Filament: Select Dropdown Search with Custom Logic

You can customize the Select dropdown to search for any custom logic you want with the ->getSearchResultsUsing() method.

This example shows how to search for a Customer by email/phone/name after whatever the user is typing in the Select search box.

Forms\Components\Select::make('user_id')
    ->label('Customer')
    ->getSearchResultsUsing(function (string $search): array {
        return User::query()
            ->where(function (Builder $builder) use ($search) {
                $searchString = "%$search%";
                $builder->where('name', 'like', $searchString)
                    ->orWhere('email', 'like', $searchString)
                    ->orWhere('phone', 'like', $searchString);
            })
            ->where('role_id', Role::CUSTOMER)
            ->limit(50)
            ->get()
            ->mapWithKeys(function (User $customer) {
                return [$customer->id => $customer->name];
            })
            ->toArray();
    })