logic to block the unauthorized user

Question

hello
I have a table with the columns one, two and three. I am looking for logic for a page before it loads go and check if the person is in database, the home page should show up if not an error page should come up.

Shweta Lodha · Answer

shah awan Did you get your answer?

Wim Sturkenboom · Answer

The usual approach is to check if a user is logged in (based on a session variable) in the page load event. If not redirect to a login page (or an error page in your case) else show the page. In the login page you can validate (as indicated by Shweta) and set a session variable to indicate that the user is valid; if the user is valid you can redirect to the page where he/she came from.

Shweta Lodha · Answer

shah awan You can execute your validation logic on your login form's button click. In case of invalid login details you can redirect the user to error page.