module RSolr::Pagination::PaginatedDocSet

def current_page

WillPaginate hook
Returns the current page calculated from 'rows' and 'start' 
def current_page
  return 1 if start < 1
  per_page_normalized = per_page < 1 ? 1 : per_page
  @current_page ||= (start / per_page_normalized).ceil + 1
end

def has_next? 

def has_next?
  current_page < total_pages
end

def has_previous? 

def has_previous?
  current_page > 1
end

def next_page

WillPaginate hook
returns the next page number or the last 
def next_page
  @next_page ||= (current_page == total_pages) ? total_pages : current_page+1
end

def previous_page

WillPaginate hook
returns the previous page number or 1 
def previous_page
  @previous_page ||= (current_page > 1) ? current_page - 1 : 1
end

def total_pages

WillPaginate hook
Calcuates the total pages from 'numFound' and 'rows' 
def total_pages
  @total_pages ||= per_page > 0 ? (total / per_page.to_f).ceil : 1
end