Laravel Eloquent ORM

এই লেসনে লারাভেল Eloquent ORM নিয়ে বিস্তারিত আলোচনা করবো। কিভাবে লারাভেল এর Eloquent ORM ব্যবহার করে ডাটাবেস এ ডাটা select, insert, update, delete করতে হয় তা দেখবো। 

 

Source Code:

Routes:

use App\Post;

Route::get('orm', function() {
	$data = [
		'title' => 'Welcome to dhaka',
		'description' => 'Lorem ipsum dolor sit amet, consectetur adipisicing elit. Harum dignissimos assumenda maiores, amet laboriosam reprehenderit dicta autem ex fugiat impedit quaerat aspernatur illo ipsa enim a delectus itaque beatae iste!',
		'user_id' => 1,
		'status' => 1
	];

	Post::create($data);
	
});


Route::get('posts/{id}', function( $id ) {
	$posts = Post::findOrFail($id);	

	dd($posts);
});

Route::get('posts', function() {
	$posts = Post::where('status', 1)->firstOrFail();	

	dd($posts);
});

Route::get('add-post', function() {
		
	$post = new Post();
	$post->title = 'This is title';
	$post->description = 'This is description';
	$post->user_id = 1;
	$post->status = 1;
	
	$post->save();

});

Route::get('update-post', function() {
	$post = Post::find(20);
	$post->title = 'This is new title';
	$post->status = 0;
	$post->save();
});

Route::get('first-or-create', function() {
	// $post = Post::firstOrCreate(['title' => 'Hello post']);
	$post = Post::firstOrNew(['title' => 'My new post']);
	$post->status = 1;
	$post->save();
});


Route::get('delete-post', function() {
	// $post = Post::findOrFail(4);
	// $post->delete();

	// Post::destroy([6, 7, 8]);

	Post::where('status', 0)->delete();
});

 

CreatePostsTable:

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreatePostsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('posts', function (Blueprint $table) {
            $table->id();
            $table->string('title');
            $table->foreignId('user_id');
            $table->text('description');
            $table->boolean('status');
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('posts');
    }
}