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Versions: 8
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Stored size: 1.16 KB
Contents
module Godmin
class Paginator
WINDOW_SIZE = 7
attr_reader :per_page, :current_page
def initialize(resources, per_page: 25, current_page: nil)
@resources = resources
@per_page = per_page
@current_page = current_page ? current_page.to_i : 1
end
def paginate
@resources.limit(per_page).offset(offset)
end
def pages
@pages ||= begin
pages = (1..total_pages).to_a
return pages unless total_pages > WINDOW_SIZE
if current_page < WINDOW_SIZE
pages.slice(0, WINDOW_SIZE)
elsif current_page > (total_pages - WINDOW_SIZE)
pages.slice(-WINDOW_SIZE, WINDOW_SIZE)
else
pages.slice(pages.index(current_page) - (WINDOW_SIZE / 2), WINDOW_SIZE)
end
end
end
def total_pages
@total_pages ||= (total_resources.to_f / per_page).ceil
end
def total_resources
@total_resources ||= begin
count = @resources.count
if count.respond_to?(:count)
count.count
else
count
end
end
end
private
def offset
(current_page * per_page) - per_page
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems