I want the mysql2rgeo adapter to expose a pure Arel expression method st distance sphere(rhs, units = nil) …

I want the mysql2rgeo adapter to expose a pure Arel expression method st distance sphere(rhs, units = nil) …: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). Calling Place.arel table :lonlat .st distance sphere("SRID=4326;POINT(-72.099 42.099)") should return an…