Question

The app returns the number of records based on a variable name in my route. So if I have a “Person” model and a “Car” model (or any number of other ones), I want to be able to assign any of these to a variable and get results from it.

I’ve tried:

@model = params[:model]
@model.find(:all).count 

and I get the error:

undefined method `find' for "Person":String

Thanks for any help!

Answer 1

Try this:

@model = params[:model].constantize
@model.find(:all).count

Constantize turns a string in to a constant.