如何通过Magento 2.0中的属性代码获取产品属性选项

Following Magento 2 guidelines, you should not use ObjectManager by yourself. Instead, you must use dependency injection. More info here

In your Block/Controller/Helper..., create a constructor and inject \Magento\Catalog\Model\Product\Attribute\Repository class. For example :

/**
 * @var \Magento\Catalog\Model\Product\Attribute\Repository $_productAttributeRepository
 */
protected $_productAttributeRepository;

/**
 * @param \Magento\Catalog\Model\Product\Attribute\Repository $productAttributeRepository
 */
public function __construct(\Magento\Catalog\Model\Product\Attribute\Repository $productAttributeRepository)
{
    $this->_productAttributeRepository = $productAttributeRepository;
}

Then, in your dedicated method, you want to call (PHPDoc added for clarity) :

/** @var \Magento\Eav\Api\Data\AttributeOptionInterface[] $manufacturerOptions */
$manufacturerOptions = $this->_productAttributeRepository->get('manufacturer')->getOptions();

You can now get options values and labels this way :

foreach ($manufacturerOptions as $manufacturerOption) {
    $manufacturerOption->getValue();  // Value
    $manufacturerOption->getLabel();  // Label
}

Below code helpful to find a particular attribute values. Like here color is on my attribute, with below code we can get what and all colors are mapped with this attribute.

$attributeId = Mage::getResourceModel(‘eav/entity_attribute’)>getIdByCode(‘catalog_product’,’color’);
$collection =Mage::getResourceModel(‘eav/entity_attribute_option_collection’)>setPositionOrder(‘asc’)->setAttributeFilter($attributeId)->setStoreFilter(0)->load();
print_r($collection->getData());

<?php echo $_product->getResource()->getAttribute('movement')->getFrontend()->getValue($_product);?>

$_product is the object of Product The above code returns attribute value of attribute name "movement".

Inject an instance of \Magento\Catalog\Model\Product\Attribute\Repository in your constructor (in a block, helper class or wherever):

/**
 * @var \Magento\Catalog\Model\Product\Attribute\Repository $_productAttributeRepository
 */
protected $_productAttributeRepository;

/**
 * ...
 * @param \Magento\Catalog\Model\Product\Attribute\Repository $productAttributeRepository
 * ...
 */
public function __construct(
    ...
    \Magento\Catalog\Model\Product\Attribute\Repository $productAttributeRepository,
    ...
) {
    ...
    $this->_productAttributeRepository = $productAttributeRepository;
    ...
}

Then create a method in your class to get the attribute by code:

/**
 * Get single product attribute data 
 *
 * @return Magento\Catalog\Api\Data\ProductAttributeInterface
 */
public function getProductAttributeByCode($code)
{
    $attribute = $this->_productAttributeRepository->get($code);
    return $attribute;
}

You can then call this method like so, e.g. inside a .phtml file

$attrTest = $block->getProductAttributeByCode('test');

Then you can make calls on the attribute object, e.g.

1. Get options: $attrTest->getOptions()
2. Get frontend label for each store: $attrTest->getFrontendLabels()
3. Debug the data array: echo '> ' . print_r($attrTest->debug(), true);

debug: Array ( [attribute_id] => 274 [entity_type_id] => 4 [attribute_code] => product_manual_download_label [backend_type] => varchar [frontend_input] => text [frontend_label] => Product Manual Download Label [is_required] => 0 [is_user_defined] => 1 [default_value] => Product Manual Download [is_unique] => 0 [is_global] => 0 [is_visible] => 1 [is_searchable] => 0 [is_filterable] => 0 [is_comparable] => 0 [is_visible_on_front] => 0 [is_html_allowed_on_front] => 1 [is_used_for_price_rules] => 0 [is_filterable_in_search] => 0 [used_in_product_listing] => 0 [used_for_sort_by] => 0 [is_visible_in_advanced_search] => 0 [position] => 0 [is_wysiwyg_enabled] => 0 [is_used_for_promo_rules] => 0 [is_required_in_admin_store] => 0 [is_used_in_grid] => 1 [is_visible_in_grid] => 1 [is_filterable_in_grid] => 1 [search_weight] => 1 )

Using API Service layer, for EAV Attribute of any entity type, Inject the service data member in your constructor as follow.

protected $eavAttributeRepository;
public function __construct(
    ...
    \Magento\Eav\Api\AttributeRepositoryInterface $eavAttributeRepositoryInterface,
    ...
){
    ...
    $this->eavAttributeRepository = $eavAttributeRepositoryInterface;
    ...
}

And the you can get the attribute using this.

$attribute = $this->eavAttributeRepository->get('catalog_product', 'attribute_code_here');
// vardump($attribute->getData());

In order to get attribute option values array, use this.

$options = $attribute->getSource()->getAllOptions();