st_buffer usage of to_f causes error when building the query with Arel: Unsupported argument type: Float. Construct an Arel node instead

[Buk1m]

Issue description

Error caused by the distance.to_f within the RGeo::ActiveRecord::SpatialExpressions.st_buffer function

spatial_expressions.rb#L125

Reproduction

With ActiveRecord 7+ prepare a query using Arel with st_buffer(100) and call to_sql on it.

Error

Unsupported argument type: Float. Construct an Arel node instead.

Context

https://github.com/rails/rails/blob/v7.0.8.5/activerecord/lib/arel/visitors/to_sql.rb#L770

Solution?

As there is no visitor for the Float type it should expect that the consumer will provide proper Arel.sql node as an argument instead of a number.
Either remove the to_f or rewrap it into Arel.sql (could hide errors when invalid value was provided).

Environment:

gems/rgeo-3.0.1
gems/rgeo-activerecord-7.0.1
gems/activerecord-7.0.8.5
gems/rails-7.0.8.5
ruby 3.1.1p18 (2022-02-18 revision 53f5fc4236) [arm64-darwin22]

[Buk1m]

Similar issue with the units.to_s on the next line

either it should expected an Arel::Nodes::SqlLiteral without calling the to_s
or the spatial_flags should be [true, true, true] as this is the only path that supports visiting String.

Am I using an incorrect version of the library? I would assume such issues would be quickly reported/discovered.