What is the best way to validate a json object? (POST request)

rubyonrails-talk
1

I must create a class (JobClass) and include ActiveModel::Validations? and then valided = JobClass.new(params).valid?

The JSON body :

I can not create rules corresponding to the validation of the field "method" ... It can be "concat" or "split" but it is not the first level.

How can I do?

Thanks