandar Enterprise dengan standar kode bersih (clean code), performa tinggi, dan arsitektur siap produksi.
Membangun aplikasi web di era modern memerlukan pondasi yang kokoh. Framework modern memberikan fleksibilitas luar biasa bagi developer untuk menghadirkan fitur kompleks secara cepat tanpa mengabaikan aspek keamanan dan keandalan sistem.
Tahapan Implementasi & Walkthrough Kode
Berikut adalah langkah demi langkah teknis yang dapat Anda ikuti langsung pada codebase Anda:
Tahap 1: Penulisan Kode & Konfigurasi
//import hook react
import React, { useState, useEffect } from 'react';
//import hook useHitory from react router dom
import { useHistory } from 'react-router';
//import axios
import axios from 'axios';
function Login() {
//define state
const [email, setEmail] = useState("");
const [password, setPassword] = useState("");
//define state validation
const [validation, setValidation] = useState([]);
//define history
const history = useHistory();
//hook useEffect
useEffect(() => {
//check token
if(localStorage.getItem('token')) {
//redirect page dashboard
history.push('/dashboard');
}
}, []);
//function "loginHanlder"
const loginHandler = async (e) => {
e.preventDefault();
//initialize formData
const formData = new FormData();
//append data to formData
formData.append('email', email);
formData.append('password', password);
//send data to server
await axios.post('http://localhost:8000/api/login', formData)
.then((response) => {
//set token on localStorage
localStorage.setItem('token', response.data.token);
//redirect to dashboard
history.push('/dashboard');
})
.catch((error) => {
//assign error to state "validation"
setValidation(error.response.data);
})
};
return (
<div className="container" style={{ marginTop: "120px" }}>
<div className="row justify-content-center">
<div className="col-md-4">
<div className="card border-0 rounded shadow-sm">
<div className="card-body">
<h4 className="fw-bold">HALAMAN LOGIN</h4>
<hr/>
{
validation.message && (
<div className="alert alert-danger">
{validation.message}
</div>
)
}
<form onSubmit={loginHandler}>
<div className="mb-3">
<label className="form-label">ALAMAT EMAIL</label>
<input type="email" className="form-control" value={email} onChange={(e) => setEmail(e.target.value)} placeholder="Masukkan Alamat Email"/>
</div>
{
validation.email && (
<div className="alert alert-danger">
{validation.email[0]}
</div>
)
}
<div className="mb-3">
<label className="form-label">PASSWORD</label>
<input type="password" className="form-control" value={password} onChange={(e) => setPassword(e.target.value)} placeholder="Masukkan Password"/>
</div>
{
validation.password && (
<div className="alert alert-danger">
{validation.password[0]}
</div>
)
}
<div className="d-grid gap-2">
<button type="submit" className="btn btn-primary">LOGIN</button>
</div>
</form>
</div>
</div>
</div>
</div>
</div>
)
}
export default Login;Tahap 2: Penulisan Kode & Konfigurasi
//import hook react
import ..., { ..., useEffect } from 'react';Tahap 3: Penulisan Kode & Konfigurasi
//hook useEffect
useEffect(() => {
//check token
if(localStorage.getItem('token')) {
//redirect page dashboard
history.push('/dashboard');
}
}, []);Tahap 4: Penulisan Kode & Konfigurasi
//import hook react
import React, { useState, useEffect } from 'react';
//import hook useHitory from react router dom
import { useHistory } from 'react-router';
//import axios
import axios from 'axios';
function Dashboard() {
//state user
const [user, setUser] = useState({});
//define history
const history = useHistory();
//token
const token = localStorage.getItem("token");
//function "fetchData"
const fetchData = async () => {
//set axios header dengan type Authorization + Bearer token
axios.defaults.headers.common['Authorization'] = `Bearer ${token}`
//fetch user from Rest API
