class BrowsePagePresenter DEFAULT_CATEGORY = :public DEFAULT_ORDER = :recency PER_PAGE = 12 attr_reader :scope, :category, :order, :page, :per_page def self.build(scope, category, order, page = nil, per_page = nil) new( scope, (category || DEFAULT_CATEGORY).to_sym, (order || DEFAULT_ORDER).to_sym, page || 1, per_page || PER_PAGE ) end def initialize(scope, category, order, page, per_page) @scope = scope @category = category @order = order @page = page @per_page = per_page end def category_name "#{category.to_s.capitalize} asciicasts" end def items @items ||= get_items end private def get_items PaginatingDecorator.new( scope.for_category_ordered(category, order, page, per_page) ) end end