PHP somo la 96: Jinsi ya kutengeneza ORM inayofanya CDRUDE operation

Katika somo hili utakwenda Jinsi ya kutengeneza ORM inayofanya CDRUDE operation.

Ufafanuzi wa Code na Structure zake

Katika somo hili, tutajifunza jinsi ya kuandika programu ya CRUD (Create, Read, Update, Delete) kwa kutumia Object-Relational Mapping (ORM) katika PHP. ORM ni njia ya kuwasiliana na database kwa kutumia madarasa na vitu badala ya maandiko ya moja kwa moja ya SQL.

Tunaingiza mafaili mawili muhimu katika programu hii:

Model - Hii ni darasa la ORM linaloshughulikia mawasiliano na database. Inasaidia kutekeleza operesheni za CRUD kama create, all, find, update, na delete kwenye jedwali la database.
index.php - Hii ni script kuu inayoshughulikia maombi kutoka kwa mtumiaji. Inasoma data kutoka kwa fomu na kuihifadhi kwenye database au kuonyesha taarifa kutoka kwa database.

Code Structure

Model Class (model.php):
- Database Connection: Darasa linahusisha uunganisho na database kwa kutumia Database::getInstance()->getConnection().
- CRUD Methods: Kuna njia tano za kufanya operesheni za CRUD:
  - create($data): Inatumika kuingiza data mpya kwenye database.
  - all(): Inarejesha orodha ya taarifa zote kutoka kwenye jedwali.
  - find($id): Inapata taarifa moja kwa kutumia id kama kipengele cha kipekee.
  - update($id, $data): Inasasisha data ya mteja kwa kutumia id.
  - delete($id): Inafuta data ya mteja kwa kutumia id.
Index File (index.php):
- Form Handling: Inasimamia fomu za kuongeza, kusasisha, na kufuta wateja.
- Displaying Data: Inawaonyesha wateja wote waliopo katika database na inatoa chaguo za kuhariri au kufuta.
- Error Handling: Inajali hali ya kosa, kama vile kutokamilika kwa fomu au kushindwa kwa operesheni.

Code Kamili

1. Model Class (`model.php`)

<?php 
class Model {
    protected $db;
    protected $table;

    public function __construct($table) {
        $this->db = Database::getInstance()->getConnection();
        $this->table = $table; // Dynamically set the table name
    }

    public function create($data) {
        // Automatically generate insert query from data
        $columns = implode(", ", array_keys($data));
        $placeholders = implode(", ", array_fill(0, count($data), "?"));
        $stmt = $this->db->prepare("INSERT INTO {$this->table} ($columns) VALUES ($placeholders)");

        // Bind parameters dynamically
        $stmt->bind_param(str_repeat("s", count($data)), ...array_values($data));
        return $stmt->execute();
    }

    public function all() {
        $stmt = $this->db->prepare("SELECT * FROM {$this->table}");
        $stmt->execute();
        return $stmt->get_result()->fetch_all(MYSQLI_ASSOC);
    }

    public function find($id) {
        $stmt = $this->db->prepare("SELECT * FROM {$this->table} WHERE id = ?");
        $stmt->bind_param("i", $id);
        $stmt->execute();
        return $stmt->get_result()->fetch_assoc();
    }

    public function update($id, $data) {
        $setClause = "";
        $types = "s"; // Start with "i" for id (integer)

        // Build the set clause and types string
        foreach ($data as $key => $value) {
            $setClause .= "$key = ?, ";
            $types .= "s"; // Assuming all values in $data are strings
        }
        $setClause = rtrim($setClause, ", ");

        // Prepare the SQL statement
        $stmt = $this->db->prepare("UPDATE {$this->table} SET $setClause WHERE id = ?");

        // Merge the values of $data with the id
        $params = array_merge(array_values($data), [$id]);

        // Bind parameters dynamically with the correct number of type specifiers
        $stmt->bind_param($types, ...$params); // $types now includes "i" for id and "s" for each field in $data

        return $stmt->execute();
    }

    public function delete($id) {
        $stmt = $this->db->prepare("DELETE FROM {$this->table} WHERE id = ?");
        $stmt->bind_param("i", $id);
        return $stmt->execute();
    }
}
?>

2. Index File (`index.php`)

<?php
require_once 'dbclass.php';
require_once "model.php";

// Initialize ORM
$customerORM = new Model('customers');
$error = "";

// Handle form submission for adding a new customer
if ($_SERVER["REQUEST_METHOD"] === "POST" && isset($_POST['action']) && $_POST['action'] === 'create') {
    $name = trim($_POST['name']);
    $email = trim($_POST['email']);

    if (!empty($name) && !empty($email)) {
        $data = [
            'name' => $name,
            'email' => $email
        ];

        if ($customerORM->create($data)) {
            header("Location: index.php");
            exit();
        } else {
            $error = "Failed to add customer.";
        }
    } else {
        $error = "Please fill in all fields.";
    }
}

