Fix ・ detection in hashtag regex to construct hashtag correctly (#22888)
* Fix ・ detection in hashtag regex to construct hashtag correctly * Fixed rubocop liniting issues * More rubocop linting fix
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2 changed files with 50 additions and 31 deletions
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@ -26,8 +26,12 @@ class Tag < ApplicationRecord
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has_many :featured_tags, dependent: :destroy, inverse_of: :tag
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has_many :followers, through: :passive_relationships, source: :account
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HASHTAG_SEPARATORS = "_\u00B7\u200c"
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HASHTAG_NAME_PAT = "([[:word:]_][[:word:]#{HASHTAG_SEPARATORS}]*[[:alpha:]#{HASHTAG_SEPARATORS}][[:word:]#{HASHTAG_SEPARATORS}]*[[:word:]_])|([[:word:]_]*[[:alpha:]][[:word:]_]*)"
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HASHTAG_SEPARATORS = "_\u00B7\u30FB\u200c"
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HASHTAG_FIRST_SEQUENCE_CHUNK_ONE = "[[:word:]_][[:word:]#{HASHTAG_SEPARATORS}]*[[:alpha:]#{HASHTAG_SEPARATORS}]"
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HASHTAG_FIRST_SEQUENCE_CHUNK_TWO = "[[:word:]#{HASHTAG_SEPARATORS}]*[[:word:]_]"
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HASHTAG_FIRST_SEQUENCE = "(#{HASHTAG_FIRST_SEQUENCE_CHUNK_ONE}#{HASHTAG_FIRST_SEQUENCE_CHUNK_TWO})"
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HASTAG_LAST_SEQUENCE = '([[:word:]_]*[[:alpha:]][[:word:]_]*)'
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HASHTAG_NAME_PAT = "#{HASHTAG_FIRST_SEQUENCE}|#{HASTAG_LAST_SEQUENCE}"
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HASHTAG_RE = /(?:^|[^\/\)\w])#(#{HASHTAG_NAME_PAT})/i
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HASHTAG_NAME_RE = /\A(#{HASHTAG_NAME_PAT})\z/i
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@ -45,7 +49,11 @@ class Tag < ApplicationRecord
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scope :listable, -> { where(listable: [true, nil]) }
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scope :trendable, -> { Setting.trendable_by_default ? where(trendable: [true, nil]) : where(trendable: true) }
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scope :not_trendable, -> { where(trendable: false) }
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scope :recently_used, ->(account) { joins(:statuses).where(statuses: { id: account.statuses.select(:id).limit(1000) }).group(:id).order(Arel.sql('count(*) desc')) }
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scope :recently_used, ->(account) {
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joins(:statuses)
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.where(statuses: { id: account.statuses.select(:id).limit(1000) })
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.group(:id).order(Arel.sql('count(*) desc'))
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}
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scope :matches_name, ->(term) { where(arel_table[:name].lower.matches(arel_table.lower("#{sanitize_sql_like(Tag.normalize(term))}%"), nil, true)) } # Search with case-sensitive to use B-tree index
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update_index('tags', :self)
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@ -105,7 +113,8 @@ class Tag < ApplicationRecord
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names = Array(name_or_names).map { |str| [normalize(str), str] }.uniq(&:first)
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names.map do |(normalized_name, display_name)|
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tag = matching_name(normalized_name).first || create(name: normalized_name, display_name: display_name.gsub(HASHTAG_INVALID_CHARS_RE, ''))
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tag = matching_name(normalized_name).first || create(name: normalized_name,
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display_name: display_name.gsub(HASHTAG_INVALID_CHARS_RE, ''))
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yield tag if block_given?
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@ -154,6 +163,9 @@ class Tag < ApplicationRecord
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end
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def validate_display_name_change
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errors.add(:display_name, I18n.t('tags.does_not_match_previous_name')) unless HashtagNormalizer.new.normalize(display_name).casecmp(name.mb_chars).zero?
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unless HashtagNormalizer.new.normalize(display_name).casecmp(name.mb_chars).zero?
