Validation not triggered when Inertia `transform` changes keys.

[ragulka]

Laravel Precognition Plugin Version

0.5.6

Laravel Version

10.41.1

Plugin

Vue w/ Inertia

Description

In #72, support for Inertia transform was added. However, it looks like it does not support renaming keys, or changing the data structure. In fact, it looks like it only supports transforming individual form field values.

If keys are renamed, or the data structure changes when transforming, then validation is not triggered.

I would expect that changing the data structure with transform is possible and fully supported.

Steps To Reproduce

Implement a form like this:

const form = useForm('patch', '/update', {
    document: {
        customer: { email: 'foo@bar.com' }
        /** other data here **/
    }
}).transform((data) => { ...data.document })

<input type="text" v-model="form.document.customer.email" @change="form.validate('customer.email')" />

Changing the email value will trigger validation all the way until this line:

precognition/packages/vue/src/index.ts

Lines 87 to 90 in 78d440b

	return originalInputs.reduce<Partial<Data>>((carry, name) => ({
	...carry,
	[name]: data[name],
	}), {}) as Data

It stops here, because the keys in originalInputs are based on the initial data, without applying the transformer on it.

[ragulka]

I think the issue might be that the originalnputs array serves 2 different purposes:

1. A stored list of original data keys, so it's easier to reset the form data
2. A list of keys which is used to remove the non-data form properties from the form when calling form.data()

The issue here is that originalInputs is never updated, not even when calling form.setData() with a completely different object than when initializing. However, since originalInputs is used to reset form data to initial state, this seems an expected behavior in that regard...

Perhaps it would make more sense to have a dedicated dataKeys array, which is updated whenever setData is called?

Also, I haven't tested yet wether precognition forms support Inertia's form.defaults()?

[timacdonald]

@ragulka, thanks for raising this. I had not considered keys changing when I implemented the transform feature.

I believe I have a solution to this that I am working on and should have ready shortly.

[timacdonald]

Opened a pull request with a failing test for this one: #92

Unfortunately, it is a tricky one to solve with how Precognition needs to work. Will keep hacking on it and see what we can come up with.