Method: Valkyrie::Persistence::Fedora::QueryService#find_parents

Defined in:

lib/valkyrie/persistence/fedora/query_service.rb

#find_parents(resource:) ⇒ Array<Valkyrie::Resource>

Find all parents of a given resource.

Parameters:

• resource (Valkyrie::Resource) —

  The resource whose parents are being searched for.

Returns:

• (Array<Valkyrie::Resource>) —

  All resources which are parents of the given ‘resource`. This means the resource’s ‘id` appears in their `member_ids` array.

# File 'lib/valkyrie/persistence/fedora/query_service.rb', line 41

def find_parents(resource:)
  content = content_with_inbound(id: resource.id)
  parent_ids = content.graph.query([nil, RDF::Vocab::ORE.proxyFor, nil]).map(&:subject).map { |x| x.to_s.gsub(/#.*/, '') }.map { |x| adapter.uri_to_id(x) }
  parent_ids.uniq!
  parent_ids.lazy.map do |id|
    find_by(id: id)
  end
end