WEBVTT 00:03.700 --> 00:08.530 Hey did everyone this year and this is a bit of an interesting one not interesting I would say I would 00:08.620 --> 00:13.360 rather say understanding the flow of the application and that's going to be a simple exercise for this 00:13.360 --> 00:13.780 one. 00:13.780 --> 00:15.040 So let's start one by one. 00:15.040 --> 00:18.880 First, we are going to work on these admin dots because we have already worked on three ones. 00:18.880 --> 00:23.020 Slash admin slash orders will give you all the orders available on the platform. 00:23.020 --> 00:26.830 I think anybody can code this, especially if you have been watching the course so far. 00:26.830 --> 00:32.380 I think that should be the easiest one of all and probably you can do in a little bit half sleepy mode. 00:32.380 --> 00:37.390 So anyways, let's go into the controller order controller and let's go ahead and design some of the 00:37.390 --> 00:38.080 admin routes. 00:38.080 --> 00:43.030 Let's copy this, shrink this guy and get some space. 00:43.240 --> 00:46.090 And this one is going to be admin. 00:46.090 --> 00:50.380 Get, get all orders. 00:51.200 --> 00:52.040 Orders. 00:52.070 --> 00:52.730 There we go. 00:52.880 --> 00:54.830 So how we're going to go ahead and do this one. 00:54.830 --> 00:58.650 This one, we are going to go ahead and call this one as orders, because all orders are coming in. 00:58.670 --> 01:03.830 This is going to be in L.A. and all we got to do is pass on nothing inside the find. 01:03.830 --> 01:06.350 And in fact, we don't need to even pass on empty parenthesis. 01:06.350 --> 01:10.400 We can just go ahead and say like this, and then we go, the model is going to fill up this orders 01:10.400 --> 01:12.800 with an array which is containing everything up there. 01:12.980 --> 01:14.570 Now that's all what we're going to do. 01:14.570 --> 01:19.210 We don't even need to check because if the orders are not coming in, it's going to be an empty array. 01:19.220 --> 01:22.570 There is nothing inside that to be worried about and that's it. 01:22.580 --> 01:26.750 We are going to go ahead and throw this orders, throw this orders like this. 01:26.750 --> 01:27.890 And there we go. 01:28.430 --> 01:29.570 And that's pretty much it. 01:29.570 --> 01:34.070 Don't need to do anything else in case you want to do more of the crafty stuff in that. 01:34.220 --> 01:34.910 You can do that. 01:34.910 --> 01:36.740 But I don't think that anything is there. 01:36.770 --> 01:39.980 Let's go ahead and copy this one and throw that into a route as well. 01:39.980 --> 01:42.950 We can close this abacus and this order route. 01:43.070 --> 01:46.130 So we're going to first bring in this is, of course, an admin route. 01:46.130 --> 01:49.700 So let's go ahead and make a copy of this one, have a enter. 01:49.700 --> 01:51.860 And these are all the route for admin. 01:52.520 --> 02:00.470 So admin route says, hey, slash admin slash orders is going to go ahead and give you this. 02:00.470 --> 02:02.540 We need to bring in some of the custom role as well. 02:02.540 --> 02:04.670 So copy that and bring in a custom role. 02:05.090 --> 02:05.660 There we go. 02:05.660 --> 02:10.880 The custom role is going to be of only allowed admin in case you want to do the same things for manager 02:10.880 --> 02:11.300 as well. 02:11.330 --> 02:12.380 Please go ahead and do this. 02:12.380 --> 02:14.150 Or maybe you have a sales manager role. 02:14.180 --> 02:15.800 You can go ahead and do that also. 02:16.130 --> 02:17.240 Okay, this is all good. 02:17.240 --> 02:20.210 Now let's work onto something interesting, which is order controller. 02:20.210 --> 02:23.720 Let's go ahead and grab a copy of this one again, another admin route. 02:24.020 --> 02:26.300 Now this one is going to be update the order. 02:26.300 --> 02:28.160 This is going to be a little bit interesting. 