Method is Allowed hook

Use this hook to control whether new records can be inserted, existing records can be updated or deleted. The input argument for this hook is the method.

This tables shows the Method values:

Method	Description
DAL_NEW	The hook is called to know whether records can be added. There is no current record, but in case of a session with a view, the view fields are available.
DAL_UPDATE	The hook is called to know whether the current record can be updated.
DAL_DESTROY	The hook is called to know whether the current record can be deleted.

Example:

function extern boolean method.is.allowed(long method)
{
        on case method
        case DAL_NEW:
              select  tdsls400.cdf_blck
              from    tdsls400
              where   tdsls400.orno = :tdsls401.orno
              as set with 1 rows
              selectdo
                   if tdsls400.cdf_blck = tdcdf______chk.yes then
                          dal.set.error.message(
                            "@Order is blocked, you cannot add Lines to it.")
                          return(false)
                   endif
              endselect
              break
        case DAL_UPDATE:
              break
        case DAL_DESTROY:
              break
        endcase
        return(true)
}

See the Infor ES Programmers Guide (Infor Customer Portal KB2924522) for more information about method.is.allowed()of the standard Data Access Layer. Note that this hook can only be used to set more restrictions. If the standard functionality does not allow a certain action, the extension cannot allow it either.