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implemented numbered paginator

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This commit is contained in:
albert
2010-03-19 17:03:14 -04:00
parent be10906044
commit f112ff7c67
4 changed files with 45 additions and 56 deletions
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75
app/presenters/post_set_presenter.rb
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@@ -42,60 +42,47 @@ class PostSetPresenter < Presenter
def numbered_pagination_html(template)
total_pages = (@post_set.count.to_f / @post_set.limit.to_f).ceil
current_page = [1, @post_set.page].max
before_current_page = current_page - 1
after_current_page = current_page + 1
html = "<menu>"
current_page_min = [1, current_page - 2].max
current_page_max = [total_pages, current_page + 2].min
if current_page == 1
# do nothing
elsif current_page_min == 1
1.upto(before_current_page) do |i|
html << numbered_pagination_item(template, i)
window = 3
if total_pages <= (window * 2) + 5
1.upto(total_pages) do |page|
html << numbered_pagination_item(template, page, current_page)
end
elsif current_page <= window + 2
1.upto(current_page + window) do |page|
html << numbered_pagination_item(template, page, current_page)
end
html << numbered_pagination_item(template, "...", current_page)
html << numbered_pagination_item(template, total_pages, current_page)
elsif current_page >= total_pages - (window + 1)
html << numbered_pagination_item(template, 1, current_page)
html << numbered_pagination_item(template, "...", current_page)
(current_page - window).upto(total_pages) do |page|
html << numbered_pagination_item(template, page, current_page)
end
else
1.upto(3) do |i|
html << numbered_pagination_item(template, i)
end
html << "<li>...</li>"
current_page_min.upto(before_current_page) do |i|
html << numbered_pagination_item(template, i)
html << numbered_pagination_item(template, 1, current_page)
html << numbered_pagination_item(template, "...", current_page)
(current_page - window).upto(current_page + window) do |page|
html << numbered_pagination_item(template, page, current_page)
end
html << numbered_pagination_item(template, "...", current_page)
html << numbered_pagination_item(template, total_pages, current_page)
end
html << %{<li class="current-page">#{current_page}</li>}
if current_page == total_pages
# do nothing
elsif current_page_max == total_pages
after_current_page.upto(total_pages) do |i|
html << numbered_pagination_item(template, i)
end
else
after_current_page.upto(after_current_page + 2) do |i|
html << numbered_pagination_item(template, i)
end
if total_pages > 5
html << "<li>...</li>"
(after_current_page + 3).upto(total_pages) do |i|
html << numbered_pagination_item(template, i)
end
end
end
html << "</menu>"
html.html_safe
end
def numbered_pagination_item(template, page)
def numbered_pagination_item(template, page, current_page)
html = "<li>"
html << template.link_to(page, template.__send__(:posts_path, :tags => template.params[:tags], :page => page))
if page == "..."
html << "..."
elsif page == current_page
html << page.to_s
else
html << template.link_to(page, template.__send__(:posts_path, :tags => template.params[:tags], :page => page))
end
html << "</li>"
html.html_safe
end