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23 lines
659 B
Ruby
23 lines
659 B
Ruby
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class ProtocolProtocolKeyword < ActiveRecord::Base
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after_create :increment_protocols_count
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after_destroy :decrement_protocols_count
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validates :protocol, presence: true
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validates :protocol_keyword, presence: true
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belongs_to :protocol, inverse_of: :protocol_protocol_keywords
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belongs_to :protocol_keyword, inverse_of: :protocol_protocol_keywords
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private
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def increment_protocols_count
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self.protocol_keyword.increment!(:nr_of_protocols)
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end
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def decrement_protocols_count
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self.protocol_keyword.decrement!(:nr_of_protocols)
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if self.protocol_keyword.nr_of_protocols == 0 then
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self.protocol_keyword.destroy
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end
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end
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end
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