1 00:00:00,960 --> 00:00:03,330 Let's get started working on our get handler. 2 00:00:03,840 --> 00:00:08,010 We've already got some comments inside of you to guide us, but before we follow these comments too 3 00:00:08,010 --> 00:00:11,400 closely, there's just one quick thing I want to mention about these first two steps. 4 00:00:11,880 --> 00:00:15,510 We had said that we would first begin inside of here by checking to see if the file exists. 5 00:00:15,840 --> 00:00:20,430 But there's kind of a slightly better way or a slightly faster way we can actually implement this step 6 00:00:21,000 --> 00:00:24,390 rather than doing or starting off with a step to see if the file exists. 7 00:00:24,540 --> 00:00:32,009 We can instead just try to directly read the file then if that process throws an error. 8 00:00:33,200 --> 00:00:38,300 So we'll say if Reid throws and er we can inspect the ER. 9 00:00:39,270 --> 00:00:41,460 And see if it says that the file. 10 00:00:42,930 --> 00:00:47,670 Doesn't exist, and then obviously, if the file doesn't exist, we can create it and add in some default 11 00:00:47,670 --> 00:00:48,140 cells. 12 00:00:48,540 --> 00:00:53,250 The nice thing about this approach is that it allows us to just do one direct read to our hard drive 13 00:00:53,250 --> 00:00:55,290 to decide whether or not that file exists. 14 00:00:56,780 --> 00:00:58,630 So let's try taking a slightly different approach. 15 00:01:00,180 --> 00:01:03,180 All right, I'm going to first begin by setting up a tri catch statement. 16 00:01:08,190 --> 00:01:14,980 I'm going to inside of the tri statement itself, but in concert result is a weight first read file. 17 00:01:15,750 --> 00:01:18,180 I'm going to try to read the file at Opeth. 18 00:01:20,780 --> 00:01:23,530 And I'm going to specify the encoding of that file as well. 19 00:01:29,670 --> 00:01:34,770 So then if we get something out of that file, we successfully read some results or some value out of 20 00:01:34,770 --> 00:01:40,920 that, we can just go ahead and directly pass that in from Jason into an actual array of objects and 21 00:01:40,920 --> 00:01:42,770 then send that back inside of a response. 22 00:01:43,230 --> 00:01:43,980 So let's take care of that. 23 00:01:43,980 --> 00:01:46,380 First, we'll do a resource. 24 00:01:46,560 --> 00:01:50,130 Send Jason Pass with. 25 00:01:51,180 --> 00:01:51,750 Result. 26 00:01:54,930 --> 00:02:00,420 Otherwise, if we run into an error, let's go ahead and inspect the air and see if the air was thrown 27 00:02:00,450 --> 00:02:01,770 because the file doesn't exist. 28 00:02:02,190 --> 00:02:09,449 So for that, we're going to add in if error code equals equals equals E. no end. 29 00:02:10,169 --> 00:02:13,800 So this is how we know that an error is thrown because the file doesn't exist. 30 00:02:13,980 --> 00:02:19,830 We end up with a E no ent or which stands for error, no entity or that file does not exist. 31 00:02:20,630 --> 00:02:24,180 So if that is the case, then inside of here we can eventually add in some code. 32 00:02:26,980 --> 00:02:32,500 To create a file and add default cells. 33 00:02:33,940 --> 00:02:38,380 Otherwise, we can go ahead and just read through the air, because that means that we've got some air 34 00:02:38,380 --> 00:02:42,540 that we really did not anticipate, so we should probably throw it or something like that just to say, 35 00:02:42,540 --> 00:02:44,050 hey, something really went wrong here. 36 00:02:44,430 --> 00:02:46,000 In this case, I'll just read through the air. 37 00:02:49,250 --> 00:02:51,470 All right, I'm going to clean up all these extra comments down here. 38 00:02:53,780 --> 00:02:58,130 So this looks good for right now, we do, of course, have to add in some code right here to create 39 00:02:58,130 --> 00:02:59,840 that file and add in some default cells. 40 00:03:00,080 --> 00:03:01,520 We'll take care of that in just a moment. 41 00:03:01,970 --> 00:03:03,230 Right now, let's save this. 42 00:03:03,510 --> 00:03:08,270 We're going to go over to our REACT application in just a moment and start to add in some code to make 43 00:03:08,270 --> 00:03:10,850 use of these two different route handlers that we have now set up.