Hey guys,
I’m new to Yii2 and right now I don’t get how I create relations between models. I have used Gii to generate a few models als also used the CRUD generator. I also tried setting foreign keys in the database - but Gii won’t generate the relations for me. But anyway this should also be possible manually right?
And at this point I need your help, let’s say I have the following classes “Product” and “Category”. The Product got a field “category” in which a category id will be saved. But how to I create the relationship so I have easy access to the category name instead of the category id (for example showing it in a GridView widget)?
<?php
namespace app\models;
use Yii;
/**
* This is the model class for table "products".
*
* @property integer $id
* @property string $name
* @property string $description
* @property double $price
* @property integer $category
*/
class Product extends \yii\db\ActiveRecord {
/**
* @inheritdoc
*/
public static function tableName() {
return 'products';
}
/**
* @inheritdoc
*/
public function rules() {
return [
[['name', 'description', 'price', 'category'],'required'],
];
}
/**
* @inheritdoc
*/
public function attributeLabels() {
return [
'id' => 'ID',
'name' => 'name',
'description' => 'description',
'price' => 'price',
'category' => 'category',
];
}
}
<?php
namespace app\models;
use Yii;
/**
* This is the model class for table "categories".
*
* @property integer $id
* @property string $description
*/
class Category extends \yii\db\ActiveRecord {
/**
* @inheritdoc
*/
public static function tableName() {
return 'categories';
}
/**
* @inheritdoc
*/
public function rules() {
return [
[['description'], 'required'],
[['description'], 'string']
];
}
/**
* @inheritdoc
*/
public function attributeLabels() {
return [
'id' => 'ID',
'description' => 'description',
];
}
}
Thanks for helping me out! 