Getting a field value from database in relation manager

[haiffy420]

So I have this relation manager, each Babies has many Visits

In New Visit form, there is a number_of_visit field (basically indicating that the visit at this time is the X th visit)

Forms\Components\TextInput::make('kunjungan')
                     ->label('Number of visits')
                     ->default(function () {
                              return \App\Models\Visit::query()->where('baby_id', 1)->count() + 1; 
                     }),

Instead of using constant value 'baby_id' = 1, I want to display the number of visits for a specific baby dynamically based on the current baby's id (in this case baby named Aquila) so my question is how do i get the baby's id value for this relation manager.

I hope this isn't confusing. If it is, ignore everything above, this is the query that I'm trying to achieve, maybe it could help

SELECT COUNT(*) FROM `babies`, `visits` 
WHERE babies.id = 1 // replace 1 with id of the baby that I'm currently viewing, I don't know how to get the `id` and put it in relation manager's form
AND babies.id = visits.baby_id;

[leandrocfe]

Do you have a visits relationship?

TextInput::make('kunjungan')
    ->label('Number of visits')
    ->formatStateUsing(fn ($record): ?string => $record?->visits->count() ?? 0)
    ->disabled()

[haiffy420]

Sorry, it seems that my question was a little confusing, what i want is to access the record of the baby, the parent model of visit. Thank you for helping regardless.

[haiffy420]

Found the solution from this Laracasts post

use Livewire\Component as Livewire;

Forms\Components\TextInput::make('kunjungan')
          ->label('Number of visits')
          ->default(
              function () {
                    function (Livewire $livewire) {
                         $livewire->ownerRecord;
                    };
              return \App\Models\Visit::query()->where('baby_id', $this->ownerRecord->id)->count() + 1;
              }
          ),

[leandrocfe]

ahh ok, I hadn't got the idea.. A shorter way

Forms\Components\TextInput::make('kunjungan')
          ->label('Number of visits')
          ->default(fn ($livewire) => $livewire->ownerRecord->visits->count() + 1)

[haiffy420]

Nice!

[castorius31]

Anothers suggestions when it depends on the context (ownerRecord can not exist)

->default(function ($livewire) {
        if (isset($livewire->ownerRecord)) {
            return $livewire->ownerRecord->id;
        }
    }
)
->disabled(function ($livewire) {
    if (isset($livewire->ownerRecord)) {
        return true;
    }
    return false;
})
```