subdomains

gistfile1.txt

  constraints SubdomainRequired do
    root to: 'dashboards#show', as: 'subdomain_root'
  end
  
class SubdomainRequired
  def self.matches?(request)
    request.subdomain.present? && request.subdomain != "www"
  end
end


ApplicationController

 before_action :redirect_to_subdomain # 1.

  private

  def redirect_to_subdomain
    return unless user_signed_in? # 2.

    if request.subdomain.blank? # 3.
      if current_user.accounts.any?
        redirect_to root_url(subdomain: current_user.accounts.first.subdomain)
      end
    else # 4.
      unless current_user.accounts.pluck(:subdomain).include?(request.subdomain)
        redirect_to root_url(subdomain: current_user.accounts.first.subdomain)
      end
    end
  end