```ruby
class Post < ActiveRecord::Base
  has_many :comments
  has_many :admin_comments, class_name: "Comment", :conditions => { :author => "Admin" }
  has_many :people
end
```

Make sure that the tests can run on all platforms, do not use 1.9 hash syntax.
user
```ruby
class Post < ActiveRecord::Base
  has_many :comments
  has_many :admin_comments, :class_name => "Comment", :conditions => { :author => "Admin" }
  has_many :people
end
```
assistant