27 lines
1.4 KiB
Ruby
27 lines
1.4 KiB
Ruby
class RelatedContent < ActiveRecord::Base
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RELATED_CONTENTS_REPORT_THRESHOLD = Setting['related_contents_report_threshold'].to_f
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RELATIONABLE_MODELS = %w{proposals debates}.freeze
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belongs_to :parent_relationable, polymorphic: true, touch: true
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belongs_to :child_relationable, polymorphic: true, touch: true
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has_one :opposite_related_content, class_name: 'RelatedContent', foreign_key: :related_content_id
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validates :parent_relationable_id, presence: true
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validates :parent_relationable_type, presence: true
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validates :child_relationable_id, presence: true
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validates :child_relationable_type, presence: true
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validates :parent_relationable_id, uniqueness: { scope: [:parent_relationable_type, :child_relationable_id, :child_relationable_type] }
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after_create :create_opposite_related_content, unless: proc { opposite_related_content.present? }
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after_destroy :destroy_opposite_related_content, if: proc { opposite_related_content.present? }
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scope :not_hidden, -> { where('positive_score - negative_score / LEAST(nullif(positive_score + negative_score, 0), 1) >= ?', RELATED_CONTENTS_REPORT_THRESHOLD) }
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private
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def create_opposite_related_content
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related_content = RelatedContent.create!(opposite_related_content: self, parent_relationable: child_relationable, child_relationable: parent_relationable)
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self.opposite_related_content = related_content
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end
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end
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