70 lines
1.5 KiB
Ruby
70 lines
1.5 KiB
Ruby
class BroadcastMessage < ActiveRecord::Base
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include CacheMarkdownField
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include Sortable
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cache_markdown_field :message, pipeline: :broadcast_message
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validates :message, presence: true
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validates :starts_at, presence: true
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validates :ends_at, presence: true
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validates :color, allow_blank: true, color: true
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validates :font, allow_blank: true, color: true
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default_value_for :color, '#E75E40'
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default_value_for :font, '#FFFFFF'
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CACHE_KEY = 'broadcast_message_current'.freeze
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after_commit :flush_redis_cache
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def self.current
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messages = Rails.cache.fetch(CACHE_KEY, expires_in: cache_expires_in) { current_and_future_messages.to_a }
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return messages if messages.empty?
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now_or_future = messages.select(&:now_or_future?)
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# If there are cached entries but none are to be displayed we'll purge the
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# cache so we don't keep running this code all the time.
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Rails.cache.delete(CACHE_KEY) if now_or_future.empty?
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now_or_future.select(&:now?)
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end
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def self.current_and_future_messages
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where('ends_at > :now', now: Time.zone.now).order_id_asc
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end
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def self.cache_expires_in
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nil
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end
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def active?
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started? && !ended?
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end
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def started?
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Time.zone.now >= starts_at
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end
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def ended?
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ends_at < Time.zone.now
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end
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def now?
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(starts_at..ends_at).cover?(Time.zone.now)
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end
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def future?
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starts_at > Time.zone.now
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end
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def now_or_future?
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now? || future?
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end
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def flush_redis_cache
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Rails.cache.delete(CACHE_KEY)
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end
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end
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