v-once directive in render function (Failed to resolve directive)

[solovev]

Version

2.2.6

Reproduction link

https://jsfiddle.net/spritedev/ty2co130/1/

Steps to reproduce

1. Open jsfiddle link
2. Type something in input
3. See warnings in console (Failed to resolve directive: once)

What is expected?

I wrote two equals components, first component has template field, second - render function. I was expected that v-once will work in render function properly (like in templates)

What is actually happening?

Got warning message in browser console:

[Vue warn]: Failed to resolve directive: once

[yyx990803]

v-once, like v-if and v-for, are compile-level directives and therefore not available inside render fns.

[rodrigoho]

Hi, I came up with the same issue, I was trying to use v-if inside a render, is it still not possible to use it?

[posva]

No, you use a ternary instead (like you would in JSX)
I'm locking this since it's a very old issue :)

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