Übersetzungsbüro Richardson Rechtschreib-QS von Commits in den Standard ...

[mfinanz.git] / SL / Form.pm

diff --git a/SL/Form.pm b/SL/Form.pm
index 45662f3b0cbcbba3b1cf343e951ae6c04e2298d2..2d4bbd8c95f69f7d530f8ad533a75712f092e880 100644 (file)
--- a/SL/Form.pm
+++ b/SL/Form.pm
@@ -2603,6 +2603,24 @@ sub all_vc {
   $main::lxdebug->leave_sub();
 }
 
+sub mtime_ischanged {
+  my ($self, $table, $option) = @_;
+
+  return                                       unless $self->{id};
+  croak ("wrong call, no valid table defined") unless $table =~ /(oe|ar|ap|delivery_orders|parts)/;
+
+  my $query       = "SELECT mtime, itime FROM " . $table . " WHERE id = ?";
+  my $ref         = selectfirst_hashref_query($self, $self->get_standard_dbh, $query, $self->{id});
+  $ref->{mtime} ||= $ref->{itime};
+
+  if ($self->{lastmtime} && $self->{lastmtime} ne $ref->{mtime} ) {
+      my $etxt = ($option eq 'mail') ? "The document has been changed by another user. Please reopen it in another window and copy the changes to the new window" :
+                                       "The document has been changed by another user. No mail was sent. Please reopen it in another window and copy the changes to the new window";
+      $self->error($main::locale->text($etxt));
+    ::end_of_request();
+  }
+}
+
 sub language_payment {
   $main::lxdebug->enter_sub();
 
@@ -2754,6 +2772,7 @@ sub create_links {
       qq|SELECT
            a.cp_id, a.invnumber, a.transdate, a.${table}_id, a.datepaid,
            a.duedate, a.ordnumber, a.taxincluded, (SELECT cu.name FROM currencies cu WHERE cu.id=a.currency_id) AS currency, a.notes,
+           a.mtime, a.itime,
            a.intnotes, a.department_id, a.amount AS oldinvtotal,
            a.paid AS oldtotalpaid, a.employee_id, a.gldate, a.type,
            a.globalproject_id, ${extra_columns}
@@ -2770,7 +2789,8 @@ sub create_links {
     foreach my $key (keys %$ref) {
       $self->{$key} = $ref->{$key};
     }
-
+    $self->{mtime}   ||= $self->{itime};
+    $self->{lastmtime} = $self->{mtime};
     my $transdate = "current_date";
     if ($self->{transdate}) {
       $transdate = $dbh->quote($self->{transdate});
@@ -3736,6 +3756,17 @@ Used to override the default favicon.
 
 A html page title will be generated from this
 
+=item mtime_ischanged
+
+Tries to avoid concurrent write operations to records by checking the database mtime with a fetched one.
+
+Can be used / called with any table, that has itime and mtime attributes.
+Valid C<table> names are: oe, ar, ap, delivery_orders, parts.
+Can be called wit C<option> mail to generate a different error message.
+
+Returns undef if no save operation has been done yet ($self->{id} not present).
+Returns undef if no concurrent write process is detected otherwise a error message.
+
 =back
 
 =cut