ENGCOM-5622: Validated input text fields to enter only blank spaces #23059

 - Merge Pull Request #23059 from RonakParmar/magento2:23055_advanced_search_fix
 - Merged commits:
   1. ddcf068
   2. 14b90ed
   3. a2ca170
   4. 64c1131

Author: magento-engcom-team

app/code/Magento/CatalogSearch/Model/Advanced.php

@@ -181,8 +181,8 @@ public function __construct(
     /**
      * Add advanced search filters to product collection
      *
-     * @param   array $values
-     * @return  $this
+     * @param array $values
+     * @return $this
      * @throws LocalizedException
      * @SuppressWarnings(PHPMD.CyclomaticComplexity)
      * @SuppressWarnings(PHPMD.NPathComplexity)
@@ -197,6 +197,11 @@ public function addFilters($values)
             if (!isset($values[$attribute->getAttributeCode()])) {
                 continue;
             }
+            if ($attribute->getFrontendInput() == 'text' || $attribute->getFrontendInput() == 'textarea') {
+                if (!trim($values[$attribute->getAttributeCode()])) {
+                    continue;
+                }
+            }
             $value = $values[$attribute->getAttributeCode()];
             $preparedSearchValue = $this->getPreparedSearchCriteria($attribute, $value);
             if (false === $preparedSearchValue) {
@@ -343,9 +348,9 @@ protected function addSearchCriteria($attribute, $value)
      *
      * @todo: Move this code to block
      *
-     * @param   EntityAttribute $attribute
-     * @param   mixed $value
-     * @return  string|bool
+     * @param EntityAttribute $attribute
+     * @param mixed $value
+     * @return string|bool
      * @SuppressWarnings(PHPMD.CyclomaticComplexity)
      * @SuppressWarnings(PHPMD.NPathComplexity)
      */