demarches-normaliennes/app/services/geojson_service.rb

class GeojsonService
  def self.to_json_polygon_for_qp coordinates
    polygon = {
        geo: {
            type: "Polygon",
            coordinates: [coordinates]
        }
    }

    polygon.to_json
  end

  def self.to_json_polygon_for_cadastre coordinates
    polygon = {
        geom: {
            type: "Feature",
            geometry: {
                type: "Polygon",
                coordinates: [
                    coordinates
                ]
            }
        }
    }

    polygon.to_json
  end
end