+=head1 CLASS METHODS
+
+=over 4
+
+=item acl_agentnum_sql [ INCLUDE_GLOBAL_BOOL ]
+
+Returns an SQL fragment for searching for part_referral records allowed by the
+current users's agent ACLs (and "Edit global advertising sources" right).
+
+Pass a true value to include global advertising sources (for example, when
+simply using rather than editing advertising sources).
+
+=cut
+
+sub acl_agentnum_sql {
+ my $self = shift;
+
+ my $curuser = $FS::CurrentUser::CurrentUser;
+ my $sql = $curuser->agentnums_sql;
+ $sql = " ( $sql OR agentnum IS NULL ) "
+ if $curuser->access_right('Edit global advertising sources')
+ or defined($_[0]) && $_[0];
+
+ $sql;
+
+}
+
+=item all_part_referral [ INCLUDE_GLOBAL_BOOL ]
+
+Returns all part_referral records allowed by the current users's agent ACLs
+(and "Edit global advertising sources" right).
+
+Pass a true value to include global advertising sources (for example, when
+simply using rather than editing advertising sources).
+
+=cut
+
+sub all_part_referral {
+ my $self = shift;
+ my $global = @_ ? shift : '';
+ my $disabled = @_ ? shift : '';
+
+ my $hashref = $disabled ? {} : { 'disabled' => '' };
+ my $and = $disabled ? ' WHERE ' : ' AND ';
+
+ qsearch({
+ 'table' => 'part_referral',
+ 'hashref' => $hashref,
+ 'extra_sql' => $and. $self->acl_agentnum_sql($global). ' ORDER BY refnum ',
+ });
+
+}