Creating a resource inline does not populate the field in the FormData

[tom-m-clarity-growth]

Versions

• Laravel Version: 9.52.2
• Nova Version: 4.35.5
• PHP Version: 8.3.14
• Database Driver & Version: SQL 8.0.39
• Operating System and Version: Mac OS 15.3
• Browser type and version: Chrome Version 132.0.6834.160 (Official Build) (x86_64)

Description

When creating a new resource using inline creation, the newly created resource does not populate the field in the FormData object, used by the dependsOn method. I have a Number field that is conditionally revealed and it's minimum and maximum value is dependant on the newly created resource. To achieve this the show and rules are applied to the Number field using the dependsOn method. This works when a resource is selected from a relatableQuery result, as selecting this populates the FormData object, but the same behaviour is not observed from inline creation. How can I get the ID of the newly created resource when completing an inline creation?

Detailed steps to reproduce the issue on a fresh Nova installation

Creation

1. Create a model and respective nova resource called 'Item'.
2. Create a model and respective nova resource called 'Inventory'.
3. Create a 'belongs-to-many' relationship between the two (ensuring the pivot table is created and this is correct on both the models and nova resources).
4. On the Item nova resource create pivot field for Inventory using the Number field:

BelongsToMany::make('Inventories')
    ->searchable()
    ->showCreateRelationButton()
    ->fields(function ($request, $relatedModel) {
        return [
            Number::make('Quantity')
            ->hide()
            ->dependsOn(['items', 'inventories'], function (Number $field, NovaRequest $request, FormData $formData) {
                // Log::debug(print_r($request, 1)); // This may cause a memory exhaustion so don't include it when loading the pages
                Log::debug(print_r($formData, 1)); // this should show what values are in the form
                if (($formData["resource:items"] && $formData["resource:inventories"]) ||
                    ($formData["resource:items"] && $formData->inventories) ||
                    ($formData->items && $formData["resource:inventories"]) ||
                    ($formData->items && $formData->inventories)) {
                    $field->show();
                }
            }),
        ];
    }),

Method

1. Create an Inventory inline using the Create Relation Button.

Issue

If simply searching and selecting an existing resource, the Quantity field shows as expected. You will notice that the pivot field does not show if creating a resource inline. However if you then select the field and reselect the newly created resource, it will show.

[crynobone]

Hi there, I will look into this. However, note that any bug fixes will only go to Nova 5 releases.

[crynobone]

Moving to Ideas, Many-to-Many fields don't implement the Dependent Field traits and mixin and are currently under unsupported fields.

[tom-m-clarity-growth]

Are there any plans to implement the Dependent Field traits and mixin for the BelongsToMany field?

With more support available in Nova 5 for the Repeater field, would this field also be extended to support a many to many relationship in the future too?