Magento 2 How to get product collection of all products?

Question

I am trying to fetch the product collection in Magento 2 which return the all products including

-> with all instock and out of stock products

-> with all Visibility (Not Visible Individually,Catalog,Search,Catalog, Search)

-> with all status (Enabled,Disabled)

Is it possible to get this type of product collection?

Answer 1

Using bellow code, you fetch the product which is currently enable.

<?php
namespace Vendor\Extension\Block;

class Yourblock extends \Magento\Framework\View\Element\Template
{    
    protected $productCollection;
    protected $stockFilter;

    public function __construct(
        \Magento\Backend\Block\Template\Context $context,        
        \Magento\Catalog\Model\ResourceModel\Product\CollectionFactory $productCollection,
        \Magento\CatalogInventory\Helper\Stock $stockFilter        
        array $data = []
    )
    {    
        $this->_productCollection= $productCollection;
        $this->stockFilter = $stockFilter;    
        parent::__construct($context, $data);
    }

    public function getProductCollection()
    {
        $collection = $this->_productCollection->create();
        $collection->addAttributeToSelect('*');
        $collection->addAttributeToFilter('status',\Magento\Catalog\Model\Product\Attribute\Source\Status::STATUS_ENABLED);

        // ADD THIS CODE IF YOU WANT IN-STOCK-PRODUCT
        $this->stockFilter->addInStockFilterToCollection($collection);

        return $collection;
    }
}
?>

NOTE You need to change getProductCollection() function code for your other requirement.

Answer 2

This might be a duplicate of: https://stackoverflow.com/questions/34740555/how-to-get-model-and-product-collection-in-magento-2/35679085#35679085

But here's an example anyway:

<?php 

use Magento\Catalog\Model\ResourceModel\Product\CollectionFactory;

class ProductCollectionExample
{   
    /** 
     * Product collection
     *   
     * @var \Magento\Catalog\Model\ResourceModel\Product\Collection
     */  
    protected $collection;

    /** 
     * Construct
     *   
     * @param CollectionFactory $collectionFactory
     */  
    public function __construct(
        CollectionFactory $collectionFactory,
    ) { 
        $this->collection = $collectionFactory->create();
    }   

    public function doStuff()
    {   
        foreach($this->collection as $product) {
            // do stuff
        }   
    }   
}  

Another option is that you can use the Magento\Catalog\Model\ProductRepository and leverage the getItems() method.

It's a bit more complicated IMHO, but it basically abstracts collections another level higher (little bit of a over simplification).

Take a look at this article by Alan Storm: https://alanstorm.com/magento_2_understanding_object_repositories/

Answer 3

If you want to display your collection in listing page. then add below code in List.phtml file

app/design/frontend/your_vendor/your_theme/Magento_Catalog/templates/product/list.phtml

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();

$productCollection = $objectManager->create('Magento\Catalog\Model\ResourceModel\Product\CollectionFactory');

$collection = $productCollection->create()

 ->addAttributeToSelect('*')

 ->load();