ruby - Is there a Rails equivalent to PHP's isset()?

Question

Basically just a check to make sure a url param was set. How I'd do it in PHP:

if(isset($_POST['foo']) && isset($_POST['bar'])){}

Is this the rough/best equivalent to isset() in RoR?

if(!params['foo'].nil? && !params['bar'].nil?) end

question from:https://stackoverflow.com/questions/5035864/is-there-a-rails-equivalent-to-phps-isset

Answer 1

The closer match is probably #present?

# returns true if not nil and not blank
params['foo'].present?

There are also a few other methods

# returns true if nil
params['foo'].nil?

# returns true if nil or empty
params['foo'].blank?