1Data::Pageset(3)      User Contributed Perl Documentation     Data::Pageset(3)
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4

NAME

6       Data::Pageset - Page numbering and page sets
7

SYNOPSIS

9         use Data::Pageset;
10         my $page_info = Data::Pageset->new({
11           'total_entries'       => $total_entries,
12           'entries_per_page'    => $entries_per_page,
13           # Optional, will use defaults otherwise.
14           'current_page'        => $current_page,
15           'pages_per_set'       => $pages_per_set,
16           'mode'                => 'fixed', # default, or 'slide'
17         });
18
19         # General page information
20         print "         First page: ", $page_info->first_page, "\n";
21         print "          Last page: ", $page_info->last_page, "\n";
22         print "          Next page: ", $page_info->next_page, "\n";
23         print "      Previous page: ", $page_info->previous_page, "\n";
24
25         # Results on current page
26         print "First entry on page: ", $page_info->first, "\n";
27         print " Last entry on page: ", $page_info->last, "\n";
28
29         # Can add in the pages per set after the object is created
30         $page_info->pages_per_set($pages_per_set);
31
32         # Page set information
33         print "First page of previous page set: ",  $page_info->previous_set, "\n";
34         print "    First page of next page set: ",  $page_info->next_set, "\n";
35
36         # Print the page numbers of the current set
37         foreach my $page (@{$page_info->pages_in_set()}) {
38           if($page == $page_info->current_page()) {
39             print "<b>$page</b> ";
40           } else {
41             print "$page ";
42           }
43         }
44

DESCRIPTION

46       The object produced by Data::Pageset can be used to create page
47       navigation, it inherits from Data::Page and has access to all methods
48       from this object.
49
50       In addition it also provides methods for dealing with set of pages, so
51       that if there are too many pages you can easily break them into chunks
52       for the user to browse through.
53
54       You can even choose to view page numbers in your set in a 'sliding'
55       fassion.
56
57       The object can easily be passed to a templating system such as Template
58       Toolkit or be used within a script.
59

METHODS

61   new()
62         use Data::Pageset;
63         my $page_info = Data::Pageset->new({
64           'total_entries'       => $total_entries,
65           'entries_per_page'    => $entries_per_page,
66           # Optional, will use defaults otherwise.
67           'current_page'        => $current_page,
68           'pages_per_set'       => $pages_per_set,
69           'mode'                => 'slide', # default fixed
70         });
71
72       This is the constructor of the object, it requires an anonymous hash
73       containing the 'total_entries', how many data units you have, and the
74       number of 'entries_per_page' to display. Optionally the 'current_page'
75       (defaults to page 1) and pages_per_set (how many pages to display,
76       defaults to 10) can be added.
77
78       The mode (which defaults to 'fixed') determins how the paging will
79       work, for example with 10 pages_per_set and the current_page set to 18
80       you will get the following results:
81
82       Fixed:
83
84       Pages in set:
85           11,12,13,14,15,16,17,18,19,20
86
87       Previous page set:
88           1
89
90       Next page set:
91           21
92
93       Slide:
94
95       Pages in set:
96           14,15,16,17,18,19,20,21,22,23
97
98       Previous page set:
99           9
100
101       Next page set:
102           24
103
104       You can not change modes once the object is created.
105
106   current_page()
107         $page_info->current_page($page_num);
108
109       This method sets the current_page to the argument supplied, it can also
110       be set in the constructor, but you may want to reuse the object if
111       printing out multiple pages. It will then return the page number once
112       set.
113
114       If this method is called without any arguments it returns the current
115       page number.
116
117   pages_per_set()
118         $page_info->pages_per_set($number_of_pages_per_set);
119
120       Calling this method initalises the calculations required to use the
121       paging methods below. The value can also be passed into the constructor
122       method new().
123
124       If called without any arguments it will return the current number of
125       pages per set.
126
127   previous_set()
128         print "Back to previous set which starts at ", $page_info->previous_set(), "\n";
129
130       This method returns the page number at the start of the previous page
131       set.  undef is return if pages_per_set has not been set.
132
133   next_set()
134         print "Next set starts at ", $page_info->next_set(), "\n";
135
136       This method returns the page number at the start of the next page set.
137       undef is return if pages_per_set has not been set.
138
139   pages_in_set()
140         foreach my $page_num (@{$page_info->pages_in_set()}) {
141           print "Page: $page_num \n";
142         }
143
144       This method returns an array ref of the the page numbers within the
145       current set. undef is return if pages_per_set has not been set.
146

EXPORT

148       None by default.
149

AUTHOR

151       Leo Lapworth "<LLAP@cuckoo.org>"
152

REPOSITORY

154       http://github.com/ranguard/data-pageset
155

CONTRIBUTORS

157       Ryan D Johnson "<ryan@innerfence.com>" PLOBBES
158

SEE ALSO

160       Data::Page.
161
163       Copyright (C) 2007, Leo Lapworth
164
165       This module is free software; you can redistribute it or modify it
166       under the same terms as Perl itself.
167

POD ERRORS

169       Hey! The above document had some coding errors, which are explained
170       below:
171
172       Around line 112:
173           =back doesn't take any parameters, but you said =back 4
174
175       Around line 130:
176           =back doesn't take any parameters, but you said =back 4
177
178
179
180perl v5.30.1                      2020-01-29                  Data::Pageset(3)
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