Phalcon - Implement One-To-Many self-referencing relationship in model

问题

How to implement this feature in the Phalcon? Doctrine has this. I want something similar like that. My office table in the database:

Id (PK) | ParentId | Name

I want a function like:

Office::findFirst()->children();

I've tried to define a Many-to-One relationship in my model but it always returns an empty array.

回答1:

In your model:

namespace Models;
class ProductCategories extends BaseModel
    public function initialize()
    {
        $this->hasMany('id', 'Models\ProductCategories', 'parent_id', [
            'alias' => 'children',
            'params' => [
                'order' => 'position ASC',
                'conditions' => 'active = 1', 
            ]
        ]);
    }
 }

Note the full namespace.

Usage:

$parent = \Models\ProductCategories::findFirst();
print_r($parent->children->toArray());

More info: https://docs.phalconphp.com/en/3.1/db-models-relationships

来源：https://stackoverflow.com/questions/45534869/phalcon-implement-one-to-many-self-referencing-relationship-in-model