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Contents
# frozen_string_literal: true
module Hyrax
module CustomQueries
module Navigators
##
# Find members of collections and collections for members
#
# @see https://github.com/samvera/valkyrie/wiki/Queries#custom-queries
# @since 3.0.0
class CollectionMembers
##
# @return [Array<Symbol>
def self.queries
[:find_collections_for, :find_members_of]
end
##
# @!attribute [r] query_service
# @return [#custom_queries]
attr_reader :query_service
def initialize(query_service:)
@query_service = query_service
end
##
# Find child works of a given resource, and map to Valkyrie Resources
#
# @param [Valkyrie::Resource] resource
# @return [Array<Valkyrie::Resource>]
def find_collections_for(resource:)
query_service
.find_references_by(resource: resource, property: :member_of_collection_ids)
end
##
# Find members for the given collection
#
# @param [Valkyrie::Resource] collection
# @return [Array<Valkyrie::Resource>]
def find_members_of(collection:)
query_service
.find_inverse_references_by(resource: collection, property: :member_of_collection_ids)
end
end
end
end
end
Version data entries
24 entries across 24 versions & 1 rubygems