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Contents
# encoding: utf-8 module Mongoid module Relations module Cascading class Restrict attr_accessor :document, :relation, :metadata # Initialize the new cascade strategy, which will set up the relation # and the metadata. # # @example Instantiate the strategy # Strategy.new(document, metadata) # # @param [ Document ] document The document to cascade from. # @param [ Metadata ] metadata The relation's metadata. # # @return [ Strategy ] The new strategy. def initialize(document, metadata) @document, @metadata = document, metadata @relation = document.send(metadata.name) end # Execute the cascading deletion for the relation if it already exists. # This should be optimized in the future potentially not to load all # objects from the db. # # @example Perform the cascading delete. # strategy.cascade def cascade raise Errors::DeleteRestriction.new(document, metadata.name) unless relation.blank? end end end end end
Version data entries
7 entries across 7 versions & 1 rubygems