Module: Oedipus::DataMapper::Pagination

Included in:
Index
Defined in:
lib/oedipus/data_mapper/pagination.rb

Instance Method Summary collapse

Instance Method Details

#build_pager(results, options) ⇒ Object 



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# File 'lib/oedipus/data_mapper/pagination.rb', line 42

def build_pager(results, options)
  return unless pageable? && Hash === options
  ::DataMapper::Pager.new(options.merge(total: results[:total_found]))
end

#extract_pager_options(filters) ⇒ Object 



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# File 'lib/oedipus/data_mapper/pagination.rb', line 17

def extract_pager_options(filters)
  return unless pageable?

  options = filters.last
  pager   = options.delete(:pager)

  unless pager.nil?
    return unless page = pager[:page]

    page       = [page.to_i, 1].max
    per_page   = pager.fetch(:per_page,   ::DataMapper::Pagination.defaults[:per_page]).to_i
    page_param = pager.fetch(:page_param, ::DataMapper::Pagination.defaults[:page_param])

    options[:limit]  ||= per_page
    options[:offset] ||= (page - 1) * per_page

    pager.merge(
      page_param  => page,
      :page_param => page_param,
      :limit       => options[:limit].to_i,
      :offset      => options[:offset].to_i
    )
  end
end

#pageable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/oedipus/data_mapper/pagination.rb', line 13

def pageable?
  defined? ::DataMapper::Pagination
end