Data::Pager.3pm

Langue: en

Version: 2006-04-04 (debian - 07/07/09)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

Data::Pager - flexible data pager

SYNOPSIS

   use Data::Pager;
   
   my $pager = Data::Pager->new({
     current => 100,
     perpage => 10,
     offset  => 5,
     limit   => 2000,
   });
 
   #~ accessors:  
   $pager->current; # 100
   $pager->next;    # 101
   $pager->prev;    # 99
   $pager->limit;   # 2000
   $pager->start;   # 1 # not typical start of a programmer
   $pager->final;   # \
                       # 400 (which denotes 2000 / 5 pager links)
   $pager->end;     # /
   $pager->from;    # 495 (may serve in SQL LIMIT clause)
   $pager->to;      # 500 (may serve in SQL LIMIT clause)
   $pager->list;    # 95  96  97  98  99  100  101  102  103  104  105

DESCRIPTION

This class implements the familiar pager where the current position is centered.

CONSTRUCTOR


new

  my $pager = Data::Pager->new({
    current => 1,      # this is the current pager position
    perpage => 10,     # the pager consists of this number of links (defaults to 10)
    offset  => 5,      # this is the number of results (fetched from the DB for example) per result
    limit   => 100,    # how far is the pager allowed 
  });
 
  # sample output from html table:
  
  id ... ..... ... 
  1. ... ..... ...
  2. ... ..... ...
  3. ... ..... ...
  4. ... ..... ...
  5. ... ..... ...
  
  1 2 3 4 5 6 7 8 9 10

Returns object or undef if current position is beyond the limit.

METHODS


current

  $pager->current();

Returns the current pager position.

set_current($digit)

  $pager->set_current(850);
  $pager->set_current(850)->next();

Sets the current pager position. Returns the pager object on succes, undef on false.

next

Returns the next pager position or undef if this is the last one.

prev

Returns the previous pager position or undef if this is the first one.

start

Returns 1 - the start pager position.

end

Returns the end pager position.

first

Returns the first pager position for this result set.

last

Returns the last pager position for this result set.

from

   '1' => {
     'to' => 5,
     'next' => 2,
     'prev' => undef,
     'from' => 0
   },
   '2' => {
     'to' => 10,
     'next' => 3,
     'prev' => 1,
     'from' => 5
   },
   ...

Returns the start result this pager position refers to.

to

Returns the end result this pager position refers to.

list

  @_ = $pager->list;
  $_ = $pager->list;

Returns the pager links for this result set. In list context returns the resulting list. In scalar context returns reference to the resulting list.

  # note the alignment
 
  $pager->set_current(10);
  print $pager->list;         # 6 7 8 9  [10]  11 12 13 14 15
  $pager->set_current(33);    
  print $pager->list;         # 28 29 30 31 32 [33] 34 35 36 37 38

SEE ALSO

Data::Page

BUGS

What BUGS?

AUTHOR

Vidul Nikolaev Petrov, vidul@cpan.org This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

The full text of the license can be found in the LICENSE file included with this module.