Categories' names as "None" when accessed via REST API

[overjolted]

Hello there.

I am using a fresh install Magento 2.3.2 CE with sample data, and I work extensively with Magento 2 REST API to integrate it with my python3-based app. 

The problem is, when I make a simple GET call to http://localhost/rest/all/V1/categories

response code is 200, and it returns me this: 

{'id': 1, 'parent_id': 0, 'name': None, 'is_active': None, 'position': 0, 'level': 0, 'product_count': None, 'children_data': [{'id': 2, 'parent_id': 1, 'name': None, 'is_active': None, 'position': 1, 'level': 1, 'product_count': None, 'children_data': [{'id': 38, 'parent_id': 2, 'name': None, 'is_active': None, 'position': 1, 'level': 2, 'product_count': None, 'children_data': []},

....

and list goes on, all category names are "None".

I tried indexer:reindex and cache:clean. None of those helped.

It's important part of my app to get categories names, so I can't skip it.

PS. I tried to do the same with 2.3.0 fresh install, and it worked just fine.

Is it a 2.3.2 bug? How do I solve that?

Thanks.

[Meetanshi]

Hello @overjolted 

Open vendor/magento/module-catalog/Model/Category/Tree.php

Replace the function getTree with the below code:

public function getTree($node, $depth = null, $currentLevel = 0)
   {
       $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
       $categoryFactory = $objectManager->get('\Magento\Catalog\Model\CategoryFactory');
       $categoryId = $node->getId();
       $nodeS = $categoryFactory->create()->load($categoryId);
       /** @var \Magento\Catalog\Api\Data\CategoryTreeInterface[] $children */
       $children = $this->getChildren($node, $depth, $currentLevel);
       /** @var \Magento\Catalog\Api\Data\CategoryTreeInterface $tree */
       $tree = $this->treeFactory->create();
       $tree->setId($nodeS->getId())
           ->setParentId($nodeS->getParentId())
           ->setName($nodeS->getName())
           ->setPosition($nodeS->getPosition())
           ->setLevel($nodeS->getLevel())
           ->setIsActive($nodeS->getIsActive())
           ->setProductCount($nodeS->getProductCount())
           ->setChildrenData($children);
       return $tree;
   }

The below screenshot shows how we implemented this code to get the solution:

https://prnt.sc/p6ppvb

Hope it helps.

[pham_quang tr]

Hi @Meetanshi 
Your solution is work But It will impact to performance web site when we load subcategory.
@overjolted Can you try my solution It will work and not impact performance website:

override

Magento\Catalog\Model\Category\Tree

protected function getNode(\Magento\Catalog\Model\Category $category)
{
    $nodeId = $category->getId();
    $categoryTree = $this->treeResourceFactory->create();
    $node = $categoryTree->loadNode($nodeId);
    $node->loadChildren();
    $this->prepareCollection();
    $categoryTree->addCollectionData($this->categoryCollection);
    return $node;
}

Hope it helps.
Bun!