Yii2 Dynamic Fields behavoir

Behavior for Yii2 framework to work with custom (dynamic) fields.

Installation

The preferred way to install this extension is through composer.

Either run

php composer.phar require --prefer-dist chemezov/yii2-dynamic-fields "*"

or add

"chemezov/yii2-dynamic-fields": "*"

to the require section of your composer.json file.

Apply migrations:

yii migrate --migrationPath=@vendor/chemezov/yii2-dynamic-fields/migrations

Usage

use chemezov\yii2_dynamic_fields\DynamicFieldsBehavior;

class User extends \yii\db\ActiveRecord
{
    public function behaviors()
    {
        return [
            'dynamicFields' => [
                'class' => DynamicFieldsBehavior::class,
                'fields' => ['my_custom_string_1', 'my_custom_string_2'],
            ],
        ];
    }
        
    public function rules() {
        return [
            [['my_custom_string_1', 'my_custom_string_2'], 'string', 'max' => 255],
        ];
    }
        
    public function attributeLabels()
    {
        return [
            'my_custom_string_1' => 'My string 1',
            'my_custom_string_2' => 'My string 2',
        ];
    }
}

Now you can use your custom attributes:

$model = new User();
$value = $model->my_custom_string_1; // get value
$model->my_custom_string_1 = 'some value'; // set value
$model->save();

Other types

If you want to use other types than string you can use AttributeTypecastBehavior. Add AttributeTypecastBehavior after DynamicFieldsBehavior. It is important!

use chemezov\yii2_dynamic_fields\DynamicFieldsBehavior;
use yii\behaviors\AttributeTypecastBehavior;

class User extends \yii\db\ActiveRecord
{
    public function behaviors()
    {
        return [
            'dynamicFields' => [
                'class' => DynamicFieldsBehavior::class,
                'fields' => ['my_boolean_attribute'],
            ],
            'typecast' => [
                'class' => AttributeTypecastBehavior::class,
                'attributeTypes' => [
                    'my_boolean_attribute' => AttributeTypecastBehavior::TYPE_BOOLEAN,
                ],
                'typecastAfterFind' => true,
            ],
        ];
    }
        
    public function rules() {
        return [
            [['my_boolean_attribute'], 'default', 'value' => null],
            [['my_boolean_attribute'], 'boolean'],
        ];
    }
        
    public function attributeLabels()
    {
        return [
            'my_boolean_attribute' => 'My boolean attribute',
        ];
    }
}

Example

For example you have User model. And you want to store address and some other values e.g. is_client but don't want to extend your DB table. So you can use this behavior. Here example of User model:

use chemezov\yii2_dynamic_fields\DynamicFieldsBehavior;
use yii\behaviors\AttributeTypecastBehavior;

/**
 * Class User
 *
 * @property string $address
 * @property boolean $is_client
 */
class User extends \yii\db\ActiveRecord
{
    public function rules()
    {
        return [
        ...
            [$this->getAdditionalFieldsNamesString(), 'string', 'max' => 255],
            [$this->getAdditionalFieldsNamesBoolean(), 'default', 'value' => null],
            [$this->getAdditionalFieldsNamesBoolean(), 'boolean'],
        ];
    }
    
    public function behaviors()
    {
        return [
            'dynamicFields' => [
                'class' => DynamicFieldsBehavior::class,
                'fields' => $this->getAdditionalFieldsNames(),
            ],
            'typecast' => [
                'class' => AttributeTypecastBehavior::class,
                'attributeTypes' => [
                    'is_client' => AttributeTypecastBehavior::TYPE_BOOLEAN,
                ],
                'typecastAfterFind' => true,
            ],
        ];
    }
    
    public function getAdditionalFieldsNamesString()
    {
        return [
            'address',
        ];
    }

    public function getAdditionalFieldsNamesBoolean()
    {
        return [
            'is_client',
        ];
    }

    public function getAdditionalFieldsNames()
    {
        return array_merge($this->getAdditionalFieldsNamesString(), $this->getAdditionalFieldsNamesBoolean());
    }

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

Usage for JsonDynamicFieldsBehavior

Using this behavior is very similar to using it with the DynamicFieldsBehavior. This behavior store dynamic fields in separate column of model table in json.

You should create a column in your model table, e.g. additional_data, with type text, and allow null value. Example for migration:

$this->addColumn('your_table', 'additional_data', $this->text()->null());

use chemezov\yii2_dynamic_fields\JsonDynamicFieldsBehavior;
use yii\behaviors\AttributeTypecastBehavior;

class User extends \yii\db\ActiveRecord
{
    public function behaviors()
    {
        return [
            'dynamicFields' => [
                'class' => JsonDynamicFieldsBehavior::class,
                'fields' => ['my_boolean_attribute'],
            ],
            'typecast' => [
                'class' => AttributeTypecastBehavior::class,
                'attributeTypes' => [
                    'my_boolean_attribute' => AttributeTypecastBehavior::TYPE_BOOLEAN,
                ],
                'typecastAfterFind' => true,
            ],
        ];
    }
        
    public function rules() {
        return [
            [['my_boolean_attribute'], 'default', 'value' => null],
            [['my_boolean_attribute'], 'boolean'],
        ];
    }
        
    public function attributeLabels()
    {
        return [
            'my_boolean_attribute' => 'My boolean attribute',
        ];
    }
}