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[kivitendo-erp.git] / SL / DB / Helper / Paginated.pm

diff --git a/SL/DB/Helper/Paginated.pm b/SL/DB/Helper/Paginated.pm
index c490e2a..e75de4c 100644 (file)
--- a/SL/DB/Helper/Paginated.pm
+++ b/SL/DB/Helper/Paginated.pm
@@ -4,25 +4,25 @@ use strict;
 
 require Exporter;
 our @ISA    = qw(Exporter);
-our @EXPORT = qw(paginate);
+our @EXPORT = qw(paginate disable_paginating);
 
 use List::MoreUtils qw(any);
 
 sub paginate {
-  my ($self, %params) = @_;
-  my $page = $params{page} || 1;
-  my %args = %{ $params{args} || {} };
+  my ($self, %params)     = @_;
+  my $page                = $params{page} || 1;
+  my %args                = %{ $params{args} || {} };
 
-  my $ret = { };
+  my $ret                 = { };
 
-  $ret->{per_page} = per_page($self, %params);
-  $ret->{max}    = ceil($self->get_all_count(%args), $ret->{per_page}) || 1;
-  $ret->{cur}    = $page < 1 ? 1
-                 : $page > $ret->{max} ? $ret->{max}
-                 : $page;
-  $ret->{common} = make_common_pages($ret->{cur}, $ret->{max});
+  $ret->{per_page}        = per_page($self, %params);
+  $ret->{max}             = ceil($self->get_all_count(%args), $ret->{per_page}) || 1;
+  $ret->{page}            = $page < 1 ? 1
+                          : $page > $ret->{max} ? $ret->{max}
+                          : $page;
+  $ret->{common}          = make_common_pages($ret->{page}, $ret->{max});
 
-  $params{args}{page}     = $ret->{cur};
+  $params{args}{page}     = $ret->{page};
   $params{args}{per_page} = $ret->{per_page};
   delete $params{args}{limit};
   delete $params{args}{offset};
@@ -64,6 +64,13 @@ sub calc_visibility {
              any { abs ($cur - $this) == $_ } 10, 50, 100, 500, 1000, 5000;
 }
 
+sub disable_paginating {
+  my ($self, %params) = @_;
+
+  delete $params{args}{page};
+  delete $params{args}{per_page};
+}
+
 1;
 
 __END__
@@ -72,13 +79,13 @@ __END__
 
 =head1 NAME
 
-SL::Helper::Paginated - Manager mixin for paginating results.
+SL::DB::Helper::Paginated - Manager mixin for paginating results.
 
 =head1 SYNOPSIS
 
 In the manager:
 
-  use SL::Helper::Paginated;
+  use SL::DB::Helper::Paginated;
 
   __PACKAGE__->default_objects_per_page(10); # optional, defaults to 20
 
@@ -107,7 +114,7 @@ In the template:
 
 Paginate will prepare information to be used for paginating, change the given
 args to use them, and return a data structure containing information for later
-display.
+display. See L<STRUCTURE OF PAGES> for information how the return is formatted.
 
 C<args> needs to contain a reference to a hash, which will be used as an
 argument for C<get_all>. After C<paginate> the keys C<page> and C<per_page>
@@ -117,11 +124,57 @@ since they don't make sense with paginating.
 C<page> should contain a value between 1 and the maximum pages. Will be
 sanitized.
 
-The parameter C<per_page> is optional. If not given the default value of the
+The parameter C<per_page> is optional, otherwise the default value of the
 Manager will be used.
 
 =back
 
+=head1 STRUCTURE OF PAGES
+
+The returned hashref will have the following structure:
+
+  { per_page => 20,   # how many entries per page
+    max      => 5,    # number of the last page
+    page     => 2,    # number of the current page
+    common   => [     # an array of hashes for each page
+      ...,
+      { active  => 1, # set if this is the active page
+        page    => 2, # the string to display for this page
+        visible => 1, # should this be displayed in the paginating controls
+      },
+      ...
+    ]
+  }
+
+You may assume that C<page> is sanitized to be within 1..C<max>.
+
+The common list is kept arbitrary by design, so that the algorithm to display
+the paginating controls can be changed by solely changing the
+C<make_common_pages> algorithm. If you need different glyphs for the pages or
+different boundaries, translate the C<page> entry for the page.
+
+The initial algorithm will show the following pages:
+
+=over 4
+
+=item *
+
+1, 2, 3
+
+=item *
+
+Last page
+
+=item *
+
+Current page +/- 5 pages
+
+=item *
+
+Current page +/- 10, 50, 100, 500, 1000, 5000
+
+=back
+
 =head1 TEMPLATE HELPERS
 
 =over 4