Create a custom GraphQL urlResolver service
The Magento\UrlRewrite module converts URL rewrite requests to canonical URLs. As a result, your custom urlResolver module does not require its own class for performing these actions, but it must be able to save and delete entries in the url_rewritetable.
Create observers
You can use the Magento\CmsUrlRewrite\Observer\ProcessUrlRewriteSavingObserverclass as the basis for saving URL rewrites. For deleting entries, create a ProcessUrlRewriteDeleteObserver class similar to the following:
* Generate urls for UrlRewrite and save it in storage
*
* @param \Magento\Framework\Event\Observer $observer
* @return void
*/
public function execute(EventObserver $observer)
{
/** @var \Magento\MyModule\Model\Page $myEntityPage */
$page = $observer->getEvent()->getObject();
if ($page->isDeleted()) {
$this->urlPersist->deleteByData(
[
UrlRewrite::ENTITY_ID => $page->getId(),
UrlRewrite::ENTITY_TYPE => MyEntityPageUrlRewriteGenerator::ENTITY_TYPE,
]
);
}
}
Configure the custom module
Update the graphql.xml and events.xml file in your module’s etc directory to configure your custom GraphQL urlResolver service:
Add lines similar to the following in your module’s graphql.xml file to define the enumeration. The UrlRewriteGraphQl module defines UrlRewriteEntityTypeEnum.
pre id="query">
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_GraphQl:etc/graphql.xsd">
<type xsi:type="Enum" name="UrlRewriteEntityTypeEnum">
<item name="my_entity">MY_ENTITY</item>
</type>
</config>
Define two events similar to the following in your module’s events.xml file.
<event name="mymodule_page_save_after">
<observer name="process_url_rewrite_saving" instance="Magento\MyModuleRewrite\Observer\ProcessUrlRewriteSavingObserver" />
</event>
<event name="mymodule_page_delete_after">
<observer name="process_url_rewrite_delete" instance="Magento\MyModuleRewrite\Observer\ProcessUrlRewriteDeleteObserver" />
</event>