I just finished a plugin called "records_sequence" which add
"next/
previous" methods to each ActiveRecord object. After installed, it
could be a pleasure to find a object''s neighbors.
== INSTALL =# This plugin requires Rails 2.1+ currently. Install it by below
command:
ruby script/plugin install git://github.com/Aaron2Ti/records_sequence.git
== USAGE =# After installed, your models could:
foo = User.first
bar = foo.next
bar2 = foo.previous
foo_neighbour = foo.previous # returns nil if foo has no previous
neighbour
#The sequence''s sorted column is defined by the new
option :sorted_by,
# default is the ''id'' column.
foo = User.last
pre_foo_sorted_by_id = foo.previous
pre_foo_sorted_by_age = foo.previous(:sorted_by => ''age'')
#Also works fine with most other ActiveRecord''s find options:
foo = User.find 30
foo.next(:conditions => [''age < ?'', 20])
foo.previous(:offset => 2)
foo.next(:sorted_by => ''address'', :order =>
''name DESC, age'')
foo.previous( :sorted_by => ''age'', :conditions =>
[''age < ?'', 20],
:order => ''name DESC, address'',
:offset => 2 )
Future info of this plugin also could be found at my blog:
http://aaron2ti.blogspot.com/2008/06/plugin-released-recordssequence.html
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