human
Write me a the Python code you requested given the following:
Complete the below
def heliport():

    ''''RESTful CRUD controller'
    '''
assistant
#Here is the Python code you requested.
    def prep(r):
        s3db.gis_location_filter(r)
        if r.interactive:
            if r.component:
                if (r.component.name == 'human_resource'):
                    s3db.org_site_staff_config(r)
                elif (r.component.name == 'inv_item'):
                    s3db.configure('inv_inv_item', create=False, deletable=False, editable=False, listadd=False)
            elif (r.method == 'update'):
                field = r.table.obsolete
                field.readable = field.writable = True
        return True
    s3.prep = prep
    return s3_rest_controller(rheader=s3db.transport_rheader)