We have a template usability session at 9am this morning, and we'll be
covering these sort of utility functions as part of that session. If you
don't make it we can follow up later.
On 05/11/14 15:46, Lee, Alexis wrote:
I’m considering adding a function which takes a list and returns the first
non-null, non-empty value in that list.
So you could do EG:
some_thing:
config:
ControlVIP:
first_nonnull:
- {get_param: ControlVIP}
- {get_attr: [ControlVirtualIP, fixed_ips, 0, ip_address]}]}
I’m open to other names, EG “some”, “or”, “fallback_list” etc.
Steve Hardy suggested building this into get_attr or Fn::Select. My
feeling
is that those each do one job well right now, I’m happy to take a steer
though.
What do you think please?
Alexis (lxsli)
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