Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Ruby Building Web Apps with Sinatra Finishing Touches Deleting Pages

params[:title] vs params["title"]

Can you explain why sometimes you use params[:title] vs params["title]?

2 Answers

Jay McGavren
STAFF
Jay McGavren
Treehouse Teacher

Lai Yi Ohlsen In Sinatra, it doesn't matter whether you use a symbol or a string to access the params object. params converts any symbol you pass as a key to a string before it looks up the corresponding value.

Don't try this with an ordinary Ruby Hash, though! In that case, :foo and "foo" will be two different keys, with two different values!

my_hash = {:foo => 1, "foo" => 2}
puts my_hash[:foo]
puts my_hash["foo"]

Output:

1
2

I find this I very thorough post that seems excellent to read :)