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Redirection Headers in Node.js4:10 with Andrew Chalkley
Now we'll use the username to redirect to the correct location.
Now that we have the user name out of the post body, 0:00 let's investigate on how to redirect to the student's profile page. 0:02 So, if we go down to the post part of our home route, we can see that 0:07 we're just printing out the username to the response and we end the response. 0:11 Actually, what we want to do is use this username. 0:17 And add a slash in front of it and then redirect to that username. 0:21 So want to do something like this. 0:25 Redirect to slash chalkers slash whatever your username is. 0:29 So we need to figure out some headers on, and how will we need to do that? 0:34 So if we go to http 0:39 header fields. 0:44 And there's a list of HTTP header fields on Wikipedia so 0:49 let's take a look at the various different fields so. 0:54 We've done content type already and 0:57 we see how we can just change it to constant type and 1:02 then whate, whatever lets see if 1:09 there anything to do with a location. 1:13 [BLANK_AUDIO] 1:18 So here we go. 1:20 Location is used in redirection, or when new resource has been created. 1:22 So the location, and then the url. 1:28 So we can modify the headers, and send location to this. 1:31 Let's just click on this redirection and see what there is. 1:38 If you look here, this HTTP status code so let's have a look at these. 1:44 These 300 multiple choices as in different languages, 1:50 permanently moved, found or see other. 1:53 Forces a get request to a new URL even if the original request was a post. 1:57 So that's exactly what we're doing right now so instead of giving a 200 status 2:02 code, we want to give a 303 because we're doing a post, but 2:07 we want it to go to a get URL. 2:11 So. 2:15 We can do writehead and then 303, so instead of 200 saying okay, 2:17 we're saying 303 with going to say see other, 2:23 see another location, and remember, the writehead has 2:27 headers as a dictionary of a JSON object, so content type. 2:32 So instead of content type, we want to put in location down here, 2:37 so we do location and 2:43 then the URL we want it to go to. 2:48 Now we don't need to do the full URL, we don't need to do HTTP colon forward slash, 2:53 forward slash, whatever the workspace URL is slash. 2:57 chalkers. We can just do slash chalkers because 3:01 we're on the same domain, we're not redirecting it to another website or 3:04 anything like that, so if you were creating some sort of like URL shortener, 3:08 you'd probably want to put in the full URL there because it's 3:12 probably going off to an external site. 3:16 But because we're just dealing with a local site. 3:18 This would redirect it. 3:21 So in theory, this should work. 3:23 So save node app.js. 3:26 Click on preview. 3:34 And let's type in chalkers. 3:36 And hit search. 3:38 And it redirected to my page. 3:41 So let's click on search again, and try a different user. 3:43 Joykesten2'. 3:47 Oops, I actually put a li, an apostrophe at the end there, and 3:51 as you can see it's not found, so our error's working correctly. 3:54 But let's do it properly just to see. 3:58 That's another username. 4:00 And well, it worked as well. 4:04 So that's our app, up and running. 4:06
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