```ruby
class User < ActiveRecord::Base
  has_many :questions, foreign_key: :asker_id
  has_many :answers, foreign_key: :responder_id
  has_many :votes, foreign_key: :voter_id
  has_many :responses, foreign_key: :commenter_id
end
```

Fix foreign key from commenter_id to responder_id
user
```ruby
class User < ActiveRecord::Base
  has_many :questions, foreign_key: :asker_id
  has_many :answers, foreign_key: :responder_id
  has_many :votes, foreign_key: :voter_id
  has_many :responses, foreign_key: :responder_id
end
```
assistant