class PatternQueryHelper::Pagination
Public Class Methods
create_pagination_payload(count, pagination_params)
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# File lib/pattern_query_helper/pagination.rb, line 18 def self.create_pagination_payload(count, pagination_params) page = pagination_params[:page] per_page = pagination_params[:per_page] total_pages = (count/(per_page.nonzero? || 1).to_f).ceil next_page = page + 1 if page.between?(1, total_pages - 1) previous_page = page - 1 if page.between?(2, total_pages) first_page = page == 1 last_page = page == total_pages out_of_range = !page.between?(1,total_pages) { count: count, current_page: page, next_page: next_page, previous_page: previous_page, total_pages: total_pages, per_page: per_page, first_page: first_page, last_page: last_page, out_of_range: out_of_range } end
paginate_active_record_query(active_record_call, pagination_params)
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# File lib/pattern_query_helper/pagination.rb, line 41 def self.paginate_active_record_query(active_record_call, pagination_params) page = pagination_params[:page] per_page = pagination_params[:per_page] active_record_call.page(page).per(per_page) end
parse_pagination_params(page, per_page)
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# File lib/pattern_query_helper/pagination.rb, line 6 def self.parse_pagination_params(page, per_page) page = page ? page.to_i : 1 per_page = per_page ? per_page.to_i : 20 raise RangeError.new("page must be greater than 0") unless page > 0 raise RangeError.new("per_page must be greater than 0") unless per_page > 0 { page: page, per_page: per_page } end