I have the same problem with Mantis on my project.

I think I have find out why is happening. There are two problems:

• The first one is that (unless with SQL Server) when we create an issue, all the Custom fields appear filled with a white space (' '). So when you save the issue are not empty.
• The second one is that in the bug_report.php file, when the foreach bucle of custom fields is made, there is no check for the field value so the error is never shown. I have added the next lines in this file:
  if ($t_def['require_report'] && (gpc_get_custom_field( "customfield$t_id", $t_def['type'], NULL )==''||gpc_get_custom_field( "customfield$t_id", $t_def['type'], NULL )==NULL)){
  error_parameters( lang_get_defaulted( custom_field_get_field( $t_id, 'name' ) ) );
  trigger_error( ERROR_EMPTY_FIELD, ERROR );
  }

In the 96 line, after this IF:

if ( $t_def['require_report'] && !gpc_isset_custom_field( $t_id, $t_def['type'] ) ) {
error_parameters( lang_get_defaulted( custom_field_get_field( $t_id, 'name' ) ) );
trigger_error( ERROR_EMPTY_FIELD, ERROR );
}
And it seems its working.

I don't know if this is php correct code (is the first time in my life I work with this language), but works :D.

Thanks for suggestion.
I have one question for your solution:
Is this
"if ($t_def['require_report'] && (gpc_get_custom_field( "customfield$t_id", $t_def['type'], NULL )==''||gpc_get_custom_field( "customfield$t_id", $t_def['type'], NULL )==NULL)){
error_parameters( lang_get_defaulted( custom_field_get_field( $t_id, 'name' ) ) );
trigger_error( ERROR_EMPTY_FIELD, ERROR );
}
I add to end off line or between some lines in code ?
Regards,

You have to add it in:

• In the bug_report.php after the 96 line, just down the first If I wrote in my message.
• In the bug_update.php after the 130 line, just down the same If.

Thank's Dagan. It's working but only if I register new bug (problem). What I must do that this solution work during Resolve problem and Close. I have require fields too in this status.
Thanks for replay,
Adam

I am seeing the same issue here with 1.1.8. It doesn't seem possible to use "required field" with Enumerations.
I picked Type "List" with "Min. Length" as 1 where my possilbe values are "Manufacturing|Test Execution|Other". This seemed to work fine.

I have two custom fields in my project, one to be entered by reporter (reports/updates issues), and the other entered by the developer (resolves/closes issues)

I have set required for Report & update for 1st, and Required for Resolved & Closed for the other.

However, when the user is reporting the issue, its validating the required for resolved fields as well. I am using Mantis: 1.1.8

As reported earlier, I have to force validation by setting min. field length to 1

still the same in 1.2.0rc2

I have the same problem in 1.2.0-RC1. We are running on linux, apache in combi with MySQL 5.
Can this one be fixed in the final 1.2.0?