AR::Relation#where_values_hash doesn't include date ranges

[melvinram]

Here's how to replicate problem:

$ rails new Cars
$ rails g scaffold Car manufacture_date:date make:string model:string
$ rake db:migrate
$ rails c
> Car.where(:manufacture_date => Date.today).where_values_hash  
=> {:manufacture_date=>Sun, 08 Jan 2012}
> Car.where(:manufacture_date => (Date.yesterday..Date.today)).where_values_hash
=> {}

[josevalim]

where_values_hash is internal API, you shouldn't be using with it.

[melvinram]

It's in the documentation. There is no indication that it's an internal API. Where do I go to see what should and shouldn't be using? And why shouldn't I be using this method when it does exactly what I need except for one bug?

[chewi]

Just ran into this myself. It's a public documented method so yeah. It's not like it returns Arel nodes or something else that's arguably internal.