Feedback about form-validation

[sterling-e]

In the first code example for phx_change.exs, at the end of the validate_product event handler you forgot to reassign 'form' to the socket.
It currently looks like this:

    form = to_form(product_params, as: :product, errors: errors)
    {:noreply, socket}

instead of this:

    form = to_form(product_params, as: :product, errors: errors)
    {:noreply, assign(socket, form: form)}