Change input value in eloquent model event (saved/saving)

hey,

consider i have a simple controller and model to handle news. (create/update/delete) where the news have a title and image.

i am trying to upload the image and remove them in the model event (i had the upload stuff in my controller but i think i keep it more simple in the news event model) everything went fine, until i faced a problem where i have to update the image url field in the db after either removing image (setting it back to null) or adding one (setting the filename)

i tried to run a simple model update() but it is going through an infinite loop, and i also tried the saving event instead of saved, and tried to update the input value inside the event methods, yet i faced the same issue.

any advice ?

/*****************
     * MODEL EVENTS  *
     *****************/

     public static function boot()
    {
        parent::boot();

        //delete image and thumbnails when deleting a news
        News::deleted(function($news)
        {   
            $news->removeImage();
        });

        //upload image on save (edit/create) and check the remove checkbox to delete image(on edit)
        News::saved(function($news){
            $input = Input::all();
            // if user checked the remove old image
            if(isset($input['remove_image']))
            {
                $news->removeImage();
                // update image field value in db to null ...
            }
            //upload new image
            if(isset($input['image']))
            {
                $uploaded_image = Input::file('image');
                $filename = $news->uploadImage($uploaded_image);
                // update image field value in db to filename ...
            }
        });
    }