class DbHelper REMAP_SQL ||= <<~SQL SELECT table_name, column_name FROM information_schema.columns WHERE table_schema = 'public' AND is_updatable = 'YES' AND (data_type LIKE 'char%' OR data_type LIKE 'text%') ORDER BY table_name, column_name SQL def self.remap(from, to, anchor_left: false, anchor_right: false, excluded_tables: []) like = "#{anchor_left ? '' : "%"}#{from}#{anchor_right ? '' : "%"}" text_columns = Hash.new { |h, k| h[k] = [] } DB.query(REMAP_SQL).each do |r| text_columns[r.table_name] << r.column_name end text_columns.each do |table, columns| next if excluded_tables.include?(table) set = columns.map do |column| "#{column} = REPLACE(#{column}, :from, :to)" end.join(", ") where = columns.map do |column| "#{column} IS NOT NULL AND #{column} LIKE :like" end.join(" OR ") DB.exec(<<~SQL, from: from, to: to, like: like) UPDATE #{table} SET #{set} WHERE #{where} SQL end SiteSetting.refresh! end def self.regexp_replace(pattern, replacement, flags: "gi", match: "~*", excluded_tables: []) text_columns = Hash.new { |h, k| h[k] = [] } DB.query(REMAP_SQL).each do |r| text_columns[r.table_name] << r.column_name end text_columns.each do |table, columns| next if excluded_tables.include?(table) set = columns.map do |column| "#{column} = REGEXP_REPLACE(#{column}, :pattern, :replacement, :flags)" end.join(", ") where = columns.map do |column| "#{column} IS NOT NULL AND #{column} #{match} :pattern" end.join(" OR ") puts pattern, replacement, flags, match DB.exec(<<~SQL, pattern: pattern, replacement: replacement, flags: flags, match: match) UPDATE #{table} SET #{set} WHERE #{where} SQL end SiteSetting.refresh! end def self.find(needle, anchor_left: false, anchor_right: false, excluded_tables: []) found = {} like = "#{anchor_left ? '' : "%"}#{needle}#{anchor_right ? '' : "%"}" DB.query(REMAP_SQL).each do |r| next if excluded_tables.include?(r.table_name) rows = DB.query(<<~SQL, like: like) SELECT #{r.column_name} FROM #{r.table_name} WHERE #{r.column_name} LIKE :like SQL if rows.size > 0 found["#{r.table_name}.#{r.column_name}"] = rows.map { |row| row.send(r.column_name) } end end found end end