Class: ActiveFedora::Associations::Builder::DirectlyContainsOne

Inherits:
SingularAssociation show all
Defined in:
lib/active_fedora/associations/builder/directly_contains_one.rb

Overview

:nodoc:

Constant Summary

Constants inherited from Association

Association::VALID_OPTIONS

Class Method Summary collapse

Methods inherited from SingularAssociation

define_accessors, define_constructors

Methods inherited from Association

add_destroy_callbacks, better_name, build, build_scope, check_dependent_options, define_accessors, define_callbacks, define_extensions, define_readers, define_validations, define_writers, valid_dependent_options, wrap_scope

Class Method Details

.create_reflection(model, name, scope, options, extension = nil) ⇒ Object 



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# File 'lib/active_fedora/associations/builder/directly_contains_one.rb', line 11

def self.create_reflection(model, name, scope, options, extension = nil)
  if options[:through]
    inherit_options_from_association(model, options, options[:through])
  else
    raise ArgumentError, "you must specify a :through option on #{name}.  #{name} will use the container from that directly_contains association."
  end

  super
end

.macro ⇒ Object 



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# File 'lib/active_fedora/associations/builder/directly_contains_one.rb', line 3

def self.macro
  :directly_contains_one
end

.valid_options(options) ⇒ Object 



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# File 'lib/active_fedora/associations/builder/directly_contains_one.rb', line 7

def self.valid_options(options)
  super + [:has_member_relation, :is_member_of_relation, :type, :through] - [:predicate]
end

.validate_options(options) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/active_fedora/associations/builder/directly_contains_one.rb', line 21

def self.validate_options(options)
  super
  if options[:class_name] == "ActiveFedora::File"
    raise ArgumentError, "You cannot set :class_name of #{name} to ActiveFedora::File because directly_contains_one needs to assert and read RDF.type assertions, which is not supported by ActiveFedora::File.  To make Files support RDF.type assertions, define a subclass of ActiveFedora::File and make it `include ActiveFedora::WithMetadata`. Otherwise, all subclasses of ActiveFedora::Base support RDF.type assertions."
  elsif !options[:has_member_relation] && !options[:is_member_of_relation]
    raise ArgumentError, "You must specify a :has_member_relation or :is_member_of_relation predicate for #{name}"
  elsif !options[:has_member_relation].is_a?(RDF::URI) && !options[:is_member_of_relation].is_a?(RDF::URI)
    raise ArgumentError, "Predicate must be a kind of RDF::URI"
  end

  return if options[:type].is_a?(RDF::URI)
  raise ArgumentError, "You must specify a Type and it must be a kind of RDF::URI"
end