From fdc08aabed05cbf89e4440bc4a3ed251bcd9bc2f Mon Sep 17 00:00:00 2001
From: Pat Dunlavey <pat@born-digital.com>
Date: Wed, 13 Apr 2022 12:47:11 -0400
Subject: [PATCH] issues/191--metadatadate-validation-error --- implemented
 override of getElementSelectorInputValue() Here we create a special purpose
 override of
 \Drupal\webform\Plugin\WebformElementBase::getElementSelectorInputValue at
 \Drupal\webform_strawberryfield\Plugin\WebformElement\MetadataDateBase::getElementSelectorInputValue
 It attempts to apply the selector to the MetadataDateBase form element and
 get the value. We handle both single and multiple value versions of the
 field. If the selector results in an array, we return it unless it is empty.
 This will trigger a array to string conversion notice downstream in
 \Drupal\webform\WebformSubmissionConditionsValidator::checkConditionTrigger,
 but that's ok/appropriate.

---
 .../WebformElement/MetadataDateBase.php       | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/src/Plugin/WebformElement/MetadataDateBase.php b/src/Plugin/WebformElement/MetadataDateBase.php
index f285d2f..ca4f050 100644
--- a/src/Plugin/WebformElement/MetadataDateBase.php
+++ b/src/Plugin/WebformElement/MetadataDateBase.php
@@ -14,6 +14,7 @@
 use Drupal\webform\Plugin\WebformElementBase;
 use Drupal\webform\Utility\WebformArrayHelper;
 use Drupal\webform\Utility\WebformDateHelper;
+use Drupal\webform\WebformSubmissionConditionsValidator;
 use Drupal\webform\WebformSubmissionInterface;
 use Drupal\webform\WebformInterface;
 
@@ -268,6 +269,43 @@ public function validateConfigurationForm(array &$form, FormStateInterface $form
     parent::validateConfigurationForm($form, $form_state);
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getElementSelectorInputValue($selector, $trigger, array $element, WebformSubmissionInterface $webform_submission) {
+    $input_name = WebformSubmissionConditionsValidator::getSelectorInputName($selector);
+    $input_keys = WebformSubmissionConditionsValidator::getInputNameAsArray($input_name, NULL);
+    // Multi-value fields utilize input paths in the form 'webform_example_element_multiple[items][0][_item_]' => '{Test 01}',
+    // but ::getRawValue does not work with 'items' and '_item_' in the path. So we strip them out here.
+    $input_keys = array_diff($input_keys, ['items', '_item_']);
+    // After doing so, we expect the input keys to be in the form:
+    // ['webform field name', 'the composite element key'] OR ['webform field name', 'multiple-value delta', 'the composite element key']
+    // If neither case applies, return NULL;
+    if(!(count($input_keys) == 2 || count($input_keys) == 3)) {
+      return NULL;
+    }
+    else {
+      // Prepare options for ::getRawValue().
+      $options = [
+        'webform_key' => reset($input_keys),
+        'composite_key' => end($input_keys),
+      ];
+      // Set delta for multiple value elements.
+      if(!empty($element['#multiple']) ) {
+        $options['delta'] = (count($input_keys) == 3 && is_numeric($input_keys[1])) ? $input_keys[1] : 0;
+      }
+
+      $input_value = $this->getRawValue($element, $webform_submission, $options);
+      // getRawValue can return an array, which \Drupal\webform\WebformSubmissionConditionsValidator::checkConditionTrigger
+      // tries to cast to a string and therefore generates a php array to string conversion warning.
+      // If the array is empty, we replace it with an empty string. Otherwise we let checkConditionTrigger complain.
+      if(is_array($input_value) && empty($input_value)) {
+        $input_value = "";
+      }
+      return $input_value;
+    }
+  }
+
   /**
    * Get the type of date/time element.
    *