fix guessed "their_field"

Author: mvorisek

demos/form-control/dropdown-plus.php

@@ -21,7 +21,7 @@
 
 $form->addControl('category_id', [Form\Control\Dropdown::class, 'model' => new Category($app->db)]);
 $form->addControl('sub_category_id', [Form\Control\DropdownCascade::class, 'cascadeFrom' => 'category_id', 'reference' => Category::hinting()->fieldName()->SubCategories]);
-// DEBUG only, uncomment before merge!!! $form->addControl('product_id', [Form\Control\DropdownCascade::class, 'cascadeFrom' => 'sub_category_id', 'reference' => SubCategory::hinting()->fieldName()->Products]);
+$form->addControl('product_id', [Form\Control\DropdownCascade::class, 'cascadeFrom' => 'sub_category_id', 'reference' => SubCategory::hinting()->fieldName()->Products]);
 
 $form->onSubmit(function (Form $form) use ($app) {
     $message = $app->encodeJson($form->model->get());

demos/init-db.php

@@ -223,7 +223,7 @@ protected function init(): void
         $this->addField($this->fieldName()->type, ['caption' => 'MIME Type']);
         $this->addField($this->fieldName()->is_folder, ['type' => 'boolean']);
 
-        $this->hasMany($this->fieldName()->SubFolder, ['model' => [self::class], 'their_field' => $this->fieldName()->parent_folder_id])
+        $this->hasMany($this->fieldName()->SubFolder, ['model' => [self::class], 'their_field' => self::hinting()->fieldName()->parent_folder_id])
             ->addField($this->fieldName()->count, ['aggregate' => 'count', 'field' => $this->persistence->expr($this, '*')]);
 
         $this->hasOne($this->fieldName()->parent_folder_id, ['model' => [Folder::class]])
@@ -304,8 +304,8 @@ protected function init(): void
         parent::init();
         $this->addField($this->fieldName()->name);
 
-        $this->hasMany($this->fieldName()->SubCategories, ['model' => [SubCategory::class]]);
-        $this->hasMany($this->fieldName()->Products, ['model' => [Product::class]]);
+        $this->hasMany($this->fieldName()->SubCategories, ['model' => [SubCategory::class], 'their_field' => SubCategory::hinting()->fieldName()->product_category_id]);
+        $this->hasMany($this->fieldName()->Products, ['model' => [Product::class], 'their_field' => Product::hinting()->fieldName()->product_category_id]);
     }
 }
 
@@ -325,7 +325,7 @@ protected function init(): void
         $this->addField($this->fieldName()->name);
 
         $this->hasOne($this->fieldName()->product_category_id, ['model' => [Category::class]]);
-        $this->hasMany($this->fieldName()->Products, ['model' => [Product::class]]);
+        $this->hasMany($this->fieldName()->Products, ['model' => [Product::class], 'their_field' => Product::hinting()->fieldName()->product_category_id]);
     }
 }