02:28.160 --> 02:33.260 So update admin, update order. 02:33.260 --> 02:36.830 And again, this can be a little bit casing. 02:36.830 --> 02:37.430 There we go. 02:37.790 --> 02:39.290 Now how this is going to work. 02:39.290 --> 02:42.290 First, let's analyze that, how the order information is coming in. 02:42.290 --> 02:44.210 So this is my order, which is my order. 02:44.210 --> 02:45.830 So I grabbed this one order. 02:45.830 --> 02:51.380 So now just imagine and try to think that how much information or how much control you want to give 02:51.380 --> 02:52.970 the admin to update the things. 02:52.970 --> 02:54.800 Now there is no wrong or right. 02:54.800 --> 02:58.700 There is always a need of application, maybe the need of the client itself. 02:58.700 --> 03:03.470 So in this case shipping info, if there is any mistakenly manipulation in that, that's not good. 03:03.470 --> 03:06.620 User will not be able to ship that thing payment info. 03:06.620 --> 03:08.150 Obviously this should be all readable. 03:08.150 --> 03:11.180 Field shouldn't be allowed admin to be editable users. 03:11.180 --> 03:15.200 We probably arguably can give some control to change the users. 03:15.200 --> 03:18.740 Maybe use that as requested to change their name or email or something like that. 03:18.740 --> 03:24.170 But I think this is not touch should not be touched inside the order item also user as selected and 03:24.170 --> 03:25.190 give us all the data. 03:25.190 --> 03:26.930 So we shouldn't be touching that either. 03:26.930 --> 03:29.930 But in case you want to manipulate that, you can later on give that. 03:29.930 --> 03:34.490 Now in this case also the tags and for shipping info total amount shouldn't be changed at all. 03:34.520 --> 03:37.070 The only thing that we are going to change is the order status. 03:37.070 --> 03:40.550 So if this comes up into the body, I'm going to go ahead and change that. 03:40.550 --> 03:45.860 And we have a particular fields that processing to delivered or something like that that can come in. 03:45.860 --> 03:49.300 So that's all the information we are expecting into the body itself. 03:49.460 --> 03:55.670 First thing is user will be selecting a path of admin slash order slash ID just like we saw up here. 03:55.670 --> 03:57.830 So admin slash order slash ID. 03:57.860 --> 03:59.720 So we'll be working on this one. 04:00.410 --> 04:05.270 So the user will be sending me the order ID and in this case I expect that user will be sending me the 04:05.270 --> 04:09.710 ID that I should be updating and all the rest of the information will come up in the body itself. 04:09.710 --> 04:11.720 So let's go ahead and first find that. 04:11.720 --> 04:15.290 So we need to find a particular order in this case. 04:15.290 --> 04:16.490 So let's go ahead and see that. 04:16.490 --> 04:17.570 How we can do that. 04:17.600 --> 04:23.630 We'll be simply finding that by find, by ID and let's go ahead and grab this one. 04:23.630 --> 04:27.350 This one is going to say simply request dot params ID. 04:27.350 --> 04:29.390 This might be so much familiar to you by now. 04:29.420 --> 04:33.890 This is not going to be orders, but rather a simple order that we are trying to manipulate. 04:33.980 --> 04:38.480 Now, once this order has come to me, I want to update certain fields of it. 04:38.480 --> 04:43.310 So I'm going to go ahead and simply say that, hey, let's go ahead and order update the order status. 04:43.310 --> 04:49.670 So go into the models and this is the order status that we are expecting to change. 04:49.670 --> 04:52.580 So this order status and this will be coming up in the body. 04:52.580 --> 04:55.160 So request dot body, dot order status. 