Cli: q: How to implement something like an OptionFlag?

Created on 19 Jun 2020 · 9Comments · Source: urfave/cli

How to implement something like an OptionFlag

I'm looking to implement a Flag which can have a few predefined values.

E.g.

mycli --output json
mycli --output xml

Is there a way to implement this using the existing flags while also informing the user of the cli what are the available options?

If not would it make sense to add this OptionFlag? I would be happy to make a PR for that with some guidance.

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Source

marcofranssen

👍2

All 9 comments

To rephrase the question - are if asking if there's a builtin way to implement a flag that gives users a set of choices from a predefined list? Something like Choices: []string{'json', 'xml'}?

lynncyrin on 2 Jul 2020

@lynncyrin yes that is exactly what I meant.

marcofranssen on 2 Jul 2020

👍1

Makes sense! There's no obvious builtin way to implement this, but I've implemented a few "manual" versions of it. I don't happen to have that code on-hand, though.

lynncyrin on 2 Jul 2020

👀1

@lynncyrin would be great if you could dig it up and share a snippet here with the community. I'm happy to take that snippet of your further to integrate it here.

marcofranssen on 3 Jul 2020

👍1

Ping @lynncyrin

MarvinJWendt on 24 Aug 2020

This was previously requested in #620

nielsvaneck on 17 Sep 2020

This issue or PR has been automatically marked as stale because it has not had recent activity. Please add a comment bumping this if you're still interested in it's resolution! Thanks for your help, please let us know if you need anything else.