Magento 2 - Category Listing in Left Column

Question

I need to list out categories and child categories in the left nav of the category page and I'm trying to use this extension:

https://github.com/Sebwite/magento2-category-sidebar

As of now all that it is doing is showing the to root category and not pulling in any of the child categories:

Is there another solution to this? Or does someone have experience with this particular extension and would know what is going on?

Answer 1

After reindexing my data, it worked. I just ran this at the webroot of my magento install:

php bin/magento indexer:reindex

Answer 2

In my case, I installed this extension with composer. And it also has this bug. I downloaded zip package and reinstall it. And now it works. The package with composer was out of date.

Answer 3

We can get categories and subcategories by below code at anywhere

<?php
$objectManagerr = \Magento\Framework\App\ObjectManager::getInstance();
                    $categoryFactory = $objectManagerr->create('Magento\Catalog\Model\ResourceModel\Category\CollectionFactory');

                    $categories = $categoryFactory->create()                              
                                ->addAttributeToSelect('*');

foreach ($categories as $category){  
$catId = $category->getId();
echo $category->getName();
$subcategory = $objectManagerr->create('Magento\Catalog\Model\Category')->load($catId);
$subcats = $subcategory->getChildrenCategories();
    foreach ($subcats as $subcat) {
        $_category = $objectManagerr->create('Magento\Catalog\Model\Category')->load($subcat->getId());
        echo $_category->getName();
    }
} 
?>