Issue #3483496 by smovs, just_like_good_vibes, pdureau: Preselect option when only one available

src/Plugin/UiPatterns/Source/DerivableContextSourceBase.php

@@ -278,6 +278,10 @@ abstract class DerivableContextSourceBase extends SourcePluginBase {
         }
       }
     }
+    // Set default value to the only available option.
+    if (!$derivable_context && count($options_derivable_contexts) === 1) {
+      $derivable_context = array_key_first($options_derivable_contexts);
+    }
     return $derivable_context;
   }
 

src/Plugin/UiPatterns/Source/EntityReferencedSource.php

@@ -46,7 +46,7 @@ class EntityReferencedSource extends DerivableContextSourceBase {
     $returned = [];
     foreach ($options as $option_key => $option_value) {
       if (!isset($option_to_group[$option_key])) {
-        $returned[$option_key] = $option_value;
+        $returned[$option_key] = (string) $this->getSimplifiedOptionWording($option_value);
       }
     }
     foreach ($groups as $group_key => $grouped_option_keys) {
@@ -55,6 +55,7 @@ class EntityReferencedSource extends DerivableContextSourceBase {
       foreach ($grouped_option_keys as $grouped_option_key) {
         if ($grouped_option_key !== $group_key) {
           $label = (string) $options[$grouped_option_key];
+          // @phpstan-ignore-next-line
           $returned[$group][$grouped_option_key] = explode(" referenced by ", $label)[0];
         }
       }
@@ -111,4 +112,37 @@ class EntityReferencedSource extends DerivableContextSourceBase {
     ];
   }
 
+  /**
+   * Return simplified wording for an option.
+   *
+   * @param mixed $option_value
+   *   The option value.
+   *
+   * @return mixed
+   *   The simplified option.
+   */
+  protected function getSimplifiedOptionWording(mixed $option_value): mixed {
+    if (!($option_value instanceof TranslatableMarkup)) {
+      return $option_value;
+    }
+    $arguments = $option_value->getArguments();
+
+    // Modify @bundle to keep only the part before any parentheses.
+    if (isset($arguments['@bundle'])) {
+      $bundle_value = $arguments['@bundle'];
+
+      // Keep only the part before parentheses, if present.
+      if (is_string($bundle_value) &&
+        preg_match('/^(.*?)\s*\(/', $bundle_value, $matches)) {
+        $arguments['@bundle'] = trim($matches[1]);
+      }
+    }
+
+    return new TranslatableMarkup(
+      '@field (@bundle)',
+      $arguments,
+      $option_value->getOptions()
+    );
+  }
+
 }