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Reorder Array of Singleton References - Custom Validation Function

6 replies
Last updated: Sep 10, 2021
Hey all, I have an array of references to some singletons. This array will be used to generate the order of links in a navbar. I'd like to be able to reorder the array in Studio to determine navbar order, but prevent users from adding or removing any items from the array. Is this possible?
Sep 10, 2021, 9:54 PM
I was going to suggest validation with a min and max (
validation: Rule => Rule.min(3).max(3).required(),
, for example), but that would still permit someone to delete an item and add a different one to satisfy the validation rule and publish.
Is it critical that they can re-order the items?
Sep 10, 2021, 10:01 PM
Yeah, reordering is critical. For example, I have singleton documents for About, Products, Services, and Portfolio, that I'd like to query and render in a nav bar in Gatsby. I don't want users to be able to add or remove any of these items from the nav bar, but I do want an easier way of reordering them in the Studio instead of hard coding order in Gatsby.
Sep 10, 2021, 10:09 PM
Deleting array items seems to be impossible* when the validation above is combined with
liveEdit: true
(docs ). I’m not sure if that’s feasible in your case. Another possibility might be using webhooks to reinstate the array if an item is added/removed, but I’m not totally sure that’ll work.
* Through the studio. This all assumes no users are using the CLI/API.
Sep 10, 2021, 10:11 PM
Deleting array items seems to be impossible when the validation above is combined with
liveEdit: true
(docs ). I’m not sure if that’s feasible in your case. Another possibility might be using webhooks to reinstate the array if an item is added/removed, but I’m not totally sure that’ll work.
Sep 10, 2021, 10:11 PM
I think you could do a custom validation function that checks the array for the presence of each item. It would still be a hard coded list, but order would be flexible.
Sep 10, 2021, 10:23 PM
^ Great point. For a not-often-changing array, this should work well. The downside is that it imposes a dependency on a developer when the list items need to change.
Sep 10, 2021, 10:29 PM

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