- $newdata{'userid'} = Generate_Userid($borrowernumber, $newdata{'firstname'}, $newdata{'surname'});
+ if ( ( defined $newdata{'firstname'} ) && ( defined $newdata{'surname'} ) ) {
+ # Full page edit, firstname and surname input zones are present
+ $newdata{'userid'} = Generate_Userid( $borrowernumber, $newdata{'firstname'}, $newdata{'surname'} );
+ }
+ elsif ( ( defined $data{'firstname'} ) && ( defined $data{'surname'} ) ) {
+ # Partial page edit (access through "Details"/"Library details" tab), firstname and surname input zones are not used
+ # Still, if the userid field is erased, we can create a new userid with available firstname and surname
+ $newdata{'userid'} = Generate_Userid( $borrowernumber, $data{'firstname'}, $data{'surname'} );
+ }
+ else {
+ $newdata{'userid'} = $data{'userid'};
+ }