64 lines
2.2 KiB
Ruby
64 lines
2.2 KiB
Ruby
class RelatedContent < ActiveRecord::Base
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RELATED_CONTENT_SCORE_THRESHOLD = Setting['related_content_score_threshold'].to_f
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RELATIONABLE_MODELS = %w{proposals debates}.freeze
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acts_as_paranoid column: :hidden_at
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include ActsAsParanoidAliases
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belongs_to :author, class_name: 'User', foreign_key: 'author_id'
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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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has_many :related_content_scores
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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_create :create_author_score
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scope :not_hidden, -> { where(hidden_at: nil) }
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def score_positive(user)
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score(RelatedContentScore::SCORES[:POSITIVE], user)
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end
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def score_negative(user)
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score(RelatedContentScore::SCORES[:NEGATIVE], user)
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end
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def scored_by_user?(user)
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related_content_scores.exists?(user: user)
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end
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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,
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child_relationable: parent_relationable, author: author)
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self.opposite_related_content = related_content
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end
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def score(value, user)
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score_with_opposite(value, user)
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hide_with_opposite if (related_content_scores.sum(:value) / related_content_scores_count) < RELATED_CONTENT_SCORE_THRESHOLD
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end
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def hide_with_opposite
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hide
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opposite_related_content.hide
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end
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def create_author_score
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score_positive(author)
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end
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def score_with_opposite(value, user)
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RelatedContentScore.create(user: user, related_content: self, value: value)
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RelatedContentScore.create(user: user, related_content: opposite_related_content, value: value)
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end
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end
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