This document describes the login logic implemented in the Larafast API Boilerplate. The logic is primarily handled by the LoginController class.

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Login Request Validation

The first step in the login process is validating the incoming request data. This is done using the LoginRequest class, which extends Laravel’s FormRequest class. The rules method of this class specifies that both the email and password fields are required, and that the email field must be a valid email address.

class LoginRequest extends FormRequest
{
    public function rules(): array
    {
        return [
            'email' => ['required', 'string', 'email'],
            'password' => ['required', 'string'],
        ];
    }
}

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User Authentication

The store method in the LoginController class handles the actual authentication. It retrieves the user record with the provided email address, and then uses Laravel’s Hash facade to check if the provided password matches the hashed password stored in the database.

If the user record doesn’t exist, or if the password doesn’t match, a ValidationException is thrown with a message indicating that the authentication failed.

public function store(LoginRequest $request): JsonResponse
{
    $user = User::where('email', $request->get('email'))->first();

    if (! $user || ! Hash::check($request->get('password'), $user->password)) {
        throw ValidationException::withMessages([
            'email' => [__('auth.failed')],
        ]);
    }

    return response()->token($user);
}

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Token Generation

If the authentication is successful, a token is generated for the user. This is done using the token macro defined in the ResponseMacroServiceProvider class. The token is then returned in the response.

Response::macro('token', function ($user, $abilities = ['*']): JsonResponse {
    return Response::success(
        [
            'token' => $user->createToken(device(), $abilities)->plainTextToken,
            'user' => new UserResource($user),
        ],
    );
});

​
Logout

The destroy method in the LoginController class handles logout. It deletes the current access token for the authenticated user, and then returns a success message.

public function destroy(Request $request): JsonResponse
{
    $request->user()->currentAccessToken()->delete();

    return response()->successMessage('Successfully logged out');
}

​
Routes

The routes for login and logout are defined in the routes/auth.php file. Both routes use the LoginController class, and the store and destroy methods respectively.

Route::post('/login', [LoginController::class, 'store'])
    ->middleware('guest')
    ->name('login');

Route::post('/logout', [LoginController::class, 'destroy'])
    ->middleware('auth:sanctum')
    ->name('logout');

This concludes the overview of the login logic in the application.

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