Undefined array key "name_of_firm" in laravel?

Question

This is my RegisterController (Laravel ui edited). please help me. Is i have to add any other page to this question.

protected function validator(array $data)
{
    return Validator::make($data, [
        'name' => ['required', 'string', 'max:255'],
        'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
        'password' => ['required', 'string', 'min:8', 'confirmed'],
    ]);
}

/**
 * Create a new user instance after a valid registration.
 *
 * @param  array  $data
 * @return \App\Models\User
 */
protected function create(array $data)
{
    return User::create([
        'name' => $data['name'],
        'email' => $data['email'],
        'password' => Hash::make($data['password']),
        'name_of_firm' => $data['name_of_firm'],
        'number' => $data['number'],
        'address' => $data['address'],
    ]);
}

Answer 1

There is 2 case if name_of_firm is nullable or required

Case : 1

if name_of_firm is required

protected function validator(array $data)
{
    return Validator::make($data, [
        'name' => ['required', 'string', 'max:255'],
        'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
        'password' => ['required', 'string', 'min:8', 'confirmed'],
        'name_of_firm' => ['required']
    ]);
}


/**
 * Create a new user instance after a valid registration.
 *
 * @param  array  $data
 * @return \App\Models\User
 */
protected function create(array $data)
{
    return User::create([
        'name' => $data['name'],
        'email' => $data['email'],
        'password' => Hash::make($data['password']),
        'name_of_firm' => $data['name_of_firm'],
        'number' => $data['number'],
        'address' => $data['address'],
    ]);
}

Case : 2

if name_of_firm is nullable

protected function validator(array $data)
{
    return Validator::make($data, [
        'name' => ['required', 'string', 'max:255'],
        'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
        'password' => ['required', 'string', 'min:8', 'confirmed'],
    ]);
}


/**
 * Create a new user instance after a valid registration.
 *
 * @param  array  $data
 * @return \App\Models\User
 */
protected function create(array $data)
{
    return User::create([
        'name' => $data['name'],
        'email' => $data['email'],
        'password' => Hash::make($data['password']),
        'name_of_firm' => $data['name_of_firm'] ?? null, // make sure database is accept null value
        'number' => $data['number'],
        'address' => $data['address'],
    ]);
}