337 lines
11 KiB
Ruby
337 lines
11 KiB
Ruby
# encoding: utf-8
|
|
#
|
|
# Redmine - project management software
|
|
# Copyright (C) 2006-2013 Jean-Philippe Lang
|
|
#
|
|
# This program is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public License
|
|
# as published by the Free Software Foundation; either version 2
|
|
# of the License, or (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
|
module Redmine
|
|
module Pagination
|
|
class Paginator
|
|
attr_reader :item_count, :per_page, :page, :page_param
|
|
def initialize(*args)
|
|
if args.first.is_a?(ActionController::Base)
|
|
args.shift
|
|
ActiveSupport::Deprecation.warn "Paginator no longer takes a controller instance as the first argument. Remove it from #new arguments."
|
|
end
|
|
item_count, per_page, page, page_param = *args
|
|
|
|
@item_count = item_count
|
|
@per_page = per_page
|
|
page = (page || 1).to_i
|
|
if page < 1
|
|
page = 1
|
|
end
|
|
@page = page
|
|
@page_param = page_param || :page
|
|
end
|
|
|
|
def offset
|
|
(page - 1) * per_page
|
|
end
|
|
|
|
## fq
|
|
def reverse_offset
|
|
offset = @item_count-@per_page*page
|
|
if offset < 0
|
|
offset = 0
|
|
end
|
|
offset
|
|
end
|
|
## end
|
|
|
|
|
|
def first_page
|
|
if item_count > 0
|
|
1
|
|
end
|
|
end
|
|
|
|
def previous_page
|
|
if page > 1
|
|
page - 1
|
|
end
|
|
end
|
|
|
|
def next_page
|
|
if last_item < item_count
|
|
page + 1
|
|
end
|
|
end
|
|
|
|
def last_page
|
|
if item_count > 0
|
|
(item_count - 1) / per_page + 1
|
|
end
|
|
end
|
|
|
|
def first_item
|
|
item_count == 0 ? 0 : (offset + 1)
|
|
end
|
|
|
|
def last_item
|
|
l = first_item + per_page - 1
|
|
l > item_count ? item_count : l
|
|
end
|
|
|
|
def linked_pages
|
|
pages = []
|
|
if item_count > 0
|
|
pages += [first_page, page, last_page]
|
|
pages += ((page-2)..(page+2)).to_a.select {|p| p > first_page && p < last_page}
|
|
end
|
|
pages = pages.compact.uniq.sort
|
|
if pages.size > 1
|
|
pages
|
|
else
|
|
[]
|
|
end
|
|
end
|
|
|
|
def items_per_page
|
|
ActiveSupport::Deprecation.warn "Paginator#items_per_page will be removed. Use #per_page instead."
|
|
per_page
|
|
end
|
|
|
|
def current
|
|
ActiveSupport::Deprecation.warn "Paginator#current will be removed. Use .offset instead of .current.offset."
|
|
self
|
|
end
|
|
end
|
|
|
|
# Paginates the given scope or model. Returns a Paginator instance and
|
|
# the collection of objects for the current page.
|
|
#
|
|
# Options:
|
|
# :parameter name of the page parameter
|
|
#
|
|
# Examples:
|
|
# @user_pages, @users = paginate User.where(:status => 1)
|
|
#
|
|
def paginate(scope, options={})
|
|
options = options.dup
|
|
finder_options = options.extract!(
|
|
:conditions,
|
|
:order,
|
|
:joins,
|
|
:include,
|
|
:select
|
|
)
|
|
if scope.is_a?(Symbol) || finder_options.values.compact.any?
|
|
return deprecated_paginate(scope, finder_options, options)
|
|
end
|
|
|
|
paginator = paginator(scope.count, options)
|
|
collection = scope.limit(paginator.per_page).offset(paginator.offset).to_a
|
|
|
|
return paginator, collection
|
|
end
|
|
|
|
def deprecated_paginate(arg, finder_options, options={})
|
|
ActiveSupport::Deprecation.warn "#paginate with a Symbol and/or find options is depreceted and will be removed. Use a scope instead."
