Rails curl syntax

Question

I can run the following command from my rails app:

Hash.from_xml(%x{curl -d \"admin=true\" http://localhost:8888} ) rescue nil

now I want t

Answer 1

x = %Q{"admin=true"}
Hash.from_xml(%x{curl -d "#{x}" http://localhost:8888} ) rescue nil

The %Q{}syntax indicates a quoted string, which is kind of like a "super"/"enhanced" version of a double-quoted string.

The #{} syntax inside %x{} is called interpolation and it allows to evaluate Ruby code inside a string.