class BroadcastMessage < ActiveRecord::Base include CacheMarkdownField include Sortable cache_markdown_field :message, pipeline: :broadcast_message validates :message, presence: true validates :starts_at, presence: true validates :ends_at, presence: true validates :color, allow_blank: true, color: true validates :font, allow_blank: true, color: true default_value_for :color, '#E75E40' default_value_for :font, '#FFFFFF' CACHE_KEY = 'broadcast_message_current'.freeze after_commit :flush_redis_cache def self.current Rails.cache.fetch(CACHE_KEY) do where('ends_at > :now AND starts_at <= :now', now: Time.zone.now) .reorder(id: :asc) .to_a end end def active? started? && !ended? end def started? Time.zone.now >= starts_at end def ended? ends_at < Time.zone.now end def flush_redis_cache Rails.cache.delete(CACHE_KEY) end end