Variables in REXML

[54Sandgroper]

Real nuby question.

This works fine...
irb> puts root.elements['foo/bar[3]'].text
three

I can't work out how to do this...
irb> i = 3
irb> puts root.elements['foo/bar'].text

I keep getting error message
NoMethodError: undefined method `text' for nil:NilClass

I've tried defining "i" every which way -- , [@i] and others.

irb> $i = 3
irb> [${i}]
doesn't error, but it outputs as if i = 1.

All of the REXML examples for text nodes that I have been able to track
down have the index hard coded, or use .each

Can someone point me in the right direction?

 

[Paul Battley]

SSB0aGluayB0aGlzIGlzIHRoZSBzdHJpbmcgaW50ZXJwb2xhdGlvbiB5b3UncmUgbG9va2luZyBm
b3I6CgogIHJvb3QuZWxlbWVudHNbImZvby9iYXJbI3tpfV0iXS50ZXh0CgpQYXVsLgo=

 

[Jerome Zago]

I can't work out how to do this...

irb> i =3D 3
irb> puts root.elements['foo/bar'].text

Please try:
puts root.elements["foo/bar[#{i}]"].text

 

[54Sandgroper]

I can't work out how to do this...
irb> i = 3
irb> puts root.elements['foo/bar'].text

Please try:
puts root.elements["foo/bar[#{i}]"].text

Aha! The double quotes did the trick.

I had unsucessfully tried
puts root.elements['foo/bar[#{i}]'].text

Thanks a million!