Fix the default value bug.

Author: dadish

src/Field/TemplatedPageArray/TemplatedPageArrayField.php

@@ -41,9 +41,14 @@ public function getDescription()
 
   public function resolve($value, array $args, ResolveInfo $info)
   {
+    if (isset($args[TemplatedSelectorType::ARGUMENT_NAME])) {
+      $selector = $args[TemplatedSelectorType::ARGUMENT_NAME];
+    } else {
+      $selector = $this->defaultSelector;
+    }
     Utils::moduleConfig()->currentTemplateContext = $this->template;
     $pages = \Processwire\wire('pages');
-    return $pages->find($args[TemplatedSelectorType::ARGUMENT_NAME]);
+    return $pages->find($selector);
   }
 
 }

src/Field/Traits/OptionalSelectorTrait.php

@@ -10,19 +10,25 @@
 
 trait OptionalSelectorTrait {
 
+  protected $defaultSelector;
+
   public function build(FieldConfig $config)
   {
     $defaultSelector = new SelectorType();
+    $this->defaultSelector = $defaultSelector->serialize("");
     $config->addArgument(new InputField([
       'name' => SelectorType::ARGUMENT_NAME,
       'type' => new SelectorType(),
-      'default' => $defaultSelector->serialize(""),
     ]));
   }
 
   public function resolve($value, array $args, ResolveInfo $info)
   {
-    $selector = $args[SelectorType::ARGUMENT_NAME];
+    if (isset($args[SelectorType::ARGUMENT_NAME])) {
+      $selector = $args[SelectorType::ARGUMENT_NAME];
+    } else {
+      $selector = $this->defaultSelector;
+    }
     $fieldName = $this->getName();
     $result = $value->$fieldName($selector);
     if ($result instanceof NullPage) return null;

src/Field/Traits/OptionalTemplatedSelectorTrait.php

@@ -9,19 +9,25 @@
 
 trait OptionalTemplatedSelectorTrait {
 
+  protected $defaultSelector;
+
   public function build(FieldConfig $config)
   {
-    $defaultValue = new TemplatedSelectorType($this->template);
+    $defaultSelector = new TemplatedSelectorType($this->template);
+    $this->defaultSelector = $defaultSelector->serialize("");
     $config->addArgument(new InputField([
       'name' => TemplatedSelectorType::ARGUMENT_NAME,
       'type' => new TemplatedSelectorType($this->template),
-      'default' => $defaultValue->serialize(""),
     ]));
   }
 
   public function resolve($value, array $args, ResolveInfo $info)
   {
-    $selector = $args[TemplatedSelectorType::ARGUMENT_NAME];
+    if (isset($args[TemplatedSelectorType::ARGUMENT_NAME])) {
+      $selector = $args[TemplatedSelectorType::ARGUMENT_NAME];
+    } else {
+      $selector = $this->defaultSelector;
+    }
     $fieldName = $this->getName();
     $result = $value->$fieldName($selector);
     if ($result instanceof NullPage) return null;