I've been searching with not much luck for this... I have the code
url = params[:url]; if url == "" @myString = "No URL specified, cannot continue" else =begin DO SOME STUFFS.... =end end But the DO SOME STUFFS is still getting called. I have my index page which I perform actions on the _GET variables. I'd like to load the index page without the parameters in the URL. How do I check if they are set - if they're not, then display a message. If they are, process the requests...
Thanks!
Try this:
url = params[:url]; if params[:url].nil? @myString = "No URL specified, cannot continue" else DO SOME STUFFS.... end When params[:url] is empty it's equal to nil, not "".
use if url.blank?
blank? checks for nil and empty string and if you are not passing the url then accessing params[:url] would return nil. That is why your condition is failing.
rails 5:
@myString = "No URL specified, cannot continue" unless params[:url] Short and simple
url = params[:url] if url # do stuff else @my_string = "No URL specified, cannot continue" end params[:url] will be nil if not provided. nil evaluates false in a conditional.
if url.blank? here.
if url = params[:url] would remove the awkward line at the top