1 00:00:01,010 --> 00:00:03,970 ‫All right, and now just to finish this part, 2 00:00:03,970 --> 00:00:07,183 ‫let's create some factories for getting documents. 3 00:00:08,740 --> 00:00:11,963 ‫And let's start with getOne here, okay? 4 00:00:12,910 --> 00:00:17,910 ‫Exports.getOne, but this one is actually a bit trickier, 5 00:00:18,580 --> 00:00:20,690 ‫and that's because we have a populate 6 00:00:20,690 --> 00:00:22,710 ‫in the getTour handler. 7 00:00:22,710 --> 00:00:24,803 ‫So, let's take a look at that. 8 00:00:25,900 --> 00:00:30,090 ‫So, right here, in this one, we have this populate here, 9 00:00:30,090 --> 00:00:32,570 ‫which is different from all the other get handlers 10 00:00:32,570 --> 00:00:35,220 ‫in the other resources, right? 11 00:00:35,220 --> 00:00:37,620 ‫But, well, this is not really a problem 12 00:00:37,620 --> 00:00:40,670 ‫because we will simply allow ourselves to pass in 13 00:00:40,670 --> 00:00:45,670 ‫a populate options object into our getOne function, okay? 14 00:00:48,030 --> 00:00:50,840 ‫So, instead of simply passing in the model, 15 00:00:50,840 --> 00:00:55,700 ‫we will also have populate, so options, all right. 16 00:00:57,890 --> 00:01:00,370 ‫And so, from here we will then return 17 00:01:00,370 --> 00:01:02,053 ‫the normal handler function. 18 00:01:03,360 --> 00:01:06,563 ‫So, let's go ahead and again copy all of this, 19 00:01:10,850 --> 00:01:11,683 ‫all right. 20 00:01:13,730 --> 00:01:15,330 ‫So, we don't need this one here. 21 00:01:17,690 --> 00:01:19,743 ‫Then here, as always, it is model, 22 00:01:23,140 --> 00:01:25,800 ‫and here it is doc. 23 00:01:25,800 --> 00:01:27,993 ‫Well, actually here, document, 24 00:01:30,520 --> 00:01:33,850 ‫and here, once again, data equal to doc. 25 00:01:33,850 --> 00:01:36,210 ‫Now, we also need to make some changes here now 26 00:01:36,210 --> 00:01:38,390 ‫because of this populate, 27 00:01:38,390 --> 00:01:41,610 ‫so basically, we will first create the query, 28 00:01:41,610 --> 00:01:44,950 ‫and then, if there is the populate options object, 29 00:01:44,950 --> 00:01:46,550 ‫we will then add that to the query, 30 00:01:46,550 --> 00:01:50,810 ‫and then by the end, await that query, okay? 31 00:01:50,810 --> 00:01:51,643 ‫Make sense? 32 00:01:53,390 --> 00:01:55,890 ‫So, let's translate what I just said. 33 00:01:55,890 --> 00:02:00,773 ‫So, the query is simply equal to Model.findById, 34 00:02:02,770 --> 00:02:04,993 ‫like this, right? 35 00:02:06,630 --> 00:02:10,980 ‫Then, if there is a populate options object, 36 00:02:10,980 --> 00:02:12,193 ‫well, then in that case, 37 00:02:13,420 --> 00:02:15,020 ‫query is gonna be 38 00:02:15,020 --> 00:02:20,020 ‫query.populate with the populate options, okay? 39 00:02:24,410 --> 00:02:27,370 ‫And then, finally we await our query, 40 00:02:27,370 --> 00:02:28,853 ‫and save it in the document. 41 00:02:30,010 --> 00:02:35,010 ‫So, await query just like this, all right. 42 00:02:36,210 --> 00:02:38,660 ‫And so, that's actually it. 43 00:02:38,660 --> 00:02:40,360 ‫So, this logic that we have here 44 00:02:40,360 --> 00:02:43,200 ‫with not awaiting the query right away, 45 00:02:43,200 --> 00:02:45,300 ‫but instead just saving it into a variable, 46 00:02:45,300 --> 00:02:48,220 ‫so that we can then, in the next step, manipulate it. 47 00:02:48,220 --> 00:02:50,770 ‫We actually already did this kind of stuff before 48 00:02:50,770 --> 00:02:54,020 ‫when we were building our API features, right? 