|
|
关于will_paginate插件，请看这个帖子: http://mmm.javaeye.com/blog/116931。 文/陈刚 (www.chengang.com.cn)
但一直搜不到它支持ajax分面的方法 ，于是我参考它分页方法的源代码(位于:vendor/plugins/will_paginate/lib/will_paginate/view_helpers.rb)，稍微改写，变成了一个支持ajax的分页方法。以下代码复制到application_helper里即可。
#-----------------------------------------
# will_paginate插件的ajax分页
#-----------------------------------------
@@pagination_options = { :class => 'pagination',
:prev_label => '上一页',
:next_label => '下一页',
:inner_window => 4, # links around the current page
:outer_window => 1, # links around beginning and end
:separator => ' ', # single space is friendly to spiders and non-graphic browsers
:param_name => :page,
#add by chengang
:update =>nil, #ajax所要更新的html元素的id
:url_suffix => '' #url的后缀，主要是为了补全REST所需要的url
#add end
}
mattr_reader :pagination_options
def will_paginate_remote(entries = @entries, options = {})
total_pages = entries.page_count
if total_pages > 1
options = options.symbolize_keys.reverse_merge(pagination_options)
page, param = entries.current_page, options.delete(:param_name)
inner_window, outer_window = options.delete(:inner_window).to_i, options.delete(:outer_window).to_i
#add by chengang
update = options.delete(:update)
suffix = options.delete(:url_suffix)
url = request.env['PATH_INFO']
url += suffix if suffix
#add end
min = page - inner_window
max = page + inner_window
if max > total_pages then min -= max - total_pages
elsif min < 1 then max += 1 - min
end
current = min..max
beginning = 1..(1 + outer_window)
tail = (total_pages - outer_window)..total_pages
visible = [beginning, current, tail].map(&:to_a).flatten.sort.uniq
links, prev = [], 0
visible.each do |n|
next if n < 1
break if n > total_pages
unless n - prev > 1
prev = n
#change by chengang
text = (n==page ? n : "[#{n}]")
links << page_link_remote_or_span((n != page ? n : nil), 'current', text, param, update, url)
else
prev = n - 1
links << ' '
redo
end
end
#change by chengang
links.unshift page_link_remote_or_span(entries.previous_page, 'disabled', options.delete(:prev_label), param, update, url)
links.push page_link_remote_or_span(entries.next_page, 'disabled', options.delete(:next_label), param, update, url)
#change end
content_tag :div, links.join(options.delete(:separator)), options
end
end
protected
def page_link_remote_or_span(page, span_class, text, param, update, url)
unless page
content_tag :span, text, :class => span_class
else
link_to_remote text, :update => update, :url => "#{url}?#{param.to_sym}=#{page}", :method=>:get
end
end
在view中的使用如下所示: <%=will_paginate_remote @topics, :update => 'topicList', :url_suffix => url_suffix%>
|