/**
* @param \Mageplaza\Blog\Model\Post $post
* @return array
*/
protected function saveCategoryRelation(\Mageplaza\Blog\Model\Post $post)
{
$post->setIsChangedCategoryList(false);
$id = $post->getId();
$categories = $post->getCategoriesIds();
if ($categories === null) {
return $this;
}
$oldCategoryIds = $post->getCategoryIds();
$insert = array_diff_key($categories, $oldCategoryIds);
$delete = array_diff_key($oldCategoryIds, $categories);
$adapter = $this->getConnection();
if (!empty($delete)) {
$condition = ['category_id IN(?)' => $delete, 'post_id=?' => $id];
$adapter->delete($this->postCategoryTable, $condition);
}
if (!empty($insert)) {
$data = [];
foreach ($insert as $categoryId) {
$data[] = ['post_id' => (int) $id, 'category_id' => (int) $categoryId, 'position' => 1];
}
$adapter->insertMultiple($this->postCategoryTable, $data);
}
if (!empty($insert) || !empty($delete)) {
$categoryIds = array_unique(array_merge(array_keys($insert), array_keys($delete)));
$this->eventManager->dispatch('mageplaza_blog_post_change_categories', ['post' => $post, 'category_ids' => $categoryIds]);
}
if (!empty($insert) || !empty($delete)) {
$post->setIsChangedCategoryList(true);
$categoryIds = array_keys($insert + $delete);
$post->setAffectedCategoryIds($categoryIds);
}
return $this;
}
