pagify

by Lin Jen-Shin (godfat)

• github
• rubygems
• rdoc

Pagination tools for Array(or custom class), DataMapper and ActiveRecord. Helpers for Innate/Ramaze and Rails included.

• Ruby 1.8+ or 1.9.1+
• For Basic/ArrayPager: only Ruby is needed
• For DataMapperPager: dm-core and dm-aggregates 1.2+
• for ActiveRecordPager: activerecord 2.3.14+ or activerecord 3.1+
• for Innate helper: innate 2011.10+

gem install pagify

• Aims to be as flexible as possible
• Separate intrusive "pagify" method and Array/DataMapper/ActiveRecord Pager.
• Separate view helpers. There's only html helper right now.
• Web framework specific helper included. Currently for Innate/Ramaze and Rails.

For fast Rails will_paginate replacement:

require 'pagify/active_record'
require 'pagify/helper/rails'

in controller:

@photos = Photo.pagify(:page => params[:page])

in view:

pagify_links(@photos)

For Innate/Ramaze:

require 'pagify'
require 'pagify/helper/innate'

in controller, say you want pagify helper:

class Controller < Ramaze::Controller
  helper :pagify
end

for the data part, see DataMapperPager or ActiveRecordPager in view, same as in Rails.

Basic DataMapper usage:

require 'pagify/data_mapper'

class User
  include DataMapper::Resource
  property :id, Serial
  property :name, String
  has n, :pets
end

class Pet
  include DataMapper::Resource
  property :id, Serial
  property :name, String
  belongs_to :user
end

User.pagify :page => 1, :per_page => 10 # => create a page contains users
User.all(:name => 'godfat').pagify      # => create a page contains users named godfat

User.get(1).pets.pagify                 # => create a page contains pets owned by user 1

Basic html helper usage:

require 'pagify/helper/html'

Create a string with page links.

Pet.pagify.pager.html.links(params[:page]){ |page|
  # the block result would be used as url for each page
  "/pets/list?page=#{page}"
}

Pagify::Helper::HTML.setting[:prev_text] = '<]' # globally change html setting

If you would like to use instance level setting, you shouldn't use method pagify, new your own DataMapperPager or so to remember instance level html setting. for example, see below:

class Pet
# same as above
  def self.page num
    @pager ||= begin
      pager = Pagify::DataMapperPager.new(:per_page => 20)
      # below would be pager instance level setting
      # you can setup global setting mentioned above in your init script perhaps
      pager.html.setting[:separator] = ' . '
      pager.html.setting[:ellipsis]  = '...'
      pager
    end
    @pager.page(num)
  end
end

Then you would use Pet.page(3) or user.pets.page(2) to retrieve data. This would create next/prev links only.

Pet.page(1).html.links_navigate{ |page|
  "/pets/list?page=#{page}"
}

This would create next/prev links and other page links

pet_pager.page(1).html.links_full{ |page|
  "/pets/show?page=#{page}"
}

and you can build your pager from scratch via BasicPager. e.g. BasicPager.new :fetcher => lambda{|*a|[]}, :counter => lambda{0} this would be similar to Pagify::NullPager.

You can disable null page via passing :null_page => false to any pager, or set pager.null_page = false anytime.

See example or test for more examples (and use case for ActiveRecordPager).

• Lin Jen-Shin (@godfat)
• @agios

Apache License 2.0

Copyright (c) 2008-2011, Lin Jen-Shin (godfat)

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.