Umbraco-cms: V8: Ability to add a custom validation feedback

[nielslyngsoe]

I would like to be able to write a custom validation feedback message. To help content creators move forward in this scenario:

I think it's fine to just provide one formulation of the feedback-message, written in the language the developer decides.

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_This item has been added to our backlog AB#3606_

[AndyButland]

I had this PR open for a while that was intended for this same issue. It's closed now, as was targeting V7, and haven't re-done as it didn't get much response previously - but could look to recreate if it looks to do what you are looking for here and it was felt it would get more traction now.

[nielslyngsoe]

Hi @AndyButland, I'm sorry that you have been given the feeling of this feature not begin relevant. I personally think this feature is super important. Super important to help provide a friendly validation.

From my point of view it was though only important to enable the possibility to write a custom 'validationRegExpMessage'. But since you'r PR also was able to set a custom 'mandatoryMessage' I would like to be enlighten with the case for this possibility? Can I ask you to elaborate, maybe share the scenario that you want to accomplish?

And just to be clear, the 'validationRegExpMessage' is a must have in my opinion, so please feel free to make a new PR with it. I will make sure to let @nul800sebastiaan know that we would like this, so it can be approved and merged when ready.

Thanks

[AndyButland]

No problem, it was speculative at the time I believe, but when I saw you'd posted an issue that looked to be the same it was looking to solve, it seemed relevant to note. I'll have a look at resurrecting for V8, or if anyone else wants to, there might be some work in there that can be reused.

[AndyButland]

New PR targeting V8 is here.

[nul800sebastiaan]

Thanks @AndyButland - as @nielslyngsoe already mentioned, I'm also trying to figure out the use-case for adding a custom mandatoryMessage, can you elaborate on that one please? 🙂

[AndyButland]

Just seemed "friendlier" I thought - so rather than just saying "Required" under a field, you could have "Please enter a title for the article" or similar.

In the same way that with an MVC application you'd likely use the attributes with a custom message: [Required(ErrorMessage = "Title is required.")].