# $Id: README 2 2007-10-27 22:08:58Z kim $ Data-Page-Balanced version 1.0.0 INSTALLATION To install this module, run the following commands: perl Makefile.PL make make test make install Alternatively, to install with Module::Build, you can use the following commands: perl Build.PL ./Build ./Build test ./Build install NAME Data::Page::Balanced - A data pager that will balance the number of entries per page. VERSION This document describes Data::Page::Balanced version 1.0.0 SYNOPSIS use Data::Page::Balanced; my $pager = Data::Page::Balanced->new({ total_entries => 67, entries_per_page => 25 }); print $pager->last_page() # 2 print $pager->entries_per_page() # 34 DESCRIPTION This module behaves like Data::Page except that it balances the number of entries per page so there is no last page with only a few entries. If, for example, you have 26 entries and want 25 entries per page, a normal pager would give you two pages with 25 entries on the first and 1 on the last. Data::Page::Balanced will instead give you one page with 26 entries. The benefit of a balanced number of entries per page is greater when the number of pages is small, with the ideal case being when there are two pages with only one entry on the last, in which case Data::Page::Balanced will fold it over to the first page. This saves the user from having to navigate to a page with only one entry, making it easier for him or her to see all the entries at once. The default flexibility is "floor(entries_per_page/2)", which means that in the example with 25 entries per page, the calculated entries per page can go up to 37 (25 + 12). The flexibility can be changed both at initialization and later on. SUBROUTINES/METHODS new my $pager = Data::Page::Balanced->new({ total_entries => 67, entries_per_page => 25, current_page => 1, flexibility => 12 }); This constructs a new pager object. The "total_entries" and "entries_per_page" arguments are mandatory, since they are used to calculate the actual number of entries per page. The "current_page" and "flexibility" arguments are optional. All arguments are given as name-value pairs in an anonymous hash. total_entries $pager->total_entries(100); # Sets the total entries to 100 $pager->total_entries(); # Returns the current total entries This will get or set the total entries. *Changing this will re-calculate the number of entries per page.* entries_per_page $pager->entries_per_page(23); # Sets the entries per page to 23 $pager->entries_per_page(); # Returns the current entries per page This will get or set the entries per page. *Since changing this will re-calculate the number of entries per page according to the flexibility, in most cases what you set is not what you later will get.* flexibility $pager->flexibility(12); # Sets the flexibility to 12 $pager->flexibility(); # Returns the current flexibility This will get or set the flexibility value. *Changing this will re-calculate the number of entries per page.* DIAGNOSTICS "total_entries and entries_per_page must be supplied." The "total_entries" and "entries_per_page" arguments has to be supplied when initializing a new object. "There must be at least one entry per page. %d is too small." The number of entries per page is not allowed to be smaller than 1. CONFIGURATION AND ENVIRONMENT Data::Page::Balanced requires no configuration files or environment variables. DEPENDENCIES Data::Page Class::Accessor::Chained::Fast INCOMPATIBILITIES None reported. BUGS AND LIMITATIONS No bugs have been reported. Please report any bugs or feature requests to "bug-data-page-balanced@rt.cpan.org", or through the web interface at . AUTHOR Kim Ahlström "" LICENSE AND COPYRIGHT Copyright (c) 2007, Kim Ahlström "". All rights reserved. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic. DISCLAIMER OF WARRANTY BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. 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