August 2016
Beginner to intermediate
665 pages
14h 11m
English
Content preview from Go: Building Web Applications
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Handling 404s
A very obvious problem with our preceding code is that it does not handle a scenario wherein an invalid ID (or GUID) is requested.
As it is, a request to, say, /page/999 will just result in a blank page for the user and in the background a Couldn't get page! message, as shown in the following screenshot:
Resolving this is pretty simple by passing proper errors. Now, in the previous chapter we explored custom 404 pages and you can certainly implement one of those here, but the easiest way is to just return an HTTP status code when a post cannot be found and allow the browser to handle the presentation.
In our preceding code, we have an ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.