schedule.rb
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	# Schedule model is the application representation of Bacula's Schedule.
	# It has references to a host and multiple schedule run in order to provide
	# the desired Bacula configuration
	class Schedule < ActiveRecord::Base
	establish_connection ARCHIVING_CONF

	has_many :schedule_runs

	belongs_to :host
	has_many :job_templates

	validates :name, presence: true
	validates :name, uniqueness: { scope: :host }
	validates_with NameValidator

	accepts_nested_attributes_for :schedule_runs, allow_destroy: true

	# Constructs an array where each element is a line for the Schedule's bacula config
	#
	# @return [Array]
	def to_bacula_config_array
	['Schedule {'] +
	[" Name = \"#{name_for_config}\""] +
	schedule_runs.map {\|r\| " Run = #{r.schedule_line}" } +
	['}']
	end

	# Generates a name that will be used for the configuration file.
	# It is the name that will be sent to Bacula through the configuration
	# files.
	#
	# @return [String]
	def name_for_config
	[host.name, name].join(' ')
	end

	# Returns the hosts that have enabled jobs that use this schedule
	#
	# @return [ActiveRecord::Colletion] the participating hosts
	def participating_hosts
	Host.joins(:job_templates).where(job_templates: { enabled: true, schedule_id: id }).uniq
	end
	end