04:55.160 --> 04:59.120 So whatever the order status you are sending me in the body, I'm allowing you to change that. 04:59.240 --> 05:04.580 Now, once I have changed this one, I have to actually update this, this one here. 05:04.580 --> 05:05.930 So this is delivered at. 05:05.930 --> 05:12.320 So if the requested burrito status is delivered, then only we have to manipulate. 05:12.320 --> 05:17.000 So what we can do is once the order is delivered, I don't think anybody is going to come in and send 05:17.000 --> 05:22.280 and going to say that, hey, just undelivered it because you cannot, to be honest, you have to place 05:22.280 --> 05:22.940 another order. 05:22.940 --> 05:27.170 So let's go ahead and check in the request body if this one is coming in as delivered. 05:27.710 --> 05:32.690 So if it is already being delivered, if this part, then we are going to not allow to change this one. 05:32.690 --> 05:34.340 So let's go ahead and do that again. 05:34.340 --> 05:35.600 This is all the user flow. 05:35.600 --> 05:37.340 How would you like to go ahead and do that? 05:37.340 --> 05:42.680 So let's take this order and we are going to go ahead and say, hey, there is a order status, so let's 05:42.680 --> 05:45.170 go ahead and check what is the existing status. 05:45.530 --> 05:49.970 If my orders existing status is actually equal to delivered. 05:51.620 --> 05:53.570 Delivered and did I wrote it correct? 05:53.570 --> 05:54.470 Hopefully. 05:54.500 --> 05:55.500 Yes. 05:55.520 --> 05:56.120 Nope. 05:56.930 --> 05:58.250 Delivered. 05:59.240 --> 06:00.170 There we go. 06:00.200 --> 06:03.860 Now, if this is delivered, we are going to simply return a simple response here. 06:03.860 --> 06:05.930 So we're going to go ahead and say, hey, return. 06:06.080 --> 06:11.780 Let's go ahead and wrap it up in the next new custom error. 06:11.870 --> 06:23.420 And the customer is going say order is already marked for delivered and we're going to go ahead and 06:23.420 --> 06:24.540 say 401. 06:24.560 --> 06:25.280 There we go. 06:25.640 --> 06:31.640 So now, according to this flow, we are allowing user to only send one thing which is delivered when 06:31.640 --> 06:33.680 they use when the data is not marked. 06:33.770 --> 06:39.290 Again, you can just put any little bit more of the clauses and can say that, hey, if the order is 06:39.290 --> 06:42.830 marked as processing, then we are going to only allow or something like that. 06:42.830 --> 06:45.140 It's up to you how you're going to process that. 06:45.140 --> 06:51.230 So we are going to expect that if anything else comes up other than delivered, maybe on the route processing 06:51.500 --> 06:55.340 out for shipping for all these cases, we are allowing user to update the status. 06:55.760 --> 06:55.940 Okay. 06:56.060 --> 06:56.960 So this is all done. 06:56.960 --> 07:01.850 Only thing that we have to do after that is let's go ahead and say, hey, this order needs to be saved 07:01.850 --> 07:03.560 now, so order, dot, save. 07:04.250 --> 07:04.960 There we go. 07:04.970 --> 07:06.380 So we have saved the order. 07:06.380 --> 07:07.500 Order was marked to ship. 07:07.520 --> 07:12.650 But if you remember, there was a classic requirement from the client side that, hey, please, I want 07:12.650 --> 07:14.360 to manage my inventory as well. 07:14.360 --> 07:16.120 So stock also needs to be managed. 07:16.130 --> 07:19.250 Now, if the if this was marked as delivered. 07:19.250 --> 07:20.960 So let's just say this comes up as a delivery. 07:20.960 --> 07:24.500 If the order was delivered, then we have to update the stock as well. 07:24.500 --> 07:29.090 So how we are going to update the stock, we are going to go ahead and create a simple method for that 07:29.090 --> 07:32.900 because this updation is happening into some another model itself. 