Composite Key in Model

Step 1: just add the trait "\Cyd293\Extenders\Database\Traits\CompositeKey" to your model

Step 2: make your primaryKey in array of composite Keys

Step 3: add another properties $compositeKey this must be the name of composite key

Step 4: add to appends the name that you have inputed in $compositeKey

Example:

Model File

class YourModel extends Model {
    use \Cyd293\Extenders\Database\Traits\CompositeKey;

    protected $compositeKey = 'mycomposite';
    protected $appends = ['mycomposite'];
    public $primaryKey = [
        'key1','key2','key3'
    ];
}

Note: to get the composite key value of the model just use the value of the model property $compositeKey Example:

fields:
    mycomposite:
        label: My Composite Key
        type: text

For the RelationBehavior

Step 1: Instead of using "Backend.Behaviors.RelationController" to implement in Controller, use "Cyd293\Extenders\Behaviors\RelationController"

Step 2: add this "\Cyd293\Extenders\Traits\RelationTrait" trait in your controller

Example:

class Permission extends Controller
{
    use \Cyd293\Extenders\Traits\RelationTrait;

    public $implement = [
        'Backend\Behaviors\ListController',
        'Backend\Behaviors\FormController',
        'Cyd293.Extenders.Behaviors.RelationController'
    ];

    public $listConfig = 'config_list.yaml';
    public $formConfig = 'config_form.yaml';
    public $relationConfig = 'config_relation.yaml';

}