ruby on rails - Calling destroy on relation in Mongoid many to many relation with helper model does not remove model from List -


i have many many relation user project helper model. user , project has many user_project_memberships , user_project_membership has 1 project , 1 user. when try remove relation project's related_users (or user's related_projects) data removed database correctly related_users array still has relation data!

  def remove_user(uid)     rel = self.related_users.where(user_id: uid)[0]     if rel       rel.destroy       self.related_users.delete(rel) # added remove relation manually     end   end

project.related_users.count return correct amount of relations project code not doing expected!

project.related_users.each |user|      puts user.id end

if project.related_users.count shows 4 small code above prints hello 5 times!

any appreciated, know happened!

ps : i'm not expert in ruby, it's maybe ruby's problem!


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