ruby on rails - What's the best way to conditionally override ActiveRecord's deletion mechanism? -

i trying hijack rails' deletion mechanism make behave differently set of models.

both activerecord::base#delete , #destroy lead activerecord::relation#delete_all, make sense override method.

i have tried...

class mymodel < activerecord::base   class <<     def delete_all       "my destruction mechanism"     end   end end 

... ::all method returns different object every time...

class mymodel < activerecord::base   def self.all     super.tap |obj|       class << obj         def delete_all           "my destruction mechanism"         end       end     end   end end 

... ::all isn't only scope needs overridden anyway...

class activerecord::relation   def delete_all(*args)     "my destruction mechanism"   end end 

... can only apply mymodel , subclasses...

class activerecord::relation   def delete_all(*args)     if @klass.new.is_a?(mymodel)       "my destruction mechanism"     else       super     end   end end 

... causes stack overflows on other models.

help?

overriding delete , destroy on model should accomplish of want. check out how paranoia gem accomplishes overriding. library's 200 lines or so, , handles associated models (eg when have dependent: :destroy).