module Banzai
  # Common methods for ReferenceFilters that support an optional cross-project
  # reference.
  module CrossProjectReference
    # Given a cross-project reference string, get the Project record
    #
    # Defaults to value of `context[:project]` if:
    # * No reference is given OR
    # * Reference given doesn't exist
    #
    # ref - String reference.
    #
    # Returns a Project, or nil if the reference can't be found
    def project_from_ref(ref)
      return context[:project] unless ref

      Project.find_by_full_path(ref)
    end
  end
end