README

Installation

composer require ed-smartass/yii2-relation-behavior

Example

use Smartass\Yii2RelationBehavior\RelationBehavior;

// ...

/**
 * @inheritdoc
 */
public function behaviors()
{
    return [
        // ...
        'relation' => [
            'class' => RelationBehavior::class,
            'relations' => [
                // Many to one relation
                'manufacturer' => [
                    'target' => Manufacturer::class,
                    'link' => ['manufacturer_id' => 'manufacturer_id']
                ],
                // One to many relation
                'modelCategories' => [
                    'target' => ModelCategories::class,
                    'link' => ['model_id' => 'model_id'],
                    'multiple' => true
                ],
                // Many to many relation
                'categories' => [
                    'target' => Category::class,
                    'link' => ['category_id' => 'category_id'],
                    'multiple' => true,
                    'via' => 'modelCategories'
                ]
            ]
        ]
        // ...
    ];
}

// ...

Relation settings

target — target class
- Type: string
- Required: true
link — link condition (same as native yii2 declaration)
- Type: array
- Required: true
multiple — is multiple relation or not (if true relation will be like $this->hasMany(...) overwise $this->hasOne(...))
- Type: bool
- Required: false
- Default: false
onCondition — linking condition (will expand to $this->hasMany(...)->onCondition(['status' => Category::STATUS_ACTIVE]))
- Type: array|null
- Required: false
- Default: null
filter — extra linking filter
- Type: array|string|Closure|null
- Required: false
- Default: null
via — name of junction relation (will expand to $this->hasMany(...)->via(...))
- Type: string|null
- Required: false
- Default: false
extraColumns — extra column for linking many to many relations
- Type: array|null
- Required: false
- Default: []
find - Callback for searching related record from array (if you set relation value $model->manufacturer = ['manufacturer_id' => 12])
- Type: Closure|null
- Required: false
- Default: Closure (Searching by all pk keys)

How to use

This behavior will allow you to use related models like usuall without created extra methods like:

public function getCategories()
{
    return $this->hasMany(...);
}

Instead, you just need to declare this in the behavior like on example.__ In addition, this behavior can create or save changes to the related model. To do this, behavior uses a transaction. So you can do this:

$model->categories = [
    ['category_id' => 1], // Will find (or create if not exists) category with category_id `1`
    ['category_id' => 2, 'name' => 'New name'], // Will find (or create) category with category_id `1` and change name
    ['name' => 'New category'] // Will create new category
];
$model->save();

Each related model will be validated before saving. If it fails, the transaction will be canceled.__ Don't foget add relations to model rules as safe

/**
 * @inheritdoc
 */
public function rules()
{
    return [
        // ...
        ['categories', 'safe'],
        // ...
    ];
}

Limitation

This behavior will successfully save only truly basic relations

One to many
Many to one
Many to many

ed-smartass / yii2-relation-behavior

Maintainers

Details