too lazy for blogging

Directly access an object if it's present

rubyquicktips:

If you want to access an object only if it’s present, you can use Rails’ Object#presence.
The API docs on presence have a good explanation:

This is handy for any representation of objects where blank is the same as not present at all. For example, this simplifies a common check for HTTP…

Source: rubyquicktips