How to catch an error in Joomla 3.5 (alternative to JError)

Question

I've read the Exception methods in order to replace the deprecated JError, but I can't solve the following problem:

I have a plugin that redirects an user to a login page in case he/she tries to access a page that is for a logged-in user (instead of getting the message "You are not authorised to view this resource.").

It used to work when JError was still around (before J3), the code was like this:

Error::setErrorHandling(E_ERROR, 'callback', array(
    'plgSystemCustom_Redirects',
    'handleError'
));

And in the rest of the script I had the handleError function.

My doubt here is (unlike any other examples that I've read) how to catch the error (I'm not able to issue a try); in other words, how to replace the deprecated code with something that works in Joomla 3.5?

Answer 1

There is no alternative to JError and JException classes, Joomla development decided to remove those classes and use php exception instead. Take a look at the deprecated JError table.

So on my opinion you have two possible ways:

• Rewrite your plugin with php exception handler
• Rethink your plugin using JLog class

Here are some interesting discussions and resources on this topic:

• What to use instead of JError?
• Exception vs. JException
• Exceptions and Logging

Hope this will help you.

Answer 2

Since Joomla 2.5 and in Joomla 3.5, you can use the mothods descripted in https://docs.joomla.org/Auto_redirect_guests_to_login to manage your feature, there is no need to add a plugin! I use this at my site https://www.loytec.com, see Menu Support>ProductReturn(RMA) https://www.loytec.com/support-en/rma with Joomla Core tools only.