Module: Sequel::DatasetPagination

Public Instance methods

each_page(page_size) {|paginate(page_no, page_size, record_count)}| ...}

Yields a paginated dataset for each page and returns the receiver. Does a count to find the total number of records for this dataset. Returns an enumerator if no block is given.

[Source]

    # File lib/sequel/extensions/pagination.rb, line 55
55:     def each_page(page_size)
56:       raise(Error, "You cannot paginate a dataset that already has a limit") if @opts[:limit]
57:       return to_enum(:each_page, page_size) unless block_given?
58:       record_count = count
59:       total_pages = (record_count / page_size.to_f).ceil
60:       (1..total_pages).each{|page_no| yield paginate(page_no, page_size, record_count)}
61:       self
62:     end

paginate(page_no, page_size, record_count=nil)

Returns a paginated dataset. The returned dataset is limited to the page size at the correct offset, and extended with the Pagination module. If a record count is not provided, does a count of total number of records for this dataset.

[Source]

    # File lib/sequel/extensions/pagination.rb, line 40
40:     def paginate(page_no, page_size, record_count=nil)
41:       raise(Error, "You cannot paginate a dataset that already has a limit") if @opts[:limit]
42: 
43:       record_count ||= count
44:       page_count = (record_count / page_size.to_f).ceil
45:       page_count = 1 if page_count == 0
46: 
47:       limit(page_size, (page_no - 1) * page_size).
48:         with_extend(Dataset::Pagination).
49:         clone(:page_size=>page_size, :current_page=>page_no, :pagination_record_count=>record_count, :page_count=>page_count)
50:     end

Methods

Public Instance methods