Filament•6d ago

Handling a Primary Item Outside the Repeater

I’m using Filament with a 1:N relationship represented by a repeater. Among these items, one must be marked as the “primary” item, which is stored in a specific column. Because of this, I’ve separated the primary item field from the repeater in the form. I renamed it in the make method, and before saving the other items in the repeater, I add this primary item first. However, Filament is interpreting the separated primary item field as another relationship, but I want it to be ignored by the relationship handling. I’ve tried using dehydrated, but it didn’t work. How can I ensure that Filament doesn’t treat this primary item field as part of a new relationship, and instead just handles it as a regular field to be saved before persisting the repeater’s items? This is a generic example:

Grid::make()
    ->columns(4)
    ->schema([
        Select::make('main_attachment_id')
            ->label('Main Attachment')
            ->options(Attachment::pluck('name', 'id'))
            ->dehydrated()
            ->required()
            ->columnSpan(2),
    ]),

TableRepeater::make('attachments')
    ->relationship('attachments')
    ->schema([
        TextInput::make('name')->required(),
        Hidden::make('is_main')->default(false),
    ])
    ->beforeStateDehydrated(function ($component, $get) {
        $state = $component->getState();
        $state[] = [
            'id' => $get('main_attachment_id'),
            'name' => Attachment::find($get('main_attachment_id'))?->name,
            'is_main' => true,
        ];
        $component->state($state);
    })
    ->afterStateHydrated(function ($component, $set) {
        $state = $component->getState();
        $filtered = [];

        foreach ($state as $item) {
            if (! empty($item['is_main'])) {
                $set('main_attachment_id', $item['id']);
            } else {
                $filtered[] = $item;
            }
        }

        $component->state($filtered);
    });

Grid::make()
    ->columns(4)
    ->schema([
        Select::make('main_attachment_id')
            ->label('Main Attachment')
            ->options(Attachment::pluck('name', 'id'))
            ->dehydrated()
            ->required()
            ->columnSpan(2),
    ]),

TableRepeater::make('attachments')
    ->relationship('attachments')
    ->schema([
        TextInput::make('name')->required(),
        Hidden::make('is_main')->default(false),
    ])
    ->beforeStateDehydrated(function ($component, $get) {
        $state = $component->getState();
        $state[] = [
            'id' => $get('main_attachment_id'),
            'name' => Attachment::find($get('main_attachment_id'))?->name,
            'is_main' => true,
        ];
        $component->state($state);
    })
    ->afterStateHydrated(function ($component, $set) {
        $state = $component->getState();
        $filtered = [];

        foreach ($state as $item) {
            if (! empty($item['is_main'])) {
                $set('main_attachment_id', $item['id']);
            } else {
                $filtered[] = $item;
            }
        }

        $component->state($filtered);
    });

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