postgresql - Reassociate all related models in rails -

ok, f&^%$**&ed up.

we lost bunch of user records. @ point, integration file ran re-inserted of lost records.

the problem new users have different id original user, existing related content old user id has been orphaned. need go in , reassociate orphaned stuff new user id. won't enough give new user old id backup, because there new content associated new user id.

we know reflect_on_all_associations method, hard use finding stuff. however, starting point script of kind.

any clues on how have method return models related particular model based on associations, without having specify or know associations?

here's way use reflect_all_associations: can iterate through associations, select has_many , has_one, , update records. here's helper class job can execute calling associationfixer.new(user_to_destroy, original_user_id).fix_associations:

class associationfixer   user_associations = user.reflect_on_all_associations    def initialize(user_to_destroy, original_user_id)     @user_to_destroy = user_to_destroy     @original_user_id = original_user_id   end    def fix_associations     user_associations.each |association|       next if association.options.has_key? :through       if association.macro == :has_many         fix_has_many(association)       elsif association.macro == :has_one         fix_has_one(association)       end     end   end    def fix_has_many(association)     @user_to_destroy.send(association.name).each |record|       if association.options.has_key? :foreign_key         record.send(assignment_method(association.foreign_key), @original_user_id)       else         record.user_id = @original_user_id       end       record.save     end   end    def fix_has_one(association)     if association.options.has_key? :foreign_key       @user_to_destroy.send(association.name).send(assignment_method(association.foreign_key), @original_user_id)     else       @user_to_destroy.send(assignment_method(association.name.user_id), @original_user_id)     end     record.save   end    def assigment_method(method_name)     method_name.to_s + '='   end end