Rails gives me an error when I test for a blank param like this:
If I have params[:post][:id], things are fine. But if I have
params[:event][:id] instead, I get this error:
And a third solution yet
if defined? params[:post][:id]
It will not always work if you use it from a view (because of how local variables are handled), but for Models, Controllers and the sort it should be fine.