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Contents
module Mack
module Database
class Paginator
# Implements the paginate method from the Mack::Database::Paginator spec in mack-orm.
def paginate
order_clause = [self.query_options.delete(:order)].flatten.compact
self.total_results = self.klass.count(self.query_options)
self.total_pages = (self.total_results.to_f / self.results_per_page).ceil
self.current_page = self.total_pages if self.current_page > self.total_pages
if order_clause.empty?
self.klass.key.each do |k|
order_clause << k.name.to_sym.asc
end
end
self.query_options.reverse_merge!({
:order => order_clause
})
offset = (self.current_page - 1) * self.results_per_page
offset = 0 if offset < 0
self.query_options.merge!({
:limit => self.results_per_page,
:offset => offset
})
self.results = self.klass.all(self.query_options)
self
end # paginate
end # Paginator
end # Database
end # Mack
module DataMapper # :nodoc:
module Resource # :nodoc:
module ClassMethods # :nodoc:
def paginate(options = {}, query_options = {})
paginator = Mack::Database::Paginator.new(self, options, query_options)
paginator.paginate
end
end # ClassMethods
end # Resource
end # DataMapper
Version data entries
4 entries across 4 versions & 1 rubygems