Laravel Eloquent ORM in Bangla Part-enerating Model Classes)

Eloquent: Generating Model Classes is a process for generating model classes for interacting with database tables in Laravel. Using Eloquent ORM (Object-Relational Mapper) you can easily read, create, update and delete data from database tables.

---

How to create Model Class

1. Creating Model using Artisan command

The model class is created using Laravel's artisan CLI. Run the following command:

php artisan make:model ModelName

For example, to create a model named Post:

php artisan make:model Post

This will create a Post.php file in the app/Models directory.

---

The basic structure of the model

The

model should generally look like this:

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Post extends Model
{
    use HasFactory;
}

---

2. Creating model with migration file

Use the following command to create the model and database migration together:

php artisan make:model Post -m

This will create two things:

1. Post model.
2. A migration file named database/migrations/2025_01_05_000000_create_posts_table.php.

---

3. Creating Factory and Seeder with Model

To build models with Factory and Seeder files:

php artisan make:model ModelName

• m: will generate migration.
• f: will create the factory.
• s: will generate cedar.
• c: will create the controller.

---

relation to database table in model

1. Default table name

Laravel assumes the database table name according to the model class name.
For example:

• The default table for the Post model will be posts.
• The default table for the User model will be users.

If you want to use custom tables, set the $table property on the model:

php artisan make:model Post

---

Important properties and methods of model

1. $fillable and $guarded

$fillable or $guarded is used to determine which fields in the database can insert data.

• $fillable: Data can be inserted into specified fields.

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Post extends Model
{
    use HasFactory;
}

• $guarded: Data cannot be inserted into specified fields.

php artisan make:model Post -m

2. $primaryKey

If the primary key of your table is something other than id:

php artisan make:model Post -mfsc

3. $timestamps

Laravel uses table created_at and updated_at columns by default. If you don't want to use them:

class Post extends Model
{
    protected $table = 'blog_posts';
}

4. Relationships (Relationships)

Models can be linked to each other using Eloquent relationships.

• One-to-One Relationship:

php artisan make:model ModelName

• One-to-Many relationship:

php artisan make:model Post

• Many-to-Many relationship:

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Post extends Model
{
    use HasFactory;
}

The above is the detailed content of Laravel Eloquent ORM in Bangla Part-enerating Model Classes). For more information, please follow other related articles on the PHP Chinese website!