Method: Og::SqlStore#eval_og_delete

Defined in:
lib/og/store/sql.rb

#eval_og_delete(klass) ⇒ Object

Compiles the og_delete method for this class. This method is used to delete instances of this class.



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# File 'lib/og/store/sql.rb', line 950

def eval_og_delete klass
  klass.module_eval %{
    def og_delete(store, cascade = true)
      #{insert_advices :pre, :og_delete, klass, :advices}
      
      if cascade
        
        transaction do |tx|
          tx.exec "DELETE FROM #{klass.table} WHERE #{pk_field klass}=\#{pk}"
          if descendants = #{klass}.ann.self[:descendants]
            descendants.each do |dclass, foreign_key|
              tx.exec "DELETE FROM \#{dclass::OGTABLE} WHERE \#{foreign_key}=\#{pk}"
            end
          end
        end
        
      else
        tx.exec "DELETE FROM #{klass.table} WHERE #{pk_field klass}=\#{pk}"
      end
      
      #{insert_advices :post, :og_delete, klass, :advices}
    end
  }
end