-# pick the first itemnumber unless one was selected by the user
-my $starting_itemnumber = $query->param('shelfbrowse_itemnumber'); # || $items[0]->{itemnumber};
-$template->param( OpenOPACShelfBrowser => 1) if $starting_itemnumber;
-# find the right cn_sort value for this item
-my ($starting_cn_sort, $starting_homebranch, $starting_location);
-my $sth_get_cn_sort = $dbh->prepare("SELECT cn_sort,homebranch,location from items where itemnumber=?");
-$sth_get_cn_sort->execute($starting_itemnumber);
-my $branches = GetBranches();
-while (my $result = $sth_get_cn_sort->fetchrow_hashref()) {
- $starting_cn_sort = $result->{'cn_sort'};
- $starting_homebranch->{code} = $result->{'homebranch'};
- $starting_homebranch->{description} = $branches->{$result->{'homebranch'}}{branchname};
- $starting_location->{code} = $result->{'location'};
- $starting_location->{description} = GetAuthorisedValueDesc('','', $result->{'location'} ,'','','LOC');
+ # pick the first itemnumber unless one was selected by the user
+ my $starting_itemnumber = $query->param('shelfbrowse_itemnumber'); # || $items[0]->{itemnumber};
+ $template->param( OpenOPACShelfBrowser => 1) if $starting_itemnumber;
+ # find the right cn_sort value for this item
+ my ($starting_cn_sort, $starting_homebranch, $starting_location);
+ my $sth_get_cn_sort = $dbh->prepare("SELECT cn_sort,homebranch,location from items where itemnumber=?");
+ $sth_get_cn_sort->execute($starting_itemnumber);
+ while (my $result = $sth_get_cn_sort->fetchrow_hashref()) {
+ $starting_cn_sort = $result->{'cn_sort'};
+ $starting_homebranch->{code} = $result->{'homebranch'};
+ $starting_homebranch->{description} = $branches->{$result->{'homebranch'}}{branchname};
+ $starting_location->{code} = $result->{'location'};
+ $starting_location->{description} = GetAuthorisedValueDesc('','', $result->{'location'} ,'','','LOC', 'opac');
+
+ }
+
+ ## List of Previous Items
+ # order by cn_sort, which should include everything we need for ordering purposes (though not
+ # for limits, those need to be handled separately
+ my $sth_shelfbrowse_previous;
+ if (defined $starting_location->{code}) {
+ $sth_shelfbrowse_previous = $dbh->prepare("
+ SELECT *
+ FROM items
+ WHERE
+ ((cn_sort = ? AND itemnumber < ?) OR cn_sort < ?) AND
+ homebranch = ? AND location = ?
+ ORDER BY cn_sort DESC, itemnumber LIMIT 3
+ ");
+ $sth_shelfbrowse_previous->execute($starting_cn_sort, $starting_itemnumber, $starting_cn_sort, $starting_homebranch->{code}, $starting_location->{code});
+ } else {
+ $sth_shelfbrowse_previous = $dbh->prepare("
+ SELECT *
+ FROM items
+ WHERE
+ ((cn_sort = ? AND itemnumber < ?) OR cn_sort < ?) AND
+ homebranch = ?
