Yasnippet increment function name

Question

I have a small snippet like this:

# -*- mode: snippet -*-
# name: options
# key: vop
# --
var options = {
    target:        '#$1',
    beforeSubmit:  showRequest,
    success:       showResponse
}$0

What I would like to do is to increment function name for each insertion. Like this:

var options1 = {
  target:        '#',
  beforeSubmit:  showRequest,
  success:       showResponse
}

var options2 = {
  target:        '#',
  beforeSubmit:  showRequest,
  success:       showResponse
}

etc... Is there a way to achieve this?

Answer 1

Yes, in yasnippet you can use elisp code, so it's easy:

# -*- mode: snippet -*-
# name: options
# key: vop
# --
var options`(if (boundp 'vop-count) (setq vop-count (1+ vop-count)) (setq vop-count 1) ) (vop-count)` = {
    target:        '#$1',
    beforeSubmit:  showRequest,
    success:       showResponse
}$0

If you wanna reset the counter, run (setq vop-count 0)