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errors.add(:display_name,
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I18n.t('tags.does_not_match_previous_name'))
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end
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end
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end
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@ -1,21 +1,22 @@
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# frozen_string_literal: true
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require 'rails_helper'
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RSpec.describe Tag, type: :model do
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RSpec.describe Tag do
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describe 'validations' do
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it 'invalid with #' do
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expect(Tag.new(name: '#hello_world')).to_not be_valid
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expect(described_class.new(name: '#hello_world')).not_to be_valid
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end
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it 'invalid with .' do
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expect(Tag.new(name: '.abcdef123')).to_not be_valid
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expect(described_class.new(name: '.abcdef123')).not_to be_valid
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end
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it 'invalid with spaces' do
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expect(Tag.new(name: 'hello world')).to_not be_valid
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expect(described_class.new(name: 'hello world')).not_to be_valid
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end
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it 'valid with aesthetic' do
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expect(Tag.new(name: 'aesthetic')).to be_valid
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expect(described_class.new(name: 'aesthetic')).to be_valid
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end
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end
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@ -62,6 +63,10 @@ RSpec.describe Tag, type: :model do
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expect(subject.match('hello #one·two·three').to_s).to eq ' #one·two·three'
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end
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it 'matches ・unicode in ぼっち・ざ・ろっく correctly' do
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expect(subject.match('testing #ぼっち・ざ・ろっく').to_s).to eq ' #ぼっち・ざ・ろっく'
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end
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it 'matches ZWNJ' do
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expect(subject.match('just add #نرمافزار and').to_s).to eq ' #نرمافزار'
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end
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@ -89,44 +94,46 @@ RSpec.describe Tag, type: :model do
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describe '.find_normalized' do
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it 'returns tag for a multibyte case-insensitive name' do
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upcase_string = 'abcABCabcABCやゆよ'
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downcase_string = 'abcabcabcabcやゆよ';
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downcase_string = 'abcabcabcabcやゆよ'
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tag = Fabricate(:tag, name: HashtagNormalizer.new.normalize(downcase_string))
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expect(Tag.find_normalized(upcase_string)).to eq tag
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expect(described_class.find_normalized(upcase_string)).to eq tag
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end
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end
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describe '.matches_name' do
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it 'returns tags for multibyte case-insensitive names' do
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upcase_string = 'abcABCabcABCやゆよ'
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downcase_string = 'abcabcabcabcやゆよ';
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downcase_string = 'abcabcabcabcやゆよ'
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tag = Fabricate(:tag, name: HashtagNormalizer.new.normalize(downcase_string))
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expect(Tag.matches_name(upcase_string)).to eq [tag]
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expect(described_class.matches_name(upcase_string)).to eq [tag]
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end
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it 'uses the LIKE operator' do
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expect(Tag.matches_name('100%abc').to_sql).to eq %q[SELECT "tags".* FROM "tags" WHERE LOWER("tags"."name") LIKE LOWER('100abc%')]
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result = %q[SELECT "tags".* FROM "tags" WHERE LOWER("tags"."name") LIKE LOWER('100abc%')]
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expect(described_class.matches_name('100%abc').to_sql).to eq result
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end
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end
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describe '.matching_name' do
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it 'returns tags for multibyte case-insensitive names' do
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upcase_string = 'abcABCabcABCやゆよ'
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downcase_string = 'abcabcabcabcやゆよ';
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downcase_string = 'abcabcabcabcやゆよ'
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tag = Fabricate(:tag, name: HashtagNormalizer.new.normalize(downcase_string))
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expect(Tag.matching_name(upcase_string)).to eq [tag]
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expect(described_class.matching_name(upcase_string)).to eq [tag]
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end
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end
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describe '.find_or_create_by_names' do
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it 'runs a passed block once per tag regardless of duplicates' do
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upcase_string = 'abcABCabcABCやゆよ'
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downcase_string = 'abcabcabcabcやゆよ';
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count = 0
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let(:upcase_string) { 'abcABCabcABCやゆよ' }
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let(:downcase_string) { 'abcabcabcabcやゆよ' }
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Tag.find_or_create_by_names([upcase_string, downcase_string]) do |tag|
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it 'runs a passed block once per tag regardless of duplicates' do
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count = 0
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described_class.find_or_create_by_names([upcase_string, downcase_string]) do |_tag|
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count += 1
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end
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@ -136,28 +143,28 @@ RSpec.describe Tag, type: :model do
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describe '.search_for' do
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it 'finds tag records with matching names' do
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tag = Fabricate(:tag, name: "match")
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_miss_tag = Fabricate(:tag, name: "miss")
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tag = Fabricate(:tag, name: 'match')
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_miss_tag = Fabricate(:tag, name: 'miss')
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results = Tag.search_for("match")
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results = described_class.search_for('match')
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expect(results).to eq [tag]
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end
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it 'finds tag records in case insensitive' do
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tag = Fabricate(:tag, name: "MATCH")
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_miss_tag = Fabricate(:tag, name: "miss")
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tag = Fabricate(:tag, name: 'MATCH')
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_miss_tag = Fabricate(:tag, name: 'miss')
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results = Tag.search_for("match")
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results = described_class.search_for('match')
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expect(results).to eq [tag]
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end
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it 'finds the exact matching tag as the first item' do
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similar_tag = Fabricate(:tag, name: "matchlater", reviewed_at: Time.now.utc)
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tag = Fabricate(:tag, name: "match", reviewed_at: Time.now.utc)
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similar_tag = Fabricate(:tag, name: 'matchlater', reviewed_at: Time.now.utc)
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tag = Fabricate(:tag, name: 'match', reviewed_at: Time.now.utc)
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results = Tag.search_for("match")
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results = described_class.search_for('match')
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expect(results).to eq [tag, similar_tag]
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end
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