Sha256: db245d24f386b477278a5e37ae92149de2d7453b902bc03dad45901ee855fb20
Contents?: true
Size: 1.04 KB
Versions: 13
Compression:
Stored size: 1.04 KB
Contents
module Godmin
class Paginator
WINDOW_SIZE = 7.freeze
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 ||= @resources.count
end
private
def offset
(current_page * per_page) - per_page
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems