mastodon/db/migrate/20171009222537_create_keyword_mutes.rb

class CreateKeywordMutes < ActiveRecord::Migration[5.1]
  def change
    create_table :keyword_mutes do |t|
      t.references :account, null: false
      t.string :keyword, null: false
      t.boolean :whole_word, null: false, default: true
      t.timestamps
    end

    add_foreign_key :keyword_mutes, :accounts, on_delete: :cascade
  end
end
Add KeywordMute model. Gist of the proposed keyword mute implementation: Keyword mutes are represented server-side as one keyword per record. For each account, there exists a keyword regex that is generated as one big alternation of all keywords. This regex is cached (in Redis, I guess) so we can quickly get it when filtering in FeedManager. 2017-10-09 22:28:28 +00:00			`class CreateKeywordMutes < ActiveRecord::Migration[5.1]`
			`def change`
			`create_table :keyword_mutes do \|t\|`
			`t.references :account, null: false`
			`t.string :keyword, null: false`
Allow keywords to match either substrings or whole words. Word-boundary matching only works as intended in English and languages that use similar word-breaking characters; it doesn't work so well in (say) Japanese, Chinese, or Thai. It's unacceptable to have a feature that doesn't work as intended for some languages. (Moreso especially considering that it's likely that the largest contingent on the Mastodon bit of the fediverse speaks Japanese.) There are rules specified in Unicode TR29[1] for word-breaking across all languages supported by Unicode, but the rules deliberately do not cover all cases. In fact, TR29 states For example, reliable detection of word boundaries in languages such as Thai, Lao, Chinese, or Japanese requires the use of dictionary lookup, analogous to English hyphenation. So we aren't going to be able to make word detection work with regexes within Mastodon (or glitchsoc). However, for a first pass (even if it's kind of punting) we can allow the user to choose whether they want word or substring detection and warn about the limitations of this implementation in, say, docs. [1]: https://unicode.org/reports/tr29/ https://web.archive.org/web/20171001005125/https://unicode.org/reports/tr29/ 2017-10-16 00:49:22 +00:00			`t.boolean :whole_word, null: false, default: true`
Add KeywordMute model. Gist of the proposed keyword mute implementation: Keyword mutes are represented server-side as one keyword per record. For each account, there exists a keyword regex that is generated as one big alternation of all keywords. This regex is cached (in Redis, I guess) so we can quickly get it when filtering in FeedManager. 2017-10-09 22:28:28 +00:00			`t.timestamps`
			`end`

			`add_foreign_key :keyword_mutes, :accounts, on_delete: :cascade`
			`end`
			`end`