app/Models/Attachment.php
public function getFullPathAttribute()
    {
        $config = sprintf('filesystems.%s.root', $this->getDisk());

        $default = storage_path('app');

        $basePath = config($config, $default);

        return $basePath.DIRECTORY_SEPARATOR.$this->file_path;
    }
public function getFullPathAttribute()
    {
        $config = sprintf('filesystems.%s.root', $this->getDisk());

        $default = storage_path('app');

        $basePath = config($config, $default);

        return $basePath.DIRECTORY_SEPARATOR.$this->file_path;
    }
Returns the full path of the uploaded file.

@return string