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# This models a DNS domain and so represents a site.
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class Domain < ActiveRecord::Base
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has_many :hosts
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has_many :subnets
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has_many :domain_parameters, :dependent => :destroy
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accepts_nested_attributes_for :domain_parameters, :reject_if => lambda { |a| a[:value].blank? }, :allow_destroy => true
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validates_uniqueness_of :name
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validates_uniqueness_of :fullname, :allow_blank => true, :allow_nil => true
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validates_format_of :dnsserver, :with => /^\S+$/, :message => "Name cannot contain spaces",
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:allow_blank => true, :allow_nil => true
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validates_format_of :gateway, :with => /^\S+$/, :message => "Name cannot contain spaces",
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:allow_blank => true, :allow_nil => true
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validates_presence_of :name
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default_scope :order => 'name'
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before_destroy Ensure_not_used_by.new(:hosts, :subnets)
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def to_label
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name
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end
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def to_s
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to_label
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end
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# counts how many times a certian fact value exists in this domain
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# used mostly for statistics
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def countFact fact, value
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Host.count :joins => [:domain, :fact_values, :fact_names],
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:conditions => ["domains.name = ? and fact_names.name = ? and fact_values.value = ?", self, fact, value]
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end
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end
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