app/models/venue.rb
class Venue < ApplicationRecord
has_many :events
validates :name, presence: true
validates :city, presence: true
validates :lng, presence: true
validates :lat, presence: true
validates :country, presence: true
validates :country_code, presence: true
# TODO: get list of countries and country codes, for admin
# TODO: automatically find lng/lat for self added events
end