class PgSearch::ScopeOptions
def apply(scope)
def apply(scope) scope. select("#{quoted_table_name}.*, (#{rank}) AS pg_search_rank"). where(conditions). order("pg_search_rank DESC, #{order_within_rank}"). joins(joins). extend(DisableEagerLoading) end
def conditions
def conditions config.features.reject do |feature_name, feature_options| feature_options && feature_options[:sort_only] end.map do |feature_name, feature_options| feature_for(feature_name).conditions end.inject do |accumulator, expression| Arel::Nodes::Or.new(accumulator, expression) end.to_sql end
def feature_for(feature_name)
def feature_for(feature_name) feature_name = feature_name.to_sym feature_class = FEATURE_CLASSES[feature_name] raise ArgumentError.new("Unknown feature: #{feature_name}") unless feature_class normalizer = Normalizer.new(config) feature_class.new( config.query, feature_options[feature_name], config.columns, config.model, normalizer ) end
def initialize(config)
def initialize(config) @config = config @model = config.model @feature_options = config.feature_options end
def joins
def joins if config.associations.any? config.associations.map do |association| association.join(primary_key) end.join(' ') end end
def order_within_rank
def order_within_rank config.order_within_rank || "#{primary_key} ASC" end
def primary_key
def primary_key "#{quoted_table_name}.#{connection.quote_column_name(@model.primary_key)}" end
def rank
def rank (config.ranking_sql || ":tsearch").gsub(/:(\w*)/) do feature_for($1).rank.to_sql end end