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module Searchlogic module NamedScopes # Handles dynamically creating order named scopes for associations: # # User.has_many :orders # Order.has_many :line_items # LineItem # # User.ascend_by_orders_line_items_id # # See the README for a more detailed explanation. module AssociationOrdering def condition?(name) # :nodoc: super || association_ordering_condition?(name) end private def association_ordering_condition?(name) !association_ordering_condition_details(name).nil? end def create_condition(name) if details = association_ordering_condition_details(name) create_association_ordering_condition(details[:association], details[:order_as], details[:condition]) else super end end def association_ordering_condition_details(name) associations = reflect_on_all_associations association_names = associations.collect { |assoc| assoc.name } if name.to_s =~ /^(ascend|descend)_by_(#{association_names.join("|")})_(\w+)$/ {:order_as => $1, :association => associations.find { |a| a.name == $2.to_sym }, :condition => $3} end end def create_association_ordering_condition(association, order_as, condition) cond = condition poly_class = nil if condition =~ /^(\w+)_type_(\w+)$/ poly_type = $1 cond = $2 poly_class = poly_type.camelcase.constantize if poly_type end named_scope("#{order_as}_by_#{association.name}_#{condition}", association_condition_options(association, "#{order_as}_by_#{cond}", poly_class)) end end end end
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20 entries across 20 versions & 1 rubygems