49 00:02:54,020 --> 00:02:57,210 ‫So, only in the end, when the entire query is ready, 50 00:02:57,210 --> 00:03:00,563 ‫we will then await it and store it somewhere in a variable. 51 00:03:02,260 --> 00:03:06,600 ‫Now, let's go ahead and actually use this one everywhere, 52 00:03:06,600 --> 00:03:08,803 ‫starting of course with the Tour. 53 00:03:10,470 --> 00:03:12,170 ‫So, getTour will now be 54 00:03:13,670 --> 00:03:15,473 ‫factory.getOne, 55 00:03:18,260 --> 00:03:20,900 ‫and pass in the Tour 56 00:03:20,900 --> 00:03:24,440 ‫and populate options object, remember that? 57 00:03:24,440 --> 00:03:29,440 ‫And so, what we're gonna do is to say path and reviews. 58 00:03:31,590 --> 00:03:35,540 ‫Right, so remember that the path property is basically 59 00:03:35,540 --> 00:03:37,720 ‫the field that we want to populate, 60 00:03:37,720 --> 00:03:40,950 ‫and then we can also specify select, 61 00:03:40,950 --> 00:03:43,750 ‫so remember this one, where we specify 62 00:03:43,750 --> 00:03:47,770 ‫which of the fields we actually want to get, right? 63 00:03:47,770 --> 00:03:48,603 ‫But in this case, 64 00:03:48,603 --> 00:03:50,050 ‫we don't have any of that, 65 00:03:50,050 --> 00:03:51,900 ‫and so let's just leave it like this. 66 00:03:53,180 --> 00:03:57,723 ‫And now, we can actually go ahead and delete all of this. 67 00:03:58,910 --> 00:04:00,570 ‫So, great. 68 00:04:00,570 --> 00:04:03,473 ‫And, just to make sure, let's actually quickly test this. 69 00:04:06,200 --> 00:04:07,963 ‫So, we'll gt a certain Tour, 70 00:04:10,880 --> 00:04:12,630 ‫and, indeed, it still works. 71 00:04:12,630 --> 00:04:15,503 ‫Let's see if this one had some reviews. 72 00:04:16,630 --> 00:04:19,210 ‫Oh, yeah, actually it does, and you see 73 00:04:19,210 --> 00:04:22,993 ‫that the population process is also still working. 74 00:04:24,920 --> 00:04:28,177 ‫So, that was successful, I would say. 75 00:04:28,177 --> 00:04:30,870 ‫And so, now lets also use this getOne 76 00:04:30,870 --> 00:04:32,710 ‫in all the other resources. 77 00:04:32,710 --> 00:04:36,833 ‫So, the user controller here where we have, 78 00:04:38,200 --> 00:04:40,603 ‫let's see where it is, ah, down here. 79 00:04:43,760 --> 00:04:47,047 ‫So, let's say factory.getOne, 80 00:04:48,930 --> 00:04:52,290 ‫but only with the user model, 81 00:04:52,290 --> 00:04:54,343 ‫and no populate options object. 82 00:04:56,900 --> 00:04:58,740 ‫Okay, and since we're here, 83 00:04:58,740 --> 00:05:02,030 ‫let's actually just change the error message 84 00:05:02,030 --> 00:05:03,850 ‫here for create user, 85 00:05:03,850 --> 00:05:07,583 ‫so this route is not defined, it never will be, 86 00:05:08,980 --> 00:05:11,703 ‫and please use signup instead. 87 00:05:17,010 --> 00:05:19,110 ‫Next up, and finally, 88 00:05:19,110 --> 00:05:23,410 ‫the same thing for the reviews basically. 