NAME
Data::Pageset::Exponential - Page numbering for very large page numbers
VERSION
version v0.4.0
SYNOPSIS
my $pager = Data::Pageset::Exponential->new(
total_entries => $total_entries,
entries_per_page => $per_page,
);
$pager->current_page( 1 );
my $pages = $pager->pages_in_set;
# Returns
# [ 1, 2, 3, 10, 20, 30, 100, 200, 300, 1000, 2000, 3000 ]DESCRIPTION
This is a pager designed for paging through resultsets that contain hundreds if not thousands of pages.
The interface is similar to Data::Pageset with sliding pagesets.
ATTRIBUTES
total_entries
This is the total number of entries.
It is a read/write attribute.
entries_per_page
This is the total number of entries per page. It defaults to 10.
It is a read/write attribute.
first_page
This returns the first page. It defaults to 1.
current_page
This is the current page number. It defaults to the "first_page".
It is a read/write attribute.
exponent_base
This is the base exponent for page sets. It defaults to 10.
exponent_max
This is the maximum exponent for page sets. It defaults to 3, for pages in the thousands.
It should not be greater than
ceil( log( $total_pages ) / log(10) )however, larger numbers will increase the size of "pages_in_set".
pages_per_exponent
This is the number of pages per exponent. It defaults to 3.
pages_per_set
This is the maximum number of pages in "pages_in_set". It defaults to
1 + 2 * ( $pages_per_exponent * ( $exponent_max + 1 ) - 1 )which for the default values is 23.
This should be an odd number.
This was renamed from "max_pages_per_set" in v0.3.0.
max_pages_per_set
This is a deprecated alias for "pages_per_set".
METHODS
entries_on_this_page
Returns the number of entries on the page.
last_page
Returns the number of the last page.
first
Returns the index of the first entry on the "current_page".
last
Returns the index of the last entry on the "current_page".
previous_page
Returns the number of the previous page.
next_page
Returns the number of the next page.
pages_in_set
Returns an array reference of pages in the page set.
previous_set
This returns the first page number of the previous page set, for the first exponent.
It is added for compatability with Data::Pageset.
next_set
This returns the first page number of the next page set, for the first exponent.
It is added for compatability with Data::Pageset.
KNOWN ISSUES
Differences with Data::Page
This module is intended as a drop-in replacement for Data::Page. However, it is based on a complete rewrite of Data::Page using Moo, rather than extending it. Because of that, it needs to fake @ISA. This may break some applications.
Otherwise, it has the following differences:
The attributes have type constraints. Invalid data may throw a fatal error instead of being ignored.
Setting the "current_page" to a value outside the "first_page" or "last_page" will return the first or last page, instead of that value.
Differences with Data::Pageset
This module can behave like Data::Pageset in slide mode if the exponent is set to 1:
my $pager = Data::Pageset::Exponential->new(
exponent_max => 1,
pages_per_exponent => 10,
pages_per_set => 10,
);SUPPORT FOR OLDER PERL VERSIONS
Since v0.8.0, the this module requires Perl v5.20 or later.
Future releases may only support Perl versions released in the last ten years.
SEE ALSO
SOURCE
The development version is on github at https://github.com/robrwo/Data-Pageset-Exponential and may be cloned from git://github.com/robrwo/Data-Pageset-Exponential.git
BUGS
Please report any bugs or feature requests on the bugtracker website https://github.com/robrwo/Data-Pageset-Exponential/issues
When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.
AUTHOR
Robert Rothenberg <rrwo@cpan.org>
Test code was adapted from Data::Page to ensure compatability.
COPYRIGHT AND LICENSE
This software is Copyright (c) 2018-2024 by Robert Rothenberg.
This is free software, licensed under:
The Artistic License 2.0 (GPL Compatible)