class FortyFacets::FacetFilterDefinition::HasManyFilter

Public Instance Methods

build_scope() click to toggle source
# File lib/forty_facets/filter/facet_filter_definition.rb, line 117
def build_scope
  return Proc.new { |base| base } if empty?
  Proc.new do |base|
    base_table = definition.origin_class.table_name

    primary_key_column = "#{base_table}.#{definition.origin_class.primary_key}"

    matches_from_facet = base.joins(definition.joins).where("#{definition.association.klass.table_name}.#{definition.association.klass.primary_key}" => values).select(primary_key_column)

    base.joins(definition.joins).where(primary_key_column => matches_from_facet)
  end
end
facet() click to toggle source
# File lib/forty_facets/filter/facet_filter_definition.rb, line 130
def facet
  base_table = definition.search.root_class.table_name
  join_name =  [definition.association.name.to_s, base_table.to_s].sort.join('_')
  foreign_id_col = definition.association.name.to_s.singularize + '_id'
  my_column = join_name + '.' + foreign_id_col
  counts = without.result(skip_ordering: true)
            .distinct
            .joins(definition.joins)
            .select("#{my_column} as foreign_id, count(#{my_column}) as occurrences")
            .group(my_column)
  counts.includes_values = []
  entities_by_id = definition.association.klass.unscoped.find(counts.map(&:foreign_id)).group_by(&:id)

  facet = counts.map do |count|
    facet_entity = entities_by_id[count.foreign_id].first
    is_selected = selected.include?(facet_entity)
    FacetValue.new(facet_entity, count.occurrences, is_selected)
  end

  order_facet!(facet)
end