Sha256: 9fa2a549266543c4395f880c336db4cad6b3852446ba9cc307d6168b7ac769da
Contents?: true
Size: 1.16 KB
Versions: 37
Compression:
Stored size: 1.16 KB
Contents
module Ckeditor
# Simple paginate relation
class Paginatable
attr_reader :limit_value, :offset_value
def initialize(scope, options = {})
@scope = scope
@limit_value = (options[:limit] || Ckeditor.default_per_page).to_i
end
def page(num = 1)
@offset_value = limit_value * ([num.to_i, 1].max - 1)
self
end
def scoped
@scope.limit(limit_value).offset(offset_value)
end
# Next page number in the collection
def next_page
current_page + 1 unless last_page?
end
# Previous page number in the collection
def prev_page
current_page - 1 unless first_page?
end
# First page of the collection?
def first_page?
current_page == 1
end
# Last page of the collection?
def last_page?
current_page >= total_pages
end
# Total number of pages
def total_pages
(total_count.to_f / limit_value).ceil
end
# total item numbers of scope
def total_count
@total_count ||= @scope.count
end
# Current page number
def current_page
offset = (offset_value < 0 ? 0 : offset_value)
(offset / limit_value) + 1
end
end
end
Version data entries
37 entries across 37 versions & 4 rubygems