|
|
klass = arg.is_a?(Symbol) ? arg.to_s.classify.constantize : arg
|
|
scope = klass.scoped(finder_options)
|
|
paginate(scope, options)
|
|
end
|
|
|
|
def paginator(item_count, options={})
|
|
options.assert_valid_keys :parameter, :per_page
|
|
|
|
page_param = options[:parameter] || :page
|
|
page = (params[page_param] || 1).to_i
|
|
per_page = options[:per_page] || per_page_option
|
|
Paginator.new(item_count, per_page, page, page_param)
|
|
end
|
|
|
|
module Helper
|
|
include Redmine::I18n
|
|
# Renders the pagination links for the given paginator.
|
|
#
|
|
# Options:
|
|
# :per_page_links if set to false, the "Per page" links are not rendered
|
|
#
|
|
def pagination_links_full(*args)
|
|
pagination_links_each(*args) do |text, parameters, options|
|
|
if block_given?
|
|
yield text, parameters, options
|
|
else
|
|
link_to text, params.merge(parameters), options
|
|
end
|
|
end
|
|
end
|
|
|
|
# Yields the given block with the text and parameters
|
|
# for each pagination link and returns a string that represents the links
|
|
# def pagination_links_each(paginator, count=nil, options={}, &block)
|
|
# options.assert_valid_keys :per_page_links
|
|
#
|
|
# per_page_links = options.delete(:per_page_links)
|
|
# per_page_links = false if count.nil?
|
|
# page_param = paginator.page_param
|
|
#
|
|
# html = ''
|
|
# if paginator.previous_page
|
|
# # \xc2\xab(utf-8) = «
|
|
# text = "\xc2\xab " + l(:label_previous)
|
|
# html << yield(text, {page_param => paginator.previous_page}, :class => 'previous') + ' '
|
|
# end
|
|
#
|
|
# previous = nil
|
|
# paginator.linked_pages.each do |page|
|
|
# if previous && previous != page - 1
|
|
# html << content_tag('span', '...', :class => 'spacer') + ' '
|
|
# end
|
|
# if page == paginator.page
|
|
# html << content_tag('span', page.to_s, :class => 'current page')
|
|
# else
|
|
# html << yield(page.to_s, {page_param => page}, :class => 'page')
|
|
# end
|
|
# html << ' '
|
|
# previous = page
|
|
# end
|
|
#
|
|
# if paginator.next_page
|
|
# # \xc2\xbb(utf-8) = »
|
|
# text = l(:label_next) + " \xc2\xbb"
|
|
# html << yield(text, {page_param => paginator.next_page}, :class => 'next') + ' '
|
|
# end
|
|
#
|
|
# html << content_tag('span', "(#{paginator.first_item}-#{paginator.last_item}/#{paginator.item_count})", :class => 'items') + ' '
|
|
#
|
|
# if per_page_links != false && links = per_page_links(paginator, &block)
|
|
# html << content_tag('span', links.to_s, :class => 'per-page')
|
|
# end
|
|
#
|
|
# html.html_safe
|
|
# end
|
|
#Added by Nie guanghui
|
|
#Designed for pagination.
|
|
def pagination_links_each(paginator, count=nil, options={}, &block)
|
|
#options.assert_valid_keys :per_page_links
|
|
|
|
#per_page_links = options.delete(:per_page_links)
|
|
per_page_links = options[:per_page_links]
|
|
remote = options[:remote] ? options[:remote] : false
|
|
flag = options[:flag] ? options[:flag] : false
|
|
per_page_links = false if count.nil?
