customdeletemodel.php

<?php

class CustomDeleteModel extends Eloquent
{
  // Return our custom query any time we run a query from this model
  protected function query()
  {
		return new CustomDeleteQuery($this);
	}
  
  // Override the delete method with an injection of the time we deletethe row
	public function delete()
	{
		if( $this->exists )
		{
			$this->fire_event('deleting');

			$time = time();
			$result = $this->query()->where(static::$key, '=', $this->get_key())->update(array('deleted_at' => $time));
			$this->attributes['deleted_at'] = $time;

			$this->fire_event('deleted');

			return $result;
		}
	}

  // Restore the deleted row
	public function restore()
	{
		$this->fire_event('restoring');

		$result = $this->query()->deleted()->where(static::$key, '=', $this->get_key())->update(array('deleted_at' => null));
		$this->attributes['deleted_at'] = null;

		$this->fire_event('restored');

		return $result;
	}

	protected function has_one_or_many($type, $model, $foreign)
	{
		return parent::has_one_or_many($type, $model, $foreign)->where_null('deleted_at');
	}

customdeletequery.php

<?php

use Laravel\Database\Eloquent\Query;

class CustomDeleteQuery extends Query
{
  public function __construct($model)
	{
    // Pass the constructor data
		parent::__construct($model);
    
    // For every query only return results that
    // have a null value in 'deleted_at'
		$this->where_null('deleted_at');
	}

  /**
   * Method to query only deleted items in our query
   * Usage: Model::where('foo', '=', 'bar')->deleted()->get();
   */
	public function deleted()
	{
    // Grab the existing where conditions
		$wheres = $this->table->wheres;
    
    // Apply a filter that will strip out the existing "where_null('deleted_at')"
		$wheres = array_filter( $wheres, function($where){ 
			if( ! ( $where['type'] == 'where_null' && $where['column'] == 'deleted_at' ) )
			{
				return $where;
			}
		});
    
    // Replace the existing where conditions with the filtered one
		$this->table->wheres = $wheres;
    
    // make sure we grab rows where 'deleted_at' is not null
		$this->where_not_null('deleted_at');

		return $this;
	}
}