Merge pull request #1051 from afoucret/remove-irrelant-facets

Remove facets when all options are the same for each products.

src/module-elasticsuite-catalog/Model/Layer/Filter/Attribute.php

@@ -142,7 +142,6 @@ protected function _getItemsData()
     {
         /** @var \Magento\CatalogSearch\Model\ResourceModel\Fulltext\Collection $productCollection */
         $productCollection = $this->getLayer()->getProductCollection();
-
         $optionsFacetedData = $productCollection->getFacetedData($this->getFilterField());
 
         $items     = [];
@@ -152,12 +151,16 @@ protected function _getItemsData()
             unset($optionsFacetedData['__other_docs']);
         }
 
-        foreach ($optionsFacetedData as $value => $data) {
-            $items[$value] = [
-                'label' => $this->tagFilter->filter($value),
-                'value' => $value,
-                'count' => $data['count'],
-            ];
+        $minCount = !empty($optionsFacetedData) ? min(array_column($optionsFacetedData, 'count')) : 0;
+
+        if (!empty($this->currentFilterValue) || $minCount < $productCollection->getSize()) {
+            foreach ($optionsFacetedData as $value => $data) {
+                $items[$value] = [
+                    'label' => $this->tagFilter->filter($value),
+                    'value' => $value,
+                    'count' => $data['count'],
+                ];
+            }
         }
 
         $items = $this->addOptionsData($items);