Tk::DBI::DBGrid - grid äëÿ ïðîñìîòðà è ðåäàêòèðîâàíèÿ áàçû.
use DBI; use Tk; use Tk::DBI::DBGrid; my $dbh = DBI->connect( $dbhstr, $name, $pas, {AutoCommit => 0, RaiseError => 0}) or die DBI::errstr; my $w = $MW->Toplevel(-title => 'dbgrid'); ..... my $sql = "SELECT field0, field1, field2 FROM table0"; # òîëüêî ïðîñìîò my $grid = $w->DBGrid( -dbh => $dbh, -sql => $sql )->pack; # ñ èñïîëüçîâàíèåì ðåäàêòèðîâàíèÿ, áåç âñòàêè è óäàëåíèÿ my @pkey = ('field0'); my $upd = sub { my @row = @_; ..... # êàêîé-íèáóäü êîä äî update, åñëè íóæíî $dbh->do("UPDATE table0 SET WHERE field0 = $row[0]"); $dbh->commit; ..... # êàêîé-íèáóäü êîä ïîñëå update, åñëè íóæíî 0; }; my $grid = $w->DBGrid( -dbh => $dbh, -sql => $sql, -maxrow => 10, -edit => 1, -pkey => \@pkey, -updfunc => $upd, -font => 'Courier 10' )->pack; # with insert, delete and formating sells my @pkey = ('field0'); my @cell; $cell[0]{width} = 5; $cell[0]{edit} = 0; $cell[0]{name} = 'title0' # çàãîëîâîê äëÿ ïåðâîé êîëîíêè $cell[1]{width} = undef; # ñ÷èòûâàåòñÿ äëèíà ïîëÿ èç òàáëèöû $cell[1]{edit} = 1; $cell[2]{width} = 7; $cell[2]{edit} = 1; $cell[2]{justify} = 'left'; my $ins = sub { my @row = @_; ...... $dbh->do("INSERT INTO table0 (field0, field1, field2) VALUES ($row[0], $row[1], $row[2])"); $dbh->commit; ...... 1; }; my $upd = sub { my @row = @_; ..... $dbh->do("UPDATE table0 SET WHERE field0 = $row[0]"); $dbh->commit; ..... 0; }; my $del = sub { my ($pkey) = @_; ..... $dbh->do("DELETE FROM table0 WHERE field0 = $pkey"); $dbh->commit; ..... 0; }; my %fkey; * $fkey{ins} = 'Key-F5'; $fkey{del} = 'Key-F8'; $fkey{copy} = 'Control-Key-c'; $fkey{copy2} = 'Control-Key-C'; $fkey{copy3} = 'Control-Insert'; my $encd = sub { return decode('cp1251', $_[0]); # from module Encode }; my $grid = $w->DBGrid( -dbh => $dbh, -sql => $sql, -maxrow => 10, -edit => 1, -pkey => \@pkey, -insfunc => $ins, -updfunc => $upd, -delfunc => $del, -titlbg => '#f0f0f0', -seltitlbg => 'gray', -font => 'Courier 10', -cellformat => \@cell, -fkeys => \%fkey, -encodes => $encd )->pack(-fill => 'x');
DBGrid ïîçâîëÿåò ïðîñìàòðèâàòü/ðåäàêòèðîâàòü ëþáóþ òàáëèöó, ê êîòîðîé ìîæíî îáðàòèòüñÿ èñïîëüçóÿ çàïðîñ. Çàïðîñ ìîæåò îáúåäèíÿòü íåñêîëüêî òàáëèö.
