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class Notice < ActiveRecord::Base
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has_and_belongs_to_many :users, :join_table =>'user_notices'
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TYPES = %w{message warning}
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before_validation :set_default_notice_level
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validates :level, :inclusion => { :in => TYPES }
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validates :content, :presence => true
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before_save :add_to_users
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def to_s
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"#{global? ? "global" : "individual"} #{content}"
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end
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def destroy_notice
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if global
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destroy
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else
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users.delete(User.current)
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destroy unless users.any?
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end
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end
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private
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def add_to_users
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if global
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self.users = [User.current]
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else
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self.users = User.all
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end
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end
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def set_default_notice_level
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self.level ||= TYPES.first
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end
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end
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