Built-in validator suggestion

[alolis]

Hello!

I found myself using very often a custom validator I made in order to check all the elements in a vector if they are numeric in some cases or if they match a regex pattern in some other cases.

For example, the case where I mostly use it is when I wanna validate the a vector query parameter.

e.g www.example.com?items[]=1&items[]=2

And then inside my code i take the items and use my validator, which works just fine but i thought I could propose the implementation of a build-in vector-of validator which as options will take the currently available validators and check against them if all vector elements pass the validation.

[mylesmegyesi]

@alolis I have also written that custom validator before. I haven't put it in metis yet because of some questions around how the syntax would work. I was thinking along these lines.

; with one item validator
(defvalidator user-validator
  [:zipcodes :collection {:item-validator [:numericality {:equal-to 5 :only-integer true}]}])

; with many item validators
(defvalidator user-validator
  [:numbers :collection {:item-validator [:numericality {:less-than 5} :length {:equal-to 3} :some-custom-validator]}])

What do you think?

[alolis]

That's exactly how I implemented mine as well :) I think it's pretty straight forward and clean

[alolis]

Hey Myles, I was wondering if you have a fork with the collection feature somewhere; I wanted to have a look at it because it seems I use it more often lately :)

...or did it make it to core and I haven't noticed?

[mylesmegyesi]

Unfortunatley it was never added to metis. I built it into the project is was working on at the time.

[alolis]

Definitely a useful thing to have in metis :) If we get to vote about it it's +1 from me :p

Do you think you can share the function at least? I feel it's much more complete than what I got. If not, no problem at all.