On Thu, Dec 20, 2018, at 1:17 AM, Karl Auer wrote:
> Is there anything like the "default(omit)" filter available for ordinary
> variable declarations?
>
> I am building a list of volume details, which will be passed too the ec2
> module. With module parameters, one can comvert an undefined parameter inot
> no parameter at all with the "default(omit)" filter, but I cn't find a way
> to simply leave out an undefined item from the list I m building.
>
> Say my input is a list of tables like this:
>
> alist:
> - { 'fred': value1, 'mary': value2 }
> - { 'fred: value3 }
>
> I want to process that list into another list using set_fact, so:
>
> - set_fact:
> mylist: "{{ mylist + [ {'this': item.fred, 'that': item.mary } ] }}"
> with_items: "{{ alist }}"
>
Try
- set_fact:
mylist: "{{ mylist + [ {'this': item.fred } | combine(item.mary is defined
| ternary({ 'that': item.mary }, {})] }}"
with_items: "{{ alist }}"
> ... and end up with
>
> { 'this': value1, 'that': value2}
> { 'this': value3 }
>
> But I can't figure out how to omit item.mary if it is undefined.
>
> Any clues?
>
> Regards, K.
>
> --
> Karl Auer
>
> Email : [email protected]
> Website: http://2pisoftware.com
>
> GPG/PGP : 958A 2647 6C44 D376 3D63 86A5 FFB2 20BC 0257 5816
> Previous: F0AB 6C70 A49D 1927 6E05 81E7 AD95 268F 2AB6 40EA
>
> --
> You received this message because you are subscribed to the Google
> Groups "Ansible Project" group.
> To unsubscribe from this group and stop receiving emails from it, send
> an email to [email protected].
> To post to this group, send email to [email protected].
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/ansible-project/CA%2B%2BT08Q7kOqLoVar0J1n8tpgm%2BovauRw17m7ONhwdJgeMKvh9g%40mail.gmail.com.
> For more options, visit https://groups.google.com/d/optout.
--
You received this message because you are subscribed to the Google Groups
"Ansible Project" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/ansible-project/1545366130.2300653.1615147544.549E96CE%40webmail.messagingengine.com.
For more options, visit https://groups.google.com/d/optout.
