```ruby
module Landable
  class Author < ActiveRecord::Base
    include Landable::TableName
    has_many :access_tokens

    def self.authenticate!(username, token_id)
      author = where(username: username).first
      return unless author
      return unless author.access_tokens.fresh.exists?(token_id)
      author
    end

    def can_read
      access_tokens.fresh.first.can_read? if access_tokens.fresh
    end

    def can_edit
      access_tokens.fresh.first.can_edit? if access_tokens.fresh
    end

    def can_publish
      access_tokens.fresh.first.can_publish? if access_tokens.fresh
    end
  end
end
```

Remove conditional on can_read?, can_edit? and can_publisH? methods
user
```ruby
module Landable
  class Author < ActiveRecord::Base
    include Landable::TableName
    has_many :access_tokens

    def self.authenticate!(username, token_id)
      author = where(username: username).first
      return unless author
      return unless author.access_tokens.fresh.exists?(token_id)
      author
    end

    def can_read
      access_tokens.fresh.first.can_read?
    end

    def can_edit
      access_tokens.fresh.first.can_edit?
    end

    def can_publish
      access_tokens.fresh.first.can_publish?
    end
  end
end
```
assistant