topnotch_website/app/Filament/Resources/CustomerResource/RelationManagers/ContactsRelationManager.php

<?php

namespace App\Filament\Resources\CustomerResource\RelationManagers;

use Filament\Forms\Components\TextInput;
use Filament\Forms\Form;
use Filament\Resources\RelationManagers\RelationManager;
use Filament\Tables;
use Filament\Tables\Columns\TextColumn;
use Filament\Tables\Table;

class ContactsRelationManager extends RelationManager
{
    protected static string $relationship = 'contacts';

    public function form(Form $form): Form
    {
        return $form
            ->schema([
                TextInput::make('first_name'),
                TextInput::make('last_name'),
                TextInput::make('email')
                    ->email(),
                TextInput::make('phone'),
                TextInput::make('notes'),
            ]);
    }

    public function table(Table $table): Table
    {
        return $table
            ->recordTitleAttribute('id')
            ->columns([
                TextColumn::make('full_name'),
                TextColumn::make('email'),
                TextColumn::make('phone'),
                TextColumn::make('notes')
                    ->extraHeaderAttributes(['class' => 'w-full']),
            ])
            ->filters([
                //
            ])
            ->headerActions([
                Tables\Actions\CreateAction::make(),
            ])
            ->actions([
                Tables\Actions\EditAction::make(),
                Tables\Actions\DeleteAction::make(),
            ])
            ->bulkActions([
                //                Tables\Actions\BulkActionGroup::make([
                //                    Tables\Actions\DeleteBulkAction::make(),
                //                ]),
            ]);
    }
}