PHP code example of yii2tech / ar-role

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

yii2tech / ar-role example snippets

class Human extends \yii\db\ActiveRecord
{
    public static function tableName()
    {
        return 'Human';
    }
}

class Student extends Human // extending `Human` - not `ActiveRecord`!
{
    public function behaviors()
    {
        return [
            'roleBehavior' => [
                'class' => RoleBehavior::className(), // Attach role behavior
                'roleRelation' => 'studentRole', // specify name of the relation to the slave table
                'roleAttributes' => [
                    'roleId' => Human::ROLE_STUDENT // mark 'Human' record as 'student'
                ],
            ],
        ];
    }

    public function getStudentRole()
    {
        // Here `StudentRole` is and ActiveRecord, which uses 'Student' table :
        return $this->hasOne(StudentRole::className(), ['humanId' => 'id']);
    }
}

$students = Student::find()->all();

class Student extends Human
{
    // ...

    public static function find()
    {
        return parent::find()->where(['role' => 'student']);
    }
}

class Instructor extends \yii\db\ActiveRecord // do not extending `Human`!
{
    public function behaviors()
    {
        return [
            'roleBehavior' => [
                'class' => RoleBehavior::className(), // Attach role behavior
                'roleRelation' => 'human', // specify name of the relation to the master table
                'isOwnerSlave' => true, // indicate that owner is a role slave - not master
                'roleAttributes' => [
                    'roleId' => Human::ROLE_STUDENT // will be applied to the 'Human' record
                ],
            ],
        ];
    }

    public function getHuman()
    {
        return $this->hasOne(Human::className(), ['id' => 'humanId']);
    }
}

$model = Student::findOne(1);
echo $model->studyGroupId; // equals to $model->studentRole->studyGroupId

$model = Instructor::findOne(2);
echo $model->name; // equals to $model->human->name

$model = new Student();
$model->studyGroupId = 12;

$model = new Instructor();
$model->name = 'John Doe';

class Human extends \yii\db\ActiveRecord
{
    // ...

    public function sayHello($name)
    {
        return 'Hello, ' . $name;
    }
}

class Instructor extends \yii\db\ActiveRecord
{
    public function behaviors()
    {
        return [
            'roleBehavior' => [
                'class' => RoleBehavior::className(), // Attach role behavior
                // ...
            ],
        ];
    }
}

$model = new Instructor();
echo $model->sayHello('John'); // outputs: 'Hello, John'

$model = new Student();
$model->studyGroupId = 'invalid value';
var_dump($model->validate()); // outputs "false"
var_dump($model->hasErrors('studyGroupId')); // outputs "true"

class Student extends Human
{
    // ...

    public function rules()
    {
        return [
            // ...
            ['studyGroupId', 'integer'],
            ['hasScholarship', 'boolean'],
        ];
    }
}

$model = new Student();
$model->name = 'John Doe';
$model->address = 'Wall Street, 12';
$model->studyGroupId = 14;
$model->save(); // insert one record to the 'Human' table and one record - to the 'Student' table

$student = Student::findOne(17);
$student->delete(); // Deletes one record from 'Human' table and one record from 'Student' table

$students = Student::find()->with('studentRole')->all(); // only 2 queries will be performed
foreach ($students as $student) {
    echo $student->studyGroupId . '<br>';
}

$instructors = Instructor::find()->with('human')->all(); // only 2 queries will be performed
foreach ($instructors as $instructor) {
    echo $instructor->name . '<br>';
}

class Instructor extends ActiveRecord
{
    // ...

    public static function find()
    {
        return parent::find()->with('human');
    }
}

$students = Student::find()
    ->innerJoinWith('studentRole')
    ->andWhere(['name' => 'John']) // condition for 'Human' table
    ->andWhere(['hasScholarship' => true]) // condition for 'Student' table
    ->all();

use yii\web\Controller;

class StudentController extends Controller
{
    public function actionCreate()
    {
        $model = new Student();

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(['view']);
        }

        return $this->render('create', [
            'model' => $model,
        ]);
    }

    // ...
}

use yii\helpers\ArrayHelper;
use yii\helpers\Html;
use yii\widgets\ActiveForm;

/* @var $model Student */

class Student extends Human
{
    // ...

    public function attributeLabels()
    {
        return array_merge(
            parent::attributeLabels(),
            $this->getRoleRelationModel()->attributeLabels()
        );
    }

    public function attributeHints()
    {
        return array_merge(
            parent::attributeHints(),
            $this->getRoleRelationModel()->attributeHints()
        );
    }
}

class Student extends Human
{
    // ...

    public function rules()
    {
        return [
            // ...
            [$this->getRoleRelationModel()->attributes(), 'safe'],
        ];
    }
}

use yii\web\Controller;

class StudentController extends Controller
{
    public function actionCreate()
    {
        $model = new Student();

        $post = Yii::$app->request->post();

        // data loading separated, however only single save     // ...
}

use yii\helpers\ArrayHelper;
use yii\helpers\Html;
use yii\widgets\ActiveForm;

/* @var $model Student */