Sling Model 404 Status with 404.jsp

Question

Hello,I am trying to get my SlingModel to return status of 404... which is possible, but then I would also like my sling model to push the user to the/libs/sling/servlet/errorhandler/404.jsp page which I am expecting:Cannot serve request to /content/my-site.home in BundledScriptServlet (/libs/sling/servlet/errorhandler/404.jsp) How can I do this?

EstebanBustamante · Accepted Answer

For example, the page is requesting for ?currentPage... if this param does not exists, then we would like to show the 404 page immediately.

You are supposed to guarantee that your models won't throw any error of that type. There are a lot of things you can do to achieve such as:
- Use @optional annotations,

- validate null pointer exceptions

- use try/catch blocks,

- and most important write JUnit test

EstebanBustamante · Answer

The Sling Model by definition is not meant to be accessed by a user but for an OSGI component (1), so conceptually it is wrong to set 400 status a slingModel and the use case you are trying to achieve it is not correct conceptually.

If you need to achieve such a thing use a Servlet instead, there, you can set the status (as shown below) and handle easily the error page.

response.setStatus(400)

For more info about how to handle error pages, you can read this: https://blog.3sharecorp.com/error-handling-in-aem

(1) https://sling.apache.org/documentation/bundles/models.html

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