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Contents
require "active_model"
module Duracloud
class AbstractEntity
include ActiveModel::Model
extend ActiveModel::Callbacks
define_model_callbacks :save, :delete, :load_properties
after_save :persisted!
after_save :reset_properties
after_load_properties :persisted!
before_delete :reset_properties
after_delete :deleted!
after_delete :freeze
def save
raise Error, "Cannot save deleted #{self.class}." if deleted?
run_callbacks :save do
do_save
end
end
def delete
raise Error, "Cannot delete, already deleted." if deleted?
run_callbacks :delete do
do_delete
end
end
def persisted?
!!@persisted
end
def deleted?
!!@deleted
end
# Return the properties associated with this resource,
# loading from Duracloud if necessary.
# @return [Duracloud::Properties] the properties
# @raise [Duracloud::NotFoundError] if the resource is marked persisted
# but does not exist in Duracloud
def properties
load_properties if persisted? && @properties.nil?
@properties ||= Properties.new
end
def load_properties
run_callbacks :load_properties do
do_load_properties
end
end
private
def do_load_properties
raise NotImplementedError, "Subclasses must implement `#do_load_properties` private method."
end
def persisted!
@persisted = true
end
def deleted!
@deleted = true
@persisted = false
end
def do_delete
raise NotImplementedError, "Subclasses must implement `do_delete`."
end
def do_save
raise NotImplementedError, "Subclasses must implement `do_save`."
end
def properties=(props)
@properties = Properties.new(props)
end
def reset_properties
@properties = nil
end
def properties_class
Properties
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems