Re: [yang-doctors] Checking for parent path in grouping

[Martin Bjorklund <[e-mail]>]

"Acee Lindem (acee)" <[e-mail]> wrote:
> Is there a way to check for particular parent path so that a container
> or leaf in a grouping would be present ONLY when it is “used” from a
> particular path? For example:
> 
> grouping foo {
>   container foo {
>     container red {
>          when “../../red-parent”;
>     }
>     container blue {
>           when “../../blue-parent”;
>      }
>    }
> }
> 
> 
> container red-parent {
>   uses foo;
> }
>  container blue-parent {
>    uses foo;
> }
> 
> It compiled fine using pyang but the check didn’t exclude the
> container with the non-matching parent from the path in the formatted
> tree (pyang -f tree output).

As you noted it works, but since the "when" expressions are evaluated
at runtime, you'll see both "red" and "blue" in both parents in the
tree output - they are present in the schema, but their when
expressions will always be false.


/martin