89 00:05:23,410 --> 00:05:25,063 ‫So, exports.getReview 90 00:05:29,018 --> 00:05:31,427 ‫is equal factory.getOne review, 91 00:05:35,450 --> 00:05:40,193 ‫and I think we don't have (mumbles) our routes just yet. 92 00:05:41,360 --> 00:05:46,357 ‫And, indeed, we don't, so adding this real quick here, 93 00:05:46,357 --> 00:05:49,107 ‫reviewController.getReview, okay? 94 00:05:54,300 --> 00:05:56,423 ‫Let's just quickly test this one as well, 95 00:05:58,870 --> 00:06:01,300 ‫just because I also want to then add it 96 00:06:01,300 --> 00:06:03,203 ‫here to Postman, okay? 97 00:06:04,950 --> 00:06:08,453 ‫So, just copying this one because it's similar, 98 00:06:10,560 --> 00:06:12,393 ‫and then, indeed, it is get. 99 00:06:15,300 --> 00:06:20,300 ‫And, yep, works perfectly fine, store it here in reviews, 100 00:06:23,730 --> 00:06:24,987 ‫and getReview. 101 00:06:28,258 --> 00:06:30,560 ‫All right, an now all that's missing is 102 00:06:30,560 --> 00:06:35,560 ‫basically a getAll factory function, right? 103 00:06:36,070 --> 00:06:37,320 ‫So, basically, to replace 104 00:06:39,200 --> 00:06:42,380 ‫this getAllTours, getAllUsers, 105 00:06:42,380 --> 00:06:46,003 ‫which we should also have somewhere here, 106 00:06:46,970 --> 00:06:50,530 ‫so getAllUsers, and also getAllReviews, 107 00:06:50,530 --> 00:06:53,540 ‫so let's again copy it here from the Tour controller 108 00:06:53,540 --> 00:06:56,380 ‫because actually this is the one that is really complete 109 00:06:56,380 --> 00:06:59,920 ‫because it has all these API features, 110 00:06:59,920 --> 00:07:03,390 ‫and so, after creating our getAll factory function, 111 00:07:03,390 --> 00:07:07,083 ‫all of the three resources will then get these API features. 112 00:07:09,299 --> 00:07:12,840 ‫So again, copying all of this, 113 00:07:15,230 --> 00:07:17,433 ‫exports.getAll, 114 00:07:24,630 --> 00:07:28,390 ‫and so now, we will actually have to require 115 00:07:28,390 --> 00:07:29,743 ‫these API features here, 116 00:07:31,690 --> 00:07:35,780 ‫and in fact we can actually remove it from here 117 00:07:35,780 --> 00:07:38,320 ‫because we will no longer need it 118 00:07:38,320 --> 00:07:43,277 ‫because we now transfer this to the handler factory, right? 119 00:07:45,360 --> 00:07:49,403 ‫Now, here all we need to do is then to replace, as always, 120 00:07:50,370 --> 00:07:53,243 ‫with model, and then here, 121 00:07:56,300 --> 00:07:58,703 ‫doc and data. 122 00:08:01,700 --> 00:08:03,253 ‫Now, okay, perfect. 123 00:08:07,480 --> 00:08:09,133 ‫So, let's see if this works, 124 00:08:13,947 --> 00:08:17,453 ‫getAll with Tour. 125 00:08:22,530 --> 00:08:25,530 ‫And now, I really want to see if this still works 126 00:08:25,530 --> 00:08:28,300 ‫with all these features, 127 00:08:28,300 --> 00:08:31,380 ‫and so it's here, getAll Tours, 128 00:08:31,380 --> 00:08:33,830 ‫and so, let's add our query string here, 129 00:08:33,830 --> 00:08:38,467 ‫and let's say duration greater or equal than let's say a 10, 130 00:08:43,040 --> 00:08:47,063 ‫and sort by price. 131 00:08:50,470 --> 00:08:53,133 ‫Okay, and so we get two results here. 132 00:08:56,170 --> 00:08:58,490 ‫Okay, it's not working. 133 00:08:58,490 --> 00:09:03,030 ‫Anyway, we get the two (chuckles) results here, 134 00:09:03,030 --> 00:09:06,290 ‫and they both have a duration greater than 10, 135 00:09:06,290 --> 00:09:09,360 ‫and the price is 1497, 136 00:09:09,360 --> 00:09:13,420 ‫and the second one is higher, okay? 137 00:09:13,420 --> 00:09:15,810 ‫Let's put it here like to seven, 138 00:09:15,810 --> 00:09:17,673 ‫so we get a bit more results. 