How to instantiate an object in a template .phtml

[marcel_al-mutawa]

Im currently invoking the method getAttributeGroupId using the objectmanager, however the object manager should not be used to instantiate as mentioned in the Magento 2 documentation. What is the best practice way to instantiate? Please help ive been stuck on this for dayz.

$_objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$config= $_objectManager->get('Magento\Catalog\Model\Config');
$attributeGroupId = $config->getAttributeGroupId($_product->getAttributeSetId(), '');

[qaisar_satti]

Use following code

$groupCollection = $_objectManager->create('Magento\Eav\Model\ResourceModel\Entity\Attribute\Group\Collection');
$groupCollection->addFieldToFilter('attribute_set_id',$_product->getAttributeSetId());
$groupCollection->setOrder('sort_order','ASC');
echo $groupCollection->getId();

Reference

[marcel_al-mutawa]

You are using the objectmanager to instantiate. This is not good practice according to magento 2 documentation. Please provide a best practice solution.

[prakash786]

Hello

You need to create custom block like this

<?php
namespace QaisarSatti\HelloWorld\Block;

class HelloWorld extends \Magento\Framework\View\Element\Template
{

  protected $_productloader;
  protected $request;
  protected $_groupCollection;


  public function __construct(
        \Magento\Framework\View\Element\Template\Context $context,
        \Magento\Catalog\Model\ProductFactory $_productloader,
        \Magento\Eav\Model\ResourceModel\Entity\Attribute\Group\CollectionFactory $_groupCollection,
        \Magento\Framework\App\Request\Http $request

    ) {


        $this->_productloader = $_productloader;
        $this->request = $request;
        $this->_groupCollection = $_groupCollection;
        parent::__construct($context);
    }
//get the product
    public function getLoadProduct()
    {
          $id=10;
      
        return $this->_productloader->create()->load($id);
    }
//Get attribute group id
    public function getAttributeGroupId($attributeSetId)
    {
         $groupCollection = $this->_groupCollection->create();
         $groupCollection->addFieldToFilter('attribute_set_id',$attributeSetId);
         $groupCollection->addFieldToFilter('attribute_group_name','Grid Attributes');
         
         
         return $groupCollection->getFirstItem();

    }
    //Get all attribute groups
    public function getAttributeGroups($attributeSetId)
    {
         $groupCollection = $this->_groupCollection->create();
         $groupCollection->addFieldToFilter('attribute_set_id',$attributeSetId);
         
         $groupCollection->setOrder('sort_order','ASC');
         return $groupCollection;

    }
//get attribute by groups
 public function getGroupAttributes($pro,$groupId, $productAttributes){
        $data=[];
        $no =__('No');
        foreach ($productAttributes as $attribute){
    
          if ($attribute->isInGroup($pro->getAttributeSetId(), $groupId) && $attribute->getIsVisibleOnFront() ){
              if($attribute->getFrontend()->getValue($pro) && $attribute->getFrontend()->getValue($pro)!='' && $attribute->getFrontend()->getValue($pro)!=$no){
                $data[]=$attribute;
              }
          }

        }
 
  return $data;
 }
 
 }

Template files likes this 

$_product=$block->getLoadProduct();
$groupid=$block->getAttributeGroupId($_product->getAttributeSetId());
$attributesgroups=$block->getAttributeGroups($_product->getAttributeSetId());

$productAttributes=$_product->getAttributes();




?>
 
<?php
foreach ($attributesgroups as $attributesgroup):


 $attributes=$block->getGroupAttributes($product,$attributesgroup->getAttributeGroupId(),$productAttributes);
 

 
 
 if($attributes){ ?>

 

   
            <h3 class="col label" scope="row"><?php echo $attributesgroup->getAttributeGroupName() ?></h3>
           
           
            <div class="additional-attributes-wrapper table-wrapper block">
        <table class="data table additional-attributes" id="product-attribute-specs-table">
            <tbody> 
            
    <?php
    foreach ($attributes as $attribute): ?>
        
       
        
             <tr>
                    <td class="col label" scope="row"><?php echo $attribute->getFrontendLabel() ?></td>
                    <td class="col data feature" data-th="<?php echo $attribute->getFrontendLabel() ?>"><?php /* @escapeNotVerified */ echo $attribute->getFrontend()->getValue($product) ?></td>
                </tr>
            
            
        
        <?php    
    endforeach; ?>
           </tbody>
        </table>
        </div>
 <?php }
endforeach;

?>