geocoded_by :address, :latitude, :longitude before_validation :geocode def address "福岡市中央区天神" end 上記の設定で@store.valid?や@store.saveなどを呼ぶと、latitudeとlongitudeにaddressの緯度と経度が入ります。 緯度経度に別のカラム名を使いたい場合 latとlngを持つstoreを例に説明を進めます。 bundle exec rails g model store lat:float lng:float
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