// Handle form submission for updating a customer
if ($_SERVER["REQUEST_METHOD"] === "POST" && isset($_POST['action']) && $_POST['action'] === 'update') {
    $id = $_POST['id'];
    $name = trim($_POST['name']);
    $email = trim($_POST['email']);

    if (!empty($name) && !empty($email)) {
        $data = [
            'name' => $name,
            'email' => $email
        ];

        if ($customerORM->update($id, $data)) {
            header("Location: index.php");
            exit();
        } else {
            $error = "Failed to update customer.";
        }
    } else {
        $error = "Please fill in all fields.";
    }
}

// Handle delete operation
if (isset($_GET['delete'])) {
    $id = $_GET['delete'];

    if ($customerORM->delete($id)) {
        header("Location: index.php");
        exit();
    } else {
        $error = "Failed to delete customer.";
    }
}

// Fetch all customers
$customers = $customerORM->all();
?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Customer List</title>
</head>
<body>

<h2>Customer List</h2>
<?php if (!empty($customers)): ?>
    <table border="1">
        <tr>
            <th>ID</th>
            <th>Name</th>
            <th>Email</th>
            <th>Actions</th>
        </tr>
        <?php foreach ($customers as $customer): ?>
            <tr>
                <td><?= ht">

...

Jiunge nasi WhatsApp kupata update zetu

Jiunge nasi WhatsApp

Zoezi la Maswali

Nyuma Endelea

Umeionaje Makala hii.. ?

Nzuri Mbaya Save

Author: Rajabu

Tarehe: 2025-03-16 Topic: PHP Main: ICT File: Download PDF Views 589

Share On:

Facebook WhatsApp

Sponsored links
👉1 kitabu cha Simulizi 👉2 Madrasa kiganjani 👉3 Tafasiri ya Riyadh Swalihina 👉4 Kitau cha Fiqh 👉5 Simulizi za Hadithi Audio 👉6 Sira ya Mtume Muhammad (s.a.w)

Post zinazofanana:

PHP - somo la 44: Nini cURL na ni yapi matumizi yake?

Katika somo hilibutajifunza maana ya cURL pamoja na matumini yake

Soma Zaidi...

PHP somo la 57: class traits kwenye PHP

Katika somo hili utakwenda kujifunza concept ya traits kwenye OOP. hii itakusaidia ku solve baadhi ya changamoto zinazotokana na inheritance

Soma Zaidi...

PHP - somo la 7: Jinsi ya kaundika function yakwako

Katika somo hili utakwenda kujifunza jinsi ya kuandika function yako mwenyewe yaani user defined function

Soma Zaidi...

PHP - somo la 45: Jinsi ya kutuma sms kwa kutumia PHP

Katika soko hili takwenda kujufunza jinsi ya kutuma sms kwa kutumia PHP. Hii itasaidia kama unataka kutuma OTP yaqni Onetime password

Soma Zaidi...

PHP somo la 50: Jinsi ya kutengeneza CLASS na OBJECT kwenye PHP OOP

Katika somo hili utakwenda kujifunza jinsi ya kutengeneza class na object. Tunakwenda kutumia mfano wetu wa hapo juu kwa ajili ya kukamilisha somo hili.

Soma Zaidi...

PHP - somo la 15: Jinsi ya kutengeneza table kwenye database kwa kutumia PHP

Katika somo hili utakwenda kujifunza jinsi ya kutumia PHP kutengeneza tabale kwenye database ya mysql .

Soma Zaidi...

PHP somola 63: Jinsi ya ku connect database kwa kutumia PDO na faida zake

Katika soo hili utakwenda kujifunza umuhmu wa kutumia PDO kwenye PHP kwa ajili ya kutumia database.

Soma Zaidi...

PHP somo la 91: Mambo ya kuzingatia unapokuwa unashughulika na data za json

Haya ni mabo ya kuzingatia unapo encode ama ku decode data za json

Soma Zaidi...

PHP - somo la 16: Jinsi ya kufuta tabale na database kwa kutumia php

Katika somo hili utajifunza jinsi ya kufuta table ya databse kwa kutumia PHP. Pia utajifunza jinsi ya kututa database yeto

Soma Zaidi...

PHP somo la 51: Jinsi ya kutumia consctuct na destruct function

Katika somo hili utakwenda kujifunza kazi na matumizi ya construct function na desctruct function kwenye OOP

Soma Zaidi...

PHP somo la 96: Jinsi ya kutengeneza ORM inayofanya CDRUDE operation

Ufafanuzi wa Code na Structure zake

Code Structure

Code Kamili

1. Model Class (model.php)

2. Index File (index.php)

Post zinazofanana:

1. Model Class (`model.php`)

2. Index File (`index.php`)