Module: Sequel::Plugins::Cascading

Defined in:
lib/sequel_cascading.rb

Class Method Summary collapse

Class Method Details

.apply(model, options = {}) ⇒ Object 



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# File 'lib/sequel_cascading.rb', line 4

def self.apply(model, options = {})
  Array(options[:destroy]).each do |assoc|
    model.instance_eval "def before_destroy; super; #{assoc}_dataset.destroy; end"
  end
  Array(options[:nullify]).each do |assoc|
    model.instance_eval "def before_destroy; super; remove_all_#{assoc}; end"
  end
  Array(options[:restrict]).each do |assoc|
    model.instance_eval "def before_destroy; super; raise Error::InvalidOperation, 'Delete would orphan associated #{assoc}' unless #{assoc}_dataset.empty?; end"
  end
end