Module | Sequel::DatasetPagination |
In: |
lib/sequel/extensions/pagination.rb
|
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.
# File lib/sequel/extensions/pagination.rb, line 34 34: def each_page(page_size) 35: raise(Error, "You cannot paginate a dataset that already has a limit") if @opts[:limit] 36: return to_enum(:each_page, page_size) unless block_given? 37: record_count = count 38: total_pages = (record_count / page_size.to_f).ceil 39: (1..total_pages).each{|page_no| yield paginate(page_no, page_size, record_count)} 40: self 41: end
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.
# File lib/sequel/extensions/pagination.rb, line 24 24: def paginate(page_no, page_size, record_count=nil) 25: raise(Error, "You cannot paginate a dataset that already has a limit") if @opts[:limit] 26: paginated = limit(page_size, (page_no - 1) * page_size) 27: paginated.extend(Dataset::Pagination) 28: paginated.set_pagination_info(page_no, page_size, record_count || count) 29: end