46 lines
1.8 KiB
Ruby
46 lines
1.8 KiB
Ruby
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class Tagging < ApplicationRecord
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belongs_to :tagger, polymorphic: true, inverse_of: :taggings, autosave: true
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belongs_to :taggable, polymorphic: true, touch: true, inverse_of: :taggings
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validates_presence_of :tagger, :taggable
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# When we create or destroy a tagging, it may change the taggings count.
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after_create :update_taggings_count
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after_destroy :update_taggings_count
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after_commit :update_search
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after_create :update_filters
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after_destroy :update_filters
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def update_filters
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return unless taggable.is_a?(Filterable)
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taggable.update_filters
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end
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def self.find_by_tag(taggable, tag)
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Tagging.find_by(tagger_id: tag.id, taggable_id: taggable.id, tagger_type: 'Tag', taggable_type: taggable.class.name)
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end
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# Most of the time, we don't need the taggings_count_cache stored in the
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# database to be perfectly accurate. But because of the way Tag.in_use is
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# defined and used, the difference between a value of 0 and a value of 1 is
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# important. So we make sure to poke the taggings_count cache every time we
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# create or destroy a tagging. If it's a large tag, it'll fall back on the
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# cached value. If it's a small tag, it'll recompute -- and make sure that it
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# handles the transition from 0 uses to 1 use properly.
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def update_taggings_count
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tagger.update_tag_cache unless tagger.blank? || tagger.destroyed?
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end
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def update_search
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return unless tagger && Tag::USER_DEFINED.include?(tagger.type)
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# Reindex the tag for updated suggested tags.
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# Suggested tags help wranglers figure out where to wrangle new tags
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# and if it's necessary to disambiguate existing canonical/unfilterable tags
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# in multiple fandoms.
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tagger.enqueue_to_index if tagger.taggings_count < ArchiveConfig.TAGGINGS_COUNT_REINDEX_LIMIT
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end
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end
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