await axios.get('http://localhost:8000/api/user')
.then((response) => {
//set response user to state
setUser(response.data);
})
}
//hook useEffect
useEffect(() => {
//check token empty
if(!token) {
//redirect login page
history.push('/');
}
//call function "fetchData"
fetchData();
}, []);
//function logout
const logoutHanlder = async () => {
//set axios header dengan type Authorization + Bearer token
axios.defaults.headers.common['Authorization'] = `Bearer ${token}`
//fetch Rest API
await axios.post('http://localhost:8000/api/logout')
.then(() => {
//remove token from localStorage
localStorage.removeItem("token");
//redirect halaman login
history.push('/');
});
};
return (
<div className="container" style={{ marginTop: "50px" }}>
<div className="row justify-content-center">
<div className="col-md-12">
<div className="card border-0 rounded shadow-sm">
<div className="card-body">
SELAMAT DATANG <strong className="text-uppercase">{user.name}</strong>
<hr />
<button onClick={logoutHanlder} className="btn btn-md btn-danger">LOGOUT</button>
</div>
</div>
</div>
</div>
</div>
)
}
export default Dashboard;Tahap 5: Penulisan Kode & Konfigurasi
//import hook react
import React, { useState, useEffect } from 'react';Tahap 6: Penulisan Kode & Konfigurasi
//import hook useHitory from react router dom
import { useHistory } from 'react-router';Tahap 7: Penulisan Kode & Konfigurasi
//import axios
import axios from 'axios';Tahap 8: Penulisan Kode & Konfigurasi
//state user
const [user, setUser] = useState({});Tahap 9: Penulisan Kode & Konfigurasi
//define history
const history = useHistory();Tahap 10: Penulisan Kode & Konfigurasi
//token
const token = localStorage.getItem("token");Tahap 11: Penulisan Kode & Konfigurasi
//set axios header dengan type Authorization + Bearer token
axios.defaults.headers.common['Authorization'] = `Bearer ${token}`
//fetch user from Rest API
await axios.get('http://localhost:8000/api/user')Tahap 12: Penulisan Kode & Konfigurasi
//set response user to state
setUser(response.data);Tahap 13: Penulisan Kode & Konfigurasi
//hook useEffect
useEffect(() => {
//check token empty
if(!token) {
//redirect login page
history.push('/');
}
//call function "fetchData"
fetchData();
}, []);Tahap 14: Penulisan Kode & Konfigurasi
SELAMAT DATANG <strong className="text-uppercase">{user.name}</strong>Tahap 15: Penulisan Kode & Konfigurasi
<button onClick={logoutHanlder} className="btn btn-md btn-danger">LOGOUT</button>Tahap 16: Penulisan Kode & Konfigurasi
//function logout
const logoutHanlder = async () => {
//set axios header dengan type Authorization + Bearer token
axios.defaults.headers.common['Authorization'] = `Bearer ${token}`
//fetch Rest API
await axios.post('http://localhost:8000/api/logout')
.then(() => {
//remove token from localStorage
localStorage.removeItem("token");
//redirect halaman login
history.push('/');
});
};Tahap 17: Penulisan Kode & Konfigurasi
//set axios header dengan type Authorization + Bearer token
axios.defaults.headers.common['Authorization'] = `Bearer ${token}`
//fetch Rest API
await axios.post('http://localhost:8000/api/logout')Tahap 18: Penulisan Kode & Konfigurasi
//remove token from localStorage
localStorage.removeItem("token");Tahap 19: Penulisan Kode & Konfigurasi
//redirect halaman login
history.push('/');
💡 Tips Rekayasa Perangkat Lunak (SiHubung Engineering Best Practice)
Selalu gunakan pendekatan deklaratif, validasi input seawal mungkin di boundary layer, dan lakukan logging terstruktur untuk memudahkan observability ketika sistem dijalankan di lingkungan cloud produksi.
Kesimpulan
Dengan mengikuti langkah-langkah terstruktur di atas, implementasi modul Anda akan jauh lebih rapi, aman dari bug umum, serta siap diskalakan ke lingkungan produksi.
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