139 00:09:19,949 --> 00:09:21,249 ‫Okay, and now we get five. 140 00:09:23,560 --> 00:09:27,480 ‫Okay, anyway, let's now do the same for the reviews 141 00:09:28,910 --> 00:09:32,440 ‫because I'm really excited to test out these API features 142 00:09:32,440 --> 00:09:34,350 ‫on the reviews as well. 143 00:09:34,350 --> 00:09:36,510 ‫Now, one problem that we have here is 144 00:09:36,510 --> 00:09:39,740 ‫that this route handler actually has these two lines of code 145 00:09:40,706 --> 00:09:44,610 ‫that all the other getAll handlers do not have, okay? 146 00:09:44,610 --> 00:09:47,730 ‫But, what we're going to do here is to simply copy this code 147 00:09:47,730 --> 00:09:50,730 ‫into our handler factory as well, okay? 148 00:09:50,730 --> 00:09:52,150 ‫That's kind of a hack 149 00:09:52,150 --> 00:09:56,040 ‫because we really only need this one for getAll reviews, 150 00:09:56,040 --> 00:09:59,210 ‫but to get around this would be a bit too much work 151 00:09:59,210 --> 00:10:02,500 ‫here in this situation, and once more, 152 00:10:02,500 --> 00:10:05,623 ‫I simply want to keep it simple here, all right. 153 00:10:07,010 --> 00:10:08,593 ‫So, let's copy this here, 154 00:10:10,530 --> 00:10:15,150 ‫and I'm adding a comment here to allow 155 00:10:16,500 --> 00:10:21,500 ‫for nested getReviews on Tour, okay? 156 00:10:24,980 --> 00:10:29,533 ‫And so this filter, we will then also pass it in here, okay? 157 00:10:31,260 --> 00:10:33,363 ‫So again, this is a small hack, 158 00:10:35,400 --> 00:10:37,460 ‫but I'm gonna leave it here like this 159 00:10:37,460 --> 00:10:41,770 ‫because I think it is reasonable, all right. 160 00:10:41,770 --> 00:10:44,223 ‫Anyway, let's now get rid of this, 161 00:10:45,260 --> 00:10:48,373 ‫so factory.getAll and review, okay? 162 00:10:54,476 --> 00:10:57,493 ‫Let's actually put this down here next to all the others. 163 00:11:02,430 --> 00:11:03,430 ‫And now, as you see, 164 00:11:03,430 --> 00:11:07,340 ‫we actually do not even need this catchAsync here anymore, 165 00:11:07,340 --> 00:11:09,200 ‫so I'm gonna comment it out here 166 00:11:09,200 --> 00:11:12,300 ‫because, who knows, maybe in the future we're gonna need it 167 00:11:12,300 --> 00:11:15,523 ‫for some other Middleware function here, all right. 168 00:11:16,870 --> 00:11:18,660 ‫So, that looks nice and clean, 169 00:11:18,660 --> 00:11:21,783 ‫and let's now test out the getAll reviews. 170 00:11:23,420 --> 00:11:28,420 ‫All right, so let's actually just save changes here as well. 171 00:11:30,240 --> 00:11:32,310 ‫These ones we don't need, 172 00:11:32,310 --> 00:11:36,143 ‫but I actually want to get all the reviews. 173 00:11:37,530 --> 00:11:39,743 ‫So, right now we have four reviews, 174 00:11:40,980 --> 00:11:43,430 ‫and so let's now try to filter for reviews 175 00:11:43,430 --> 00:11:46,853 ‫only with a rating of four, let's say. 176 00:11:48,860 --> 00:11:53,860 ‫So, query string, rating equal four. 177 00:11:57,820 --> 00:12:00,170 ‫Oh, and it actually works, 178 00:12:00,170 --> 00:12:02,850 ‫so nice, that's really nice. 179 00:12:02,850 --> 00:12:06,780 ‫So, just like this, we get access to all these API features 180 00:12:06,780 --> 00:12:11,780 ‫like filtering, sorting, pagination, and all that good stuff 181 00:12:11,810 --> 00:12:13,988 ‫that we implemented (chuckles) 182 00:12:13,988 --> 00:12:15,890 ‫a long time ago in the course, right? 