+ ORDER BY cn_sort DESC, itemnumber LIMIT 3
+ ");
+ $sth_shelfbrowse_previous->execute($starting_cn_sort, $starting_itemnumber, $starting_cn_sort, $starting_homebranch->{code});
+ }
+ my @previous_items;
+ while (my $this_item = $sth_shelfbrowse_previous->fetchrow_hashref()) {
+ my $sth_get_biblio = $dbh->prepare("SELECT biblio.*,biblioitems.isbn AS isbn FROM biblio LEFT JOIN biblioitems ON biblio.biblionumber=biblioitems.biblionumber WHERE biblio.biblionumber=?");
+ $sth_get_biblio->execute($this_item->{biblionumber});
+ while (my $this_biblio = $sth_get_biblio->fetchrow_hashref()) {
+ $this_item->{'title'} = $this_biblio->{'title'};
+ my $this_record = GetMarcBiblio($this_biblio->{'biblionumber'});
+ $this_item->{'browser_normalized_upc'} = GetNormalizedUPC($this_record,$marcflavour);
+ $this_item->{'browser_normalized_oclc'} = GetNormalizedOCLCNumber($this_record,$marcflavour);
+ $this_item->{'browser_normalized_isbn'} = GetNormalizedISBN(undef,$this_record,$marcflavour);
+ }
+ unshift @previous_items, $this_item;
+ }
+
+ ## List of Next Items; this also intentionally catches the current item
+ my $sth_shelfbrowse_next;
+ if (defined $starting_location->{code}) {
+ $sth_shelfbrowse_next = $dbh->prepare("
+ SELECT *
+ FROM items
+ WHERE
+ ((cn_sort = ? AND itemnumber >= ?) OR cn_sort > ?) AND
+ homebranch = ? AND location = ?
+ ORDER BY cn_sort, itemnumber LIMIT 3
+ ");
+ $sth_shelfbrowse_next->execute($starting_cn_sort, $starting_itemnumber, $starting_cn_sort, $starting_homebranch->{code}, $starting_location->{code});
+ } else {
+ $sth_shelfbrowse_next = $dbh->prepare("
+ SELECT *
+ FROM items
+ WHERE
+ ((cn_sort = ? AND itemnumber >= ?) OR cn_sort > ?) AND
+ homebranch = ?
+ ORDER BY cn_sort, itemnumber LIMIT 3
+ ");
+ $sth_shelfbrowse_next->execute($starting_cn_sort, $starting_itemnumber, $starting_cn_sort, $starting_homebranch->{code});
+ }
+ my @next_items;
+ while (my $this_item = $sth_shelfbrowse_next->fetchrow_hashref()) {
+ my $sth_get_biblio = $dbh->prepare("SELECT biblio.*,biblioitems.isbn AS isbn FROM biblio LEFT JOIN biblioitems ON biblio.biblionumber=biblioitems.biblionumber WHERE biblio.biblionumber=?");
+ $sth_get_biblio->execute($this_item->{biblionumber});
+ while (my $this_biblio = $sth_get_biblio->fetchrow_hashref()) {
+ $this_item->{'title'} = $this_biblio->{'title'};
+ my $this_record = GetMarcBiblio($this_biblio->{'biblionumber'});
+ $this_item->{'browser_normalized_upc'} = GetNormalizedUPC($this_record,$marcflavour);
+ $this_item->{'browser_normalized_oclc'} = GetNormalizedOCLCNumber($this_record,$marcflavour);
+ $this_item->{'browser_normalized_isbn'} = GetNormalizedISBN(undef,$this_record,$marcflavour);
+ }
+ push @next_items, $this_item;
+ }
+
+ # alas, these won't auto-vivify, see http://www.perlmonks.org/?node_id=508481
+ my $shelfbrowser_next_itemnumber = $next_items[-1]->{itemnumber} if @next_items;
+ my $shelfbrowser_next_biblionumber = $next_items[-1]->{biblionumber} if @next_items;
+
+ $template->param(
+ starting_homebranch => $starting_homebranch->{description},
+ starting_location => $starting_location->{description},
+ starting_itemnumber => $starting_itemnumber,
+ shelfbrowser_prev_itemnumber => (@previous_items ? $previous_items[0]->{itemnumber} : 0),
+ shelfbrowser_next_itemnumber => $shelfbrowser_next_itemnumber,
+ shelfbrowser_prev_biblionumber => (@previous_items ? $previous_items[0]->{biblionumber} : 0),
+ shelfbrowser_next_biblionumber => $shelfbrowser_next_biblionumber,
+ PREVIOUS_SHELF_BROWSE => \@previous_items,
+ NEXT_SHELF_BROWSE => \@next_items,
+ );
+}