OpenProject is the leading open source project management software.
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openproject/app/helpers/pagination_helper.rb

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#-- encoding: UTF-8
#-- copyright
# OpenProject is a project management system.
#
# Copyright (C) 2012-2013 the OpenProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# See doc/COPYRIGHT.rdoc for more details.
#++
require 'will_paginate'
module PaginationHelper
def pagination_links_full(paginator, options = {})
html = ''.html_safe
if paginator.total_entries > 0
merged_options = { next_label: I18n.t(:label_next),
previous_label: I18n.t(:label_next),
container: false }.merge(options)
html << will_paginate(paginator, merged_options)
html << content_tag(:span, "(#{paginator.offset + 1} - #{paginator.offset + paginator.length}/#{paginator.total_entries})", :class => 'range')
if per_page_links && links = per_page_links(paginator.per_page)
html << links
end
end
content_tag :p, html, :class => "pagination"
end
def per_page_links(selected=nil)
links = Setting.per_page_options_array.collect do |n|
n == selected ?
content_tag(:span, n, :class => 'current') :
link_to_content_update(n, params.merge(:per_page => n))
end
content_tag :span, :class => 'per_page_options' do
links.size > 1 ? l(:label_display_per_page, links.join(', ')).html_safe : nil
end
end
# Returns the number of objects that should be displayed
# on the paginated list
def per_page_option
per_page = nil
if params[:per_page] && Setting.per_page_options_array.include?(params[:per_page].to_s.to_i)
per_page = params[:per_page].to_s.to_i
session[:per_page] = per_page
elsif session[:per_page]
per_page = session[:per_page]
else
per_page = Setting.per_page_options_array.first || 25
end
per_page
end
# Returns offset and limit used to retrieve objects
# for an API response based on offset, limit and page parameters
def api_offset_and_limit(options=params)
if options[:offset].present?
offset = options[:offset].to_i
if offset < 0
offset = 0
end
end
limit = options[:limit].to_i
if limit < 1
limit = 25
elsif limit > 100
limit = 100
end
if offset.nil? && options[:page].present?
offset = (options[:page].to_i - 1) * limit
offset = 0 if offset < 0
end
offset ||= 0
[offset, limit]
end
end