183 00:12:15,890 --> 00:12:17,380 ‫And, I also want to make sure 184 00:12:17,380 --> 00:12:21,423 ‫that this getAll reviews on Tour also still works. 185 00:12:22,300 --> 00:12:24,120 ‫So, let's check that, 186 00:12:24,120 --> 00:12:26,893 ‫and, yeah, you see that it actually does. 187 00:12:28,050 --> 00:12:30,380 ‫So, the Tour ID that we have here is 188 00:12:30,380 --> 00:12:34,490 ‫exactly the one right here and right here. 189 00:12:34,490 --> 00:12:36,840 ‫So, that one is also still working, 190 00:12:36,840 --> 00:12:39,580 ‫and so let's finally also use getAll 191 00:12:39,580 --> 00:12:44,060 ‫for the user controller, all right. 192 00:12:44,060 --> 00:12:46,733 ‫So, basically replacing simply this, 193 00:12:47,760 --> 00:12:52,760 ‫so factory.getAll user, all right. 194 00:12:55,180 --> 00:12:57,174 ‫And, let's actually put this one 195 00:12:57,174 --> 00:13:01,483 ‫here close to the other ones, all right. 196 00:13:04,960 --> 00:13:06,910 ‫And, then this one as well, 197 00:13:06,910 --> 00:13:09,650 ‫so basically having all of these ones generated 198 00:13:09,650 --> 00:13:11,590 ‫by factory functions together, 199 00:13:11,590 --> 00:13:14,383 ‫and then all the others simply above them. 200 00:13:15,800 --> 00:13:18,580 ‫All right, let's do the same here, 201 00:13:18,580 --> 00:13:20,290 ‫this one is already nice and clean, 202 00:13:20,290 --> 00:13:23,153 ‫and the same for the Tour controller, 203 00:13:24,170 --> 00:13:25,620 ‫so what else do we have here? 204 00:13:27,430 --> 00:13:29,263 ‫This one we can get rid of, 205 00:13:30,690 --> 00:13:34,000 ‫and, okay, I think it looks nice like this. 206 00:13:34,000 --> 00:13:37,150 ‫Again, we can comment out this piece of code 207 00:13:37,150 --> 00:13:40,410 ‫because, for now at least, we don't need it anymore. 208 00:13:40,410 --> 00:13:44,623 ‫And so, just to test it again here with the users, 209 00:13:45,640 --> 00:13:47,423 ‫let's get all of them together, 210 00:13:48,890 --> 00:13:50,973 ‫and, indeed, here they are. 211 00:13:53,320 --> 00:13:55,960 ‫We can now also say that we only want the ones 212 00:13:55,960 --> 00:13:58,873 ‫with the role of user, 213 00:14:00,490 --> 00:14:03,760 ‫and, indeed, that works as well. 214 00:14:03,760 --> 00:14:07,500 ‫Great, and that actually wraps up this part 215 00:14:07,500 --> 00:14:10,170 ‫of creating handler factory functions, 216 00:14:10,170 --> 00:14:14,300 ‫and this really was a huge step forwards in our project, 217 00:14:14,300 --> 00:14:16,030 ‫so remember that, a bit later, 218 00:14:16,030 --> 00:14:18,710 ‫we will also create a booking resource, 219 00:14:18,710 --> 00:14:22,080 ‫and so you see that probably we're gonna be able to create 220 00:14:22,080 --> 00:14:25,070 ‫the main API for these bookings 221 00:14:25,070 --> 00:14:27,310 ‫in like five seconds or something, 222 00:14:27,310 --> 00:14:32,310 ‫simply using these five factory functions, all right. 223 00:14:32,350 --> 00:14:34,750 ‫Anyway, good work, great job, 224 00:14:34,750 --> 00:14:36,683 ‫and I'll see you in the next one.