07:32.900 --> 07:34.280 So let's go ahead and work with that. 07:34.430 --> 07:38.960 So this one is obviously going to be simple async because that's how it is going to be. 07:38.960 --> 07:43.730 You can create a simple arrow function or you can just go ahead and go classic like this. 07:43.730 --> 07:50.030 And we are going to go ahead and say update product stock just like that and just like that. 07:50.030 --> 07:50.870 And there we go. 07:50.900 --> 07:55.220 Now, in this one, we expect that you pass me on the product ID, so let's go ahead and say you give 07:55.220 --> 07:58.340 me the product ID and you also give me the quantity. 07:58.340 --> 08:01.070 Now, the thing is that how you're going to give me the quantity? 08:01.070 --> 08:02.480 That is also a question. 08:02.570 --> 08:05.510 So the quantity as you notice inside this order item. 08:05.510 --> 08:08.540 So order has this order items, it has this quantity field. 08:08.540 --> 08:11.300 So whatever the quantity is, I just have to update that. 08:11.600 --> 08:18.320 And if you look into the models of the product itself, I go ahead and see that I have a field here 08:18.890 --> 08:22.580 which is I don't have a stock field. 08:23.840 --> 08:24.200 Okay? 08:24.200 --> 08:28.160 So just find out that we don't even have the stock field up here. 08:28.160 --> 08:29.780 So we need to actually keep this one. 08:29.780 --> 08:33.680 So this was already mentioned in the requirement that I also want to add new product and keep a check 08:33.680 --> 08:34.280 on the stock. 08:34.280 --> 08:35.960 So we need to now inject this one. 08:35.960 --> 08:40.220 And this is why I love MongoDB, that I can go ahead and manipulate the models and it's not going to 08:40.220 --> 08:43.130 break my existing of the model I can go ahead and work on with that. 08:43.130 --> 08:43.910 So no big deal. 08:43.910 --> 08:49.160 We have this brand, brand ratings, a number of reviews and all of these things. 08:49.160 --> 08:51.590 Let's go ahead and add a stock update up here. 08:51.590 --> 08:54.410 So let's go ahead and add another field, which is going to be simple stock. 08:54.410 --> 08:56.690 We have done this many times, so shouldn't be a big deal. 08:56.720 --> 08:58.850 Let's go ahead and add a comma here as well. 08:58.850 --> 09:00.650 So the stock is pretty easy. 09:00.650 --> 09:04.220 We are going to go ahead and say this is going to be of stock is usually numbers. 09:04.220 --> 09:09.290 So we're going to go ahead and say, hey, this is a type of number and we don't need to provide any 09:09.290 --> 09:09.950 default value. 09:09.950 --> 09:13.940 We are going to go ahead and mark this one as required and let's go ahead and use an array. 09:13.940 --> 09:22.190 So required is true and we're going to provide a message as well that please add a number in stock. 09:23.510 --> 09:27.830 So really you can use a better one than this one and that's pretty much it. 09:27.830 --> 09:31.130 I'm going to go ahead and save this one and that's it. 09:31.130 --> 09:36.260 Now, I have a stock in the field of this number and I have already discussed that how you're going 09:36.260 --> 09:38.840 to grab the quantity and the product ID itself. 09:38.840 --> 09:45.500 So assuming that the guy who is actually working on this one has given me this product ID and this one 09:45.500 --> 09:49.850 again, both of the fields, just to remind you again, both of the fields are available here in the 09:49.850 --> 09:50.480 order items. 09:50.480 --> 09:53.600 So product is here, this is product ID and this is the quantity. 09:53.600 --> 09:58.850 I just have to subtract, subtract these two things by using these two things into the product model. 09:58.850 --> 10:00.560 So let's go ahead and grab this. 10:00.560 --> 10:03.260 So first, we need to find the product, how we're going to do that. 10:03.260 --> 10:07.820 We have this product, how to find a product by the ID pretty much couldn't be much more simpler than 10:07.820 --> 10:08.390 this one. 10:08.390 --> 10:13.100 So find buy ID and we are going to just go ahead and pass