49 lines
1.6 KiB
Ruby
49 lines
1.6 KiB
Ruby
class QuotedPost < ActiveRecord::Base
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belongs_to :post
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belongs_to :quoted_post, class_name: 'Post'
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# NOTE we already have a path that does this for topic links,
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# however topic links exclude quotes and links within a topic
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# we are double parsing this fragment, this may be worth optimising later
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def self.extract_from(post)
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doc = Nokogiri::HTML.fragment(post.cooked)
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uniq = {}
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ids = []
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doc.css("aside.quote[data-topic]").each do |a|
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topic_id = a['data-topic'].to_i
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post_number = a['data-post'].to_i
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next if topic_id == 0 || post_number == 0
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next if uniq[[topic_id,post_number]]
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uniq[[topic_id,post_number]] = true
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# It would be so much nicer if we used post_id in quotes
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results = exec_sql "INSERT INTO quoted_posts(post_id, quoted_post_id, created_at, updated_at)
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SELECT :post_id, p.id, current_timestamp, current_timestamp
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FROM posts p
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LEFT JOIN quoted_posts q on q.post_id = :post_id AND q.quoted_post_id = p.id
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WHERE post_number = :post_number AND
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topic_id = :topic_id AND
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q.id IS NULL
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RETURNING quoted_post_id
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", post_id: post.id, post_number: post_number, topic_id: topic_id
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results = results.to_a
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if results.length > 0
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ids << results[0]["quoted_post_id"].to_i
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end
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end
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if ids.length > 0
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exec_sql "DELETE FROM quoted_posts WHERE post_id = :post_id AND quoted_post_id NOT IN (:ids)",
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post_id: post.id, ids: ids
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end
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end
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end
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