34 lines
800 B
Ruby
34 lines
800 B
Ruby
# frozen_string_literal: true
|
|
|
|
class Tag < ApplicationRecord
|
|
has_and_belongs_to_many :statuses
|
|
|
|
HASHTAG_RE = /(?:^|[^\/\)\w])#([[:word:]_]*[[:alpha:]_][[:word:]_]*)/i
|
|
|
|
validates :name, presence: true, uniqueness: true
|
|
|
|
def to_param
|
|
name
|
|
end
|
|
|
|
class << self
|
|
def search_for(terms, limit = 5)
|
|
terms = Arel.sql(connection.quote(terms.gsub(/['?\\:]/, ' ')))
|
|
textsearch = 'to_tsvector(\'simple\', tags.name)'
|
|
query = 'to_tsquery(\'simple\', \'\'\' \' || ' + terms + ' || \' \'\'\' || \':*\')'
|
|
|
|
sql = <<SQL
|
|
SELECT
|
|
tags.*,
|
|
ts_rank_cd(#{textsearch}, #{query}) AS rank
|
|
FROM tags
|
|
WHERE #{query} @@ #{textsearch}
|
|
ORDER BY rank DESC
|
|
LIMIT ?
|
|
SQL
|
|
|
|
Tag.find_by_sql([sql, limit])
|
|
end
|
|
end
|
|
end
|