<?php

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

class CreateUserDataTable extends Migration {

	/**
	 * Run the migrations.
	 *
	 * @return void
	 */
	public function up()
	{
		Schema::create('user_data', function(Blueprint $table)
		{
			$table->increments('id');

			$table->integer('user_id')->unsigned()->index();
			$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');

			$table->string('type')->default('null');

			$table->string('key')->index();
			$table->text('value'); // or $table->string('value')->index();

			$table->timestamps();
		});
	}

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

}

<?php

use Enginebit\Meta\MetaTrait;

class User extends Eloquent {

    use MetaTrait;

	/**
	 *  The Eloquent models table name
	 */
	protected $table = 'users';

	/**
	 *  The table name for the meta data
	 */
	protected $metaTable = 'user_data';

	/**
	 *  Default key name is 'model_id'
	 */
	protected $metaKeyName = 'user_id';

	/**
	 *  To set a custom data model
	 */
	protected $metaModel = 'Acme\User\Data';

}

<?php

$user = User::find(1);

$user->setMeta('first_name','John');
$user->setMeta('last_name','Doe');

$user->save();

echo $user->getMeta('first_name');
// or
echo $user->first_name; // This wil first check the model and if null is returned it wil check the meta model

$user = User::find(1);

$user->setMeta('activated_at',Carbon::now());

$user->save();

// On another request

$activated_at = $user->getMeta('activated_at'); // Will return the carbon object
// or
$activated_at = $user->activated_at;

$post = Post::find(1);

$user->setMeta('post',$post); // Will be saved as a string like 'Acme\Posts\Post#1'

$user->save();

// On another request

$user = User::find(1);

$post = $user->getMeta('post'); // Will return the model
// or
$post = $user->post;

<?php

$user = User::find(1);

$user->deleteMeta('post');
// or
unset($user->post);

$user->save