module Mexico::FileSystem::StaticCollectionRef
The IdRef
module provides a simple mechanism to map IDREF attributes in an XML document to Ruby objects that are stored elsewhere in the object tree. They are retrieved and accessed via the central corpus object.
Public Instance Methods
collection_ref(field_identifier, field_class, field_collection, default)
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Defines a foreign key reference for an object. By default, it will refer to the corresponding collection in the top-level corpus, and it will retrieve the object via its identifier
field.
# File lib/mexico/file_system/static_collection_ref.rb, line 28 def collection_ref(field_identifier, field_class, field_collection, default) field_name = field_identifier.to_s pluralized_field_name = "#{field_name}s" field_name_id = "#{field_name}_id" define_method field_name do if instance_variable_get("@#{field_name}").nil? self.send("#{field_name}=", instance_variable_get("@#{field_name_id}")) # self.instance_variable_set("@#{field_name}", instance_variable_get("@#{field_name_id}")) end return instance_variable_get("@#{field_name}") end define_method "#{field_name}=" do |param| #instance_variable_set("@#{field_name_id}", param.identifier) #instance_variable_set("@#{field_name}", param) if param.nil? instance_variable_set "@#{field_name}", default # Mexico::Constants::MediaTypes::OTHER elsif param.kind_of?(String) #@media_type = Mexico::Constants::MediaTypes::ALL.find{|m| m.identifier==new_media_type.to_s} instance_variable_set "@#{field_name}", field_collection.find{|i| i.identifier==param.to_s} if instance_variable_get("@#{field_name}").blank? instance_variable_set "@#{field_name}", default end elsif param.kind_of?(field_class) instance_variable_set "@#{field_name}", param end @media_type_id = @media_type.identifier instance_variable_set "@#{field_name_id}", instance_variable_get("@#{field_name}").identifier return instance_variable_get("@#{field_name}") end end