Setting aspect ratio for image validation in Sanity.io

How can i set aspect ratio for image as validation ?

https://www.sanity.io/docs/validation#091e10f957aa instead of geoPoint here just change the variable to

image

what this returns is a

_ref

the value of the ref is the image + dimensions + file type as one string. break the string at the

-

using

split

then find the index where the image dimensions are returned. parse the image dimensions to find the aspect ration

w / h

.

strike that. there is actually undocumented api to get the image dimensions from the ref in the validation:

const {width, height} = getImageDimensions(image.asset._ref)

comes from

import { getExtension, getImageDimensions } from '@sanity/asset-utils'

but according to the source its doing exactly the same thing I said in my first response so you do you.

Rule.required().custom(image =>{
const arr = image.asset._ref.split("-");
let dimension=arr[2];
const res=dimension.split('x');
let width=res[0]
let height=res[1];

const aspectRatio = width / height;
if (aspectRatio===1/1) {
return
} else {
return "The aspect ratio is not 1:1";
}
})
I did like this it worked thank you for the guidance .