Render (:action => 'xyz') in a private controller method

All,

I have a controller method (A) which gets called and then delegates some
validation to a private validation method (B). This method in turn
attempts to call

render(:action => ‘xyz’)

in order to pass control back to the view upon an exception condition.

However, it simply completes the method B and returns control to A.

So, I take it that render only works inside of a controller method that
is directly invoked based on a HTTP request?

I guess I can throw exceptions in my private method (B) up to my public
controller method (A) and then handle them there?

Is that the preferred way to handle this?

Thanks,
Wes

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