php - Unable to get, insert data from Database with codeigniter 4

I am trying the new codeigniter 4 Trying to create first app following tutorial https://codeigniter.com/user_guide/tutorial/news_section.html

My controller method to insert data

public function create()
{
    $model = new NewsModel();

    if (! $this->validate([
        'title' => 'required|min_length[3]|max_length[255]',
        'body'  => 'required'
    ])) {
        echo view('templates/header', ['title' => 'Create a news item']);
        echo view('news/create');
        echo view('templates/footer');
    } else {
        $model->save([
            'title' => $this->request->getVar('title'),
            'slug'  => url_title($this->request->getVar('title'), '-', true),
            'body'  => $this->request->getVar('body'),
        ]);

        echo view('news/success');
    }
}

It is echoing success page but data not inserting into database.

In .env file I used

 database.default.hostname = localhost
 database.default.database = news_db
 database.default.username = root
 database.default.password =
 database.default.DBDriver = MySQLi

I think db connection working as checked with wrong database details its not working

My model is

<?php namespace App\Models;

use CodeIgniter\Model;

class NewsModel extends Model
{
    protected $table = 'news';

    protected $allowedFields = ['title', 'slug', 'body'];

    public function getNews($slug = false)
    {

        if ($slug === false) {
            return $this->findAll();

        }

        return $this->asArray()
            ->where(['slug' => $slug])
            ->first();
    }
}

Solution:

The error is most likely coming from your Model declaration in the Controller.

$model = new NewsModel();

It should be namespaced.

Try:

$model = new \App\Models\NewsModel();

or

$model = model('NewsModel');

Solution:

I am suggesting that: if you haven't you should follow the tutorial strictly by extending the core controller because you did not show that in your code.

use CodeIgniter\Controller;

class News extends Controller

And You didnt use App\Models\NewsModel; Before instantiating your Model class. You can only do that in the way Ali-coder illustrate. Again still suggesting you should have use

$request->getPost() Instead of $this->request->getVar('title') I am suggesting all this because that is how i wrote mine and it work fine.