1 00:00:00,240 --> 00:00:05,190 All right, and once we're done with fundamentals, let's finally learn some cool new things as well. 2 00:00:05,700 --> 00:00:07,920 And first in line is not populated. 3 00:00:08,460 --> 00:00:15,870 And what's really cool about popularity method is that it allows us to reference documents in other 4 00:00:15,870 --> 00:00:16,410 collections. 5 00:00:16,800 --> 00:00:17,790 Why is that useful? 6 00:00:18,180 --> 00:00:26,040 Well, with the help of populate, we could get specific info about the product when requesting all 7 00:00:26,040 --> 00:00:26,550 reviews. 8 00:00:27,420 --> 00:00:35,670 So the moment when we get back all the reviews we can actually see user which references the user I.D. 9 00:00:36,030 --> 00:00:38,760 and the same goes for product. 10 00:00:39,510 --> 00:00:41,070 Now all is nice. 11 00:00:41,580 --> 00:00:46,140 But what if I want more info on the actual product? 12 00:00:46,950 --> 00:00:53,610 For example, I want name company and price and the way we set that up. 13 00:00:54,030 --> 00:00:57,450 First, we want to go back to all reviews. 14 00:00:57,870 --> 00:01:05,459 And then right after fine, just like with other methods, we just change it and go with dot and then 15 00:01:05,650 --> 00:01:08,970 bar blue light and learn instead of the object. 16 00:01:08,970 --> 00:01:10,920 We want to pass into two things. 17 00:01:11,400 --> 00:01:13,110 What we want to reference. 18 00:01:14,120 --> 00:01:18,530 I meant what properties we want to get, so here we go with baths. 19 00:01:19,040 --> 00:01:23,720 And of course, this needs to match whatever we have in the model. 20 00:01:24,020 --> 00:01:24,410 Correct. 21 00:01:24,800 --> 00:01:32,750 So if I take a look at the review model here, where is the product sitting right here? 22 00:01:33,230 --> 00:01:36,890 So I want to reference this model. 23 00:01:37,160 --> 00:01:45,170 And therefore, I go with Bath and we set it up as a product of one comma and then we go to select shown 24 00:01:45,170 --> 00:01:45,530 here. 25 00:01:45,710 --> 00:01:48,230 I want to say what properties I want to get. 26 00:01:48,800 --> 00:01:54,950 And of course, it does make sense to get the actual product properties you want to double check them. 27 00:01:55,280 --> 00:01:58,190 Go to the model and you'll be able to find them. 28 00:01:58,340 --> 00:01:59,840 In my case, what am I looking for? 29 00:02:00,080 --> 00:02:01,130 I want to go with name. 30 00:02:02,140 --> 00:02:02,980 One company. 31 00:02:04,100 --> 00:02:06,350 And also a price. 32 00:02:06,440 --> 00:02:07,820 Let's save it. 33 00:02:08,270 --> 00:02:12,500 Let's go back and then once we send it, check it out. 34 00:02:12,980 --> 00:02:18,870 Not only I get the I.D., but I also have name, price and company. 35 00:02:19,610 --> 00:02:21,620 And you probably have two questions. 36 00:02:21,860 --> 00:02:25,580 First, can we do the same thing with user? 37 00:02:25,940 --> 00:02:26,570 Yes, of course. 38 00:02:27,580 --> 00:02:28,430 Take this whole thing. 39 00:02:29,710 --> 00:02:37,990 And copy and paste instead of product for user, and my gosh, I'm going to go with just name. 40 00:02:38,380 --> 00:02:39,040 Let's save it. 41 00:02:39,580 --> 00:02:43,750 Send it online instead of just user I.D.. 42 00:02:44,170 --> 00:02:45,550 I also have the name. 43 00:02:46,060 --> 00:02:47,320 So in my case, I remove it. 44 00:02:47,620 --> 00:02:49,720 Let's keep in mind that you can keep it there. 45 00:02:50,020 --> 00:02:55,000 Second question Can you use it, for example, on getting all of you? 46 00:02:55,420 --> 00:02:55,870 Of course. 47 00:02:56,470 --> 00:02:57,160 Same deal. 48 00:02:57,400 --> 00:02:58,360 You already know the steps. 49 00:02:58,810 --> 00:03:01,720 You're the populate and you'll get the info.