class Ahoy::Visit < ApplicationRecord
  self.table_name = "ahoy_visits"

  has_many :events, class_name: "Ahoy::Event"
  belongs_to :user, optional: true
end

class Ahoy::Visit < ApplicationRecord
  self.table_name = "ahoy_visits"

  has_many :events, class_name: "Ahoy::Event"
  belongs_to :user, optional: true
  belongs_to :site, optional: true
end

Add association of Ahoy::Visit model with Site
Add association of Ahoy::Visit model with Site
