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Code Packages Activity Actions 11

display 'similar to' earlier when composing a post

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Régis Hanol 2017-09-16 01:03:29 +02:00
parent 32972de2d7
commit 8ed318c4fe
7 changed files with 41 additions and 69 deletions
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50
app/models/topic.rb
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@ -436,42 +436,46 @@ class Topic < ActiveRecord::Base
archetype == Archetype.private_message
end
MAX_SIMILAR_BODY_LENGTH = 200
# Search for similar topics
def self.similar_to(title, raw, user = nil)
return [] unless title.present?
return [] unless raw.present?
MAX_SIMILAR_BODY_LENGTH ||= 200
filter_words = Search.prepare_data(title + " " + raw[0...MAX_SIMILAR_BODY_LENGTH]);
def self.similar_to(title, raw, user = nil)
return [] if title.blank?
raw = raw.presence || ""
search_data = "#{title} #{raw[0...MAX_SIMILAR_BODY_LENGTH]}".strip
filter_words = Search.prepare_data(search_data)
ts_query = Search.ts_query(filter_words, nil, "|")
# Exclude category definitions from similar topic suggestions
candidates = Topic.visible
.secured(Guardian.new(user))
candidates = Topic
.visible
.listable_topics
.joins('JOIN topic_search_data s ON topics.id = s.topic_id')
.secured(Guardian.new(user))
.joins("JOIN topic_search_data s ON topics.id = s.topic_id")
.joins("LEFT JOIN categories c ON topics.id = c.topic_id")
.where("search_data @@ #{ts_query}")
.where("c.topic_id IS NULL")
.order("ts_rank(search_data, #{ts_query}) DESC")
.limit(SiteSetting.max_similar_results * 3)
exclude_topic_ids = Category.pluck(:topic_id).compact!
if exclude_topic_ids.present?
candidates = candidates.where("topics.id NOT IN (?)", exclude_topic_ids)
end
candidate_ids = candidates.pluck(:id)
return [] unless candidate_ids.present?
return [] if candidate_ids.blank?
similar = Topic.select(sanitize_sql_array(["topics.*, similarity(topics.title, :title) + similarity(topics.title, :raw) AS similarity, p.cooked as blurb", title: title, raw: raw]))
similars = Topic
.joins("JOIN posts AS p ON p.topic_id = topics.id AND p.post_number = 1")
.limit(SiteSetting.max_similar_results)
.where("topics.id IN (?)", candidate_ids)
.where("similarity(topics.title, :title) + similarity(topics.title, :raw) > 0.2", raw: raw, title: title)
.order('similarity desc')
.order("similarity DESC")
.limit(SiteSetting.max_similar_results)
similar
if raw.present?
similars
.select(sanitize_sql_array(["topics.*, similarity(topics.title, :title) + similarity(p.raw, :raw) AS similarity, p.cooked AS blurb", title: title, raw: raw]))
.where("similarity(topics.title, :title) + similarity(p.raw, :raw) > 0.2", title: title, raw: raw)
else
similars
.select(sanitize_sql_array(["topics.*, similarity(topics.title, :title) AS similarity, p.cooked AS blurb", title: title]))
.where("similarity(topics.title, :title) > 0.2", title: title)
end
end
def update_status(status, enabled, user, opts = {})
@ -481,7 +485,7 @@ class Topic < ActiveRecord::Base
# Atomically creates the next post number
def self.next_post_number(topic_id, reply = false, whisper = false)
highest = exec_sql("select coalesce(max(post_number),0) as max from posts where topic_id = ?", topic_id).first['max'].to_i
highest = exec_sql("SELECT coalesce(max(post_number),0) AS max FROM posts WHERE topic_id = ?", topic_id).first['max'].to_i
if whisper