🐛 Fix parent context inside of Repeaters and Groups (Fixes #219) (#220)

* 🎨 Return an empty array if `$fields` is empty

src/Builder/Concerns/HasParentContext.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace Log1x\AcfComposer\Builder\Concerns;
+
+trait HasParentContext
+{
+    public function __call($method, $args)
+    {
+        if (
+            preg_match('/^add.+/', $method) &&
+            (method_exists($this->fieldsBuilder, $method) || $this->fieldsBuilder->getFieldType($method))
+        ) {
+            $field = $this->handleCall($method, $args);
+            $field->setParentContext($this);
+
+            return $field;
+        }
+
+        return parent::__call($method, $args);
+    }
+
+    /**
+     * Hanlde the Fields Builder method call.
+     *
+     * @param  string  $method
+     * @param  array  $args
+     * @return mixed
+     */
+    protected function handleCall($method, $args)
+    {
+        return call_user_func_array([$this->fieldsBuilder, $method], $args);
+    }
+}

src/Builder/GroupBuilder.php

@@ -3,13 +3,16 @@
 namespace Log1x\AcfComposer\Builder;
 
 use Log1x\AcfComposer\Builder;
+use Log1x\AcfComposer\Builder\Concerns\HasParentContext;
 use StoutLogic\AcfBuilder\GroupBuilder as GroupBuilderBase;
 
 /**
  * @method FieldBuilder addPartial(string $partial)
  */
 class GroupBuilder extends GroupBuilderBase
 {
+    use HasParentContext;
+
     /**
      * The fields builder instance.
      *

src/Builder/RepeaterBuilder.php

@@ -3,13 +3,16 @@
 namespace Log1x\AcfComposer\Builder;
 
 use Log1x\AcfComposer\Builder;
+use Log1x\AcfComposer\Builder\Concerns\HasParentContext;
 use StoutLogic\AcfBuilder\RepeaterBuilder as GroupBuilder;
 
 /**
  * @method FieldBuilder addPartial(string $partial)
  */
 class RepeaterBuilder extends GroupBuilder
 {
+    use HasParentContext;
+
     /**
      * The fields builder instance.
      *

src/Field.php

@@ -42,6 +42,10 @@ public function getFields(bool $cache = true): array
 
         $fields = $this->fields();
 
+        if (empty($fields)) {
+            return [];
+        }
+
         $fields = is_a($fields, FieldsBuilder::class)
             ? [$fields]
             : $fields;