public function post_remove()
 {
     $testimonial = Testimonial::Find($this->testimonial_id);
     // delete Organisation_Testimonial
     DB::table('organisation_testimonial')->where('testimonial_id', '=', $this->testimonial_id)->delete();
     // delete testimonial
     $testimonial->delete();
     return Redirect::to('user/testimonials')->with('success', 'The testimonial has been removed.');
 }