Module: ActiveFedora::Model

Extended by:
ActiveSupport::Concern
Defined in:
lib/active_fedora/model.rb

Overview

ActiveFedora

This module mixes various methods into the including class, much in the way ActiveRecord does.

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Class Method Details

.classname_from_uri(uri) ⇒ Object

Takes a Fedora URI for a cModel and returns classname, namespace



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# File 'lib/active_fedora/model.rb', line 11

def self.classname_from_uri(uri)
  local_path = uri.split('/')[1]
  parts = local_path.split(':')
  return parts[-1].split(/_/).map(&:camelize).join('::'), parts[0]
end

.from_class_uri(uri) ⇒ Class, False

Takes a Fedora URI for a cModel, and returns a corresponding Model if available This method should reverse ClassMethods#to_class_uri

Returns:

  • (Class, False) —

    the class of the model or false, if it does not exist



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# File 'lib/active_fedora/model.rb', line 21

def self.from_class_uri(uri)
  model_value, pid_ns = classname_from_uri(uri)
  raise "model URI incorrectly formatted: #{uri}" unless model_value

  unless class_exists?(model_value)
    logger.warn "#{model_value} is not a real class"
    return false
  end
  if model_value.include?("::")
    result = eval(model_value)
  else
    result = Kernel.const_get(model_value)
  end
  unless result.nil?
    model_ns = (result.respond_to? :pid_namespace) ? result.pid_namespace : ContentModel::CMODEL_NAMESPACE
    if model_ns != pid_ns
      logger.warn "Model class namespace '#{model_ns}' does not match uri: '#{uri}'"
    end
  end
  result
end