|
|
page_param = paginator.page_param
|
|
|
|
html = ''
|
|
if paginator.previous_page
|
|
# \xc2\xab(utf-8) = «
|
|
if flag
|
|
text = l(:label_previous)
|
|
else
|
|
text = "\xc2\xab " + l(:label_previous)
|
|
end
|
|
html << '<li>' << yield(text, {page_param => paginator.previous_page}, :class => 'previous c_blue', :remote => remote) << '</li>' + ' '
|
|
end
|
|
unless paginator.previous_page
|
|
if paginator.next_page
|
|
if flag
|
|
text = l(:label_previous)
|
|
else
|
|
text = "\xc2\xab " + l(:label_previous)
|
|
end
|
|
html << '<li>' << yield(text, {page_param => paginator.previous_page}, :class => 'previous c_blue', :remote => remote) << '</li>' + ' '
|
|
end
|
|
end
|
|
|
|
previous = nil
|
|
paginator.linked_pages.each do |page|
|
|
if previous && previous != page - 1
|
|
if flag
|
|
html << '<li>' << content_tag('a', '...', :class => 'c_blue') << '</li>' + ' '
|
|
else
|
|
html << '<li>' << content_tag('span', '...', :class => 'spacer ') << '</li>' + ' '
|
|
end
|
|
end
|
|
if page == paginator.page
|
|
if flag
|
|
html << '<li class = "wlist_select">' << content_tag('a', page.to_s, :class => 'current-page c_white') << '</li>'
|
|
else
|
|
html << '<li>' << content_tag('span', page.to_s, :class => 'current-page') << '</li>'
|
|
end
|
|
else
|
|
html << '<li>' << yield(page.to_s, {page_param => page}, :class => 'page c_blue', :remote => remote) << '</li>'
|
|
end
|
|
html << ' '
|
|
previous = page
|
|
end
|
|
|
|
if paginator.next_page
|
|
if flag
|
|
text = l(:label_next)
|
|
else
|
|
text = l(:label_next) + " \xc2\xbb"
|
|
end
|
|
html << '<li>' << yield(text, {page_param => paginator.next_page}, :class => 'next c_blue', :remote => remote) << '</li>' + ' '
|
|
end
|
|
|
|
unless paginator.next_page
|
|
if paginator.previous_page
|
|
if flag
|
|
text = l(:label_next)
|
|
else
|
|
text = l(:label_next) + " \xc2\xbb"
|
|
end
|
|
html << "<li>" << yield(text, {page_param => paginator.next_page}, :class => 'next c_blue', :remote => remote) << "</li>" + ' '
|
|
end
|
|
end
|
|
|
|
# html << content_tag('span', "(#{paginator.first_item}-#{paginator.last_item}/#{paginator.item_count})", :class => 'items') + ' '
|
|
#
|
|
# if per_page_links != false && links = per_page_links(paginator, &block)
|
|
# html << content_tag('span', links.to_s, :class => 'per-page')
|
|
# end
|
|
|
|
html.html_safe
|
|
end
|
|
|
|
# Renders the "Per page" links.
|
|
def per_page_links(paginator, &block)
|
|
values = per_page_options(paginator.per_page, paginator.item_count)
|
|
if values.any?
|
|
links = values.collect do |n|
|
|
if n == paginator.per_page
|
|
content_tag('span', n.to_s)
|
|
else
|
|
yield(n, :per_page => n, paginator.page_param => nil)
|
|
end
|
|
end
|
|
l(:label_display_per_page, links.join(', ')).html_safe
|
|
end
|
|
end
|
|
|
|
def per_page_options(selected=nil, item_count=nil)
|
|
options = Setting.per_page_options_array
|
|
if item_count && options.any?
|
|
if item_count > options.first
|
|
max = options.detect {|value| value >= item_count} || item_count
|
|
else
|
|
max = item_count
|
|
end
|
|
options = options.select {|value| value <= max || value == selected}
|
|
end
|
|
if options.empty? || (options.size == 1 && options.first == selected)
|
|
[]
|
|
else
|
|
options
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|