Question

I am trying to grab the Class object in a call I’m making, but the only place that I can find it is in params[:controller]. But this returns a string.

Can I find a Class object with just a string?

Answer 1

There’s a classify method that you can use to convert the string to an appropriately named constant, which in combination with const_get should be what you need. Here a simplified example, I don’t have a Rails console available at the moment:

ObjectSpace.const_get(“array”.capitalize).new #=> []

In Rails something like

"array".classify.constantize.new

should also work.