Object of class app\models\Users could not be converted to string in yii
<p>I created a two models: 
Login.php and Users.php</p>

<p>Where the Users.php I will get the data from the Users table.</p>

<p>Then, I have created a LoginController.php which is my controller</p>

<p>Then I ran my app I had received this error:
Object of class app\models\Users could not be converted to string</p>

<p>These are my codes:</p>

<p>Login.php:</p>

<pre><code>    &lt;code&gt;`&lt;?php

namespace app\models;

use Yii;

/**
 * This is the model class for table "users".
 *
 * @property string $user_id
 * @property string $first_name
 * @property string $last_name
 * @property string $position
 * @property string $username
 * @property string $password
 * @property string $dept_id
 */
class Login extends \yii\db\ActiveRecord
{
    public $post;
    /**
     * @inheritdoc
     */
    public static function tableName()
    {
        return 'users';
    }

    /**
     * @inheritdoc
     */

    public static function getUsers()
    {
        $post = Users::find()
    -&gt;where(['user_id' =&gt; 1])
    -&gt;one();

    return $post;

    }
}`&lt;/code&gt;
</code></pre>

<p><b>Users.php</b>
    <code>`

<pre><code>namespace app\models;

use Yii;

/**
 * This is the model class for table "users".
 *
 * @property string $user_id
 * @property string $first_name
 * @property string $last_name
 * @property string $position
 * @property string $username
 * @property string $password
 * @property string $dept_id
 */
class Users extends \yii\db\ActiveRecord
{
    /**
     * @inheritdoc
     */
    public static function tableName()
    {
        return 'users';
    }

    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            [['user_id', 'first_name', 'last_name', 'position', 'username', 'password', 'dept_id'], 'required'],
            [['user_id', 'dept_id'], 'string', 'max' =&gt; 10],
            [['first_name', 'last_name'], 'string', 'max' =&gt; 30],
            [['position', 'username', 'password'], 'string', 'max' =&gt; 25],
        ];
    }

    /**
     * @inheritdoc
     */
    public function attributeLabels()
    {
        return [
            'user_id' =&gt; 'User ID',
            'first_name' =&gt; 'First Name',
            'last_name' =&gt; 'Last Name',
            'position' =&gt; 'Position',
            'username' =&gt; 'Username',
            'password' =&gt; 'Password',
            'dept_id' =&gt; 'Dept ID',
        ];
    }
}
`&lt;/code&gt;
</code></pre>

<p><b>LoginController.php</b>
    <code>&lt;?php
    namespace app\controllers;
    use app\models\Login;
    class LoginController extends \yii\web\Controller
    {
        public function actionIndex()
        {
            // $this-&gt;layout = 'loginLayout';
            // $this-&gt;render('index');
            $details = new Login();
            $model = $details-&gt;getUsers();
            $this-&gt;render('index',array('model'=&gt;$model)); 
        }
    }</code></code></p>

<p>I am new in YII I just started studying these</p>

<p>any answers will help thanks</p>