API login from android app using laravel 5.3 passport - laravel

Question

For two days I am digging google but could not find the starting thread for my problem, now I am out of option. Please help me with some direction/howTo
I have a web application running built with laravel 5.3, I have installed passport as described here . if I go /home its showing perfectly.
Now I have to make an android app from which
An already existing user of web app can login
get all the task list of that user TaskModel (ons_tasks(id, title, description))
routes related only
in web.php
Auth::routes();
in api.php
Route::get('/user', function (Request $request) {
return $request->user();
})->middleware('auth:api');
Route::group(['middleware' => ['auth:api']], function () {
Route::get('/test', function (Request $request) {
return response()->json(['name' => 'test']);
});
Route::get('/task/list', function (Request $request) {
$list = \App\Model\TaskModel::all();
return response()->json($list);
});
});
To login : if I send post request /login with email & password get the TokenMismatchException error but Where do I obtain a token for
android app in mobile? Do I need the Auth::routes() in the api too?
if then what else Do I need to just login and get a token so later I
can send it for getting the task lists.
Secondly,
If I go to /api/test it redirects me to /home page without
showing any error !!!
Thanks in advance.

Answer 1

To authenticate with your Passport-enabled API
You'll need to use the Password Grant Client in this situation, see this section of Passport's documentation.
Once you've generated a Password Grant Client, using:
php artisan passport:client --password
You will need to request an access token from your application, and send it with your subsequent requests, in order to access the protected auth:api middleware routes.
To get an access token, send a request to your app's /oauth/token route (this is a PHP implementation obviously, ensure you are correctly formatting below request in your Java implementation):
$http = new GuzzleHttp\Client;
$response = $http->post('http://your-app.com/oauth/token', [
'form_params' => [
'grant_type' => 'password',
'client_id' => '<client id returned from the artisan command above>',
' client_secret' => '<secret returned from artisan command above>',
'username' => 'taylor#laravel.com',
'password' => 'my-password',
'scope' => '',
],
]);
return json_decode((string) $response->getBody(), true);
Ensure you add the client_secret and client_id that was returned from the artisan call above, and ensure username and password references a valid user in your database.
If everything is fine here, you should receive an access_token and refresh_token in the response. The access_token is what you need to authenticate using the auth:api guard. To correctly pass this back to your api, you will need to send your subsequent requests with the headers Authorization: Bearer <your accessToken> and Accept: application/json
For example, to access your "test" route:
$response = $client->request('GET', '/api/test', [
'headers' => [
'Accept' => 'application/json',
'Authorization' => 'Bearer '. <accessToken from /oauth/token call>,
],
]);
If you've set these correctly, you should see a JSON response with the array you have specified.
Why is /api/test redirecting me with no error?
You are requesting a route with the auth:api middleware. This will redirect you as you have not specified the correct headers as described above, this is expected behavior.
Hope this helps.