Äëÿ ðåäàêòèðîâàíèÿ íàäî ÷òî áû êàæäóþ çàïèñü ìîæíî áûëî îäíîçíà÷íî îïðåäåëèòü êàêèì-ëèáî ïîëåì, êîòîðîå áóäåò âûïîëíÿòü ôóíêöèþ primary key. Äëÿ ïåðåäà÷è èçìåíåíèÿ â áàçó èñïîëüçóþòñÿ ôóíêöèè, óêàçàòåëè íà êîòîðûå ïåðåäàþòñÿ â êîíñòðóêòîðå ( -insfunc, -updfunc & -delfunc ). Ñàìè ôóíêöèè îïèñûâàþòñÿ â îñíîâíîì òåêñòå ïðîãðàììû. Åñëè óêàçàòåëü íå ïåðåäàåòñÿ èëè ïåðåäàåòñÿ undef, òî ñîîòâåòñòâóþùåå äåéñòâèå íå îáðàáàòûâàåòñÿ. Åñëè â çàïðîñå áóäóò íàéäåíû êëþ÷åâûå ñëîâà ãðóïïîâûõ îïåðàöèé èëè UNION, òî DBGrid áóäåò â ðåæèìå ïðîñìîòðà ( àíàëîãè÷íî -edit => 0 ). Ïîñëå âûçîâîâ ôóíêöèé îòîáðàæàåìûå äàííûå îáíîâëÿþòñÿ åñëè âîçâðàùàåòñÿ 1.
Ïàðàìåòðû îòîáðàæåíèÿ êàæäîãî ïîëÿ îïðåäåëÿþòñÿ ïàðàìåòðàìè ñàìîé òàáëèöû (ñ÷èòûâàþòñÿ äëèíà ïîëÿ è òèï - òåêñòîâûé, öèñëîâîé è îñòàëüíûå). Äëÿ ïîëÿ, îïðåäåëåííîãî ÷åðåç -pkey, ðåäàêòèðîâàíèå íå äîñòóïíî. Âñå ÿ÷åéêè DBGrid - ýëåìåíòû óïðàâëåíèÿ Label èëè Entry, è ïîñëå îòîáðàæåíèÿ èìè ìîæíî óïðàâëÿòü îòäåëüíî, íàïðèìåð $grig->{rowframee}->[$i][$j]->configure( -font => 'Courier 12').
äåñêðèïòîð ñîåäèíåíèÿ ñ áàçîé äàííûé. Îáÿçàòåëüíûé ïàðàìåòð.
Çàïðîñ, ðåçóëüòàò êîòîðîãî îòîáðàæàåò DBGrig. Ðåçóëüòàòû çàïðîñà çàíîñÿòñÿ â ìàññèâ $grid->{table}->{data}->[íîìåð_çàïèñè][íîìåð_ïîëÿ]. Íóìåðàöèÿ èäåò ñ íóëÿ. Îáÿçàòåëüíûé ïàðàìåòð.
Ìàêñèìàëüíîå êîëè÷åñòâî çàïèñåé, îòîáðàæàåìîå íà ýêðàíå. Default 10.
Óêàçûâàåò â êàêîì ðåæèìå îòîáðàæàåòñÿ DBGrig : òîëüêî ïðîñìîòð ( 0 ) èëè ðåäàêòèðîâàíèÿ ( 1 ). Default 0.
Äëÿ ðåæèìà ðåäàêòèðîâàíèÿ äîëæíî áûòü óêàçàíî êëþ÷åâîå ïîëå (primary key) è ñ÷èòûâàåòñÿ îíî èç ïåðâîãî ýëåìåíòà ìàññèâà, íà êîòîðûé ïåðåäàåòñÿ óêàçàòåëü. Åñëè -pkey íå îïðåäåëíåíî èëè íå íàéäåíî â çàïðîñå, òî edit = 0.
Óêàçàòåëü íà ôóíêöèþ, êîòîðàÿ âûçûâàåòñÿ äëÿ âñòàâêè íîâîé ñòðîêè. *  ôóíêöèþ ïåðåäàåòñÿ ìàññèâ, ñîäåðæàùèé çàïèñü äëÿ âñòàâêè â òàáëèöó. Ïîðÿäîê ïîëåé â çàïèñè òàêîé æå, êàê â çàïðîñå, ïîëó÷åííîì ÷åðåç -sql. Åñëè ôóíêöèÿ íå îïðåäåëåíà, íîâàÿ çàïèñü äîáàâëÿòñÿ íå áóäåò. Åñëè ôóíêöèÿ âîçâðàùàåò 1 (èñòèíà), òî ïîñëå åå âûçîâà îáíîâëÿþòñÿ äàííûå èç áàçû. Default undef.
Ðàáîòàåò àíàëîãè÷íî -insfunc, íî ñ îäíèì îòëè÷èåì: ïðè çíà÷åíèè undef * âñå ðàâíî ïîçâîëÿåò èçìåíÿòü çíà÷åíèÿ â ÿ÷åéêàõ, íî ýòè èçìåíåíèÿ â áàçó íå ïåðåäàþòñÿ. Åñëè â ôóíêöèè äàííûå íå ìîäèôèöèðóþòñÿ, òî äàííûå â êýøå ìîäóëÿ ëó÷øå íå îáíîâëÿòü (âîçâðàùàòü 0). Default undef.
Ðàáîòàåò àíàëîãè÷íî -insfunc.
Öâåò ôîíà çàãîëîâêîâ ïîëåé. Default for windows SystemButtonFace, for * other OS is #f0f0f0.
Öâåò ôîíà çàãîëîâêà àêòèâíîãî ïîëÿ. Ïî óìî÷àíèþ äëÿ windows SystemHighlight, äëÿ * îñòàëüíûõ gray.
Øðèôò, èñïîëüçóåìûé â ÿ÷åéêàõ. Ò.ê. øèðèíà ýëåìåíòîâ Entry è Label çàäàåòñÿ â ñèìâîëàõ, òî äëÿ øðèôò äîëæåí áûòü monospaced, íàïðèìåð Courier. Default 'Courier 9'
óêàçàòåëü íà ìàññèâ, ïåðâûé ýëåìåíò êîòîðîãî óêàçûâàåò íà íîìåð ïîëÿ (íóìåðàöèÿ ñ íóëÿ), âòîðîé - ïàðàìåòð ôîðìàòèðîâàíèÿ ïîëÿ. width - øèðèíà ïîëÿ â ñèìâîëàõ, edit - äîñòóïíî ëè ðåäàêòèðîâàíèå äàííîãî ïîëÿ ïðè ðàçðåøåíèè ðåäàêòèðîâàíèè âñåé òàáëèöû, justify - öåíòðèðîâàíèå íàäïèñè (left, center, right).
Óêàçàòåëü íà õýø, â êîòîðîì áóäóò õðàíèòüñÿ íîâûå êîìáàíèöèè êëàâèø äëÿ âñòàâêè è óäàëåíèÿ çàïèñåé: â ïîëå ins - âñòàâêà íîâîé çàïèñè, del - óäàëåíèå òåêóùåé, copy, copy2, copy3 - êîïèðîâàòü çàïèñü â áóôåð îáìåíà. Åñëè çíå÷åíèå -fkeys íå îïðåäåëåíî, òî äëÿ âñòàâêè íà÷çà÷àåòñÿ F5, äëÿ óäàëåíèÿ F8, äëÿ êîïèðîâàíèÿ â áóôåð - Ctrl+C and Ctrl+Ins.
Óêàçàòåëü íà ôóíêöèþ, êîòîðàÿ âûçûâàåòñÿ äëÿ ïåðåêîäèðîâàíèÿ èç êîäîâîé ñòðàíèöû áàçû äàííûõ â êîäîâóþ ñòðàíèöó ãðàôè÷åñêîé îáîëî÷êè, íàïðèìåð, â áàçå èñïîëüçóåòñÿ NLS_LANG=CL8MSWIN1251, à Gnome 2.x - UTF8. Åñëè ôóíêöèÿ íå îïðåäåëåíà, ïåðåêîäèðîâêà íå ïðîèçâîäèòñÿ. Default undef.
Ëèõîòà Âàäèì vadim-lvv@yandex.ru
dbgrid, entry, label, database, table
1 POD Error
The following errors were encountered while parsing the POD:
Non-ASCII character seen before =encoding in 'äëÿ'. Assuming CP1252
To install Tk::DBI::DBGrid, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Tk::DBI::DBGrid
CPAN shell
perl -MCPAN -e shell install Tk::DBI::DBGrid
For more information on module installation, please visit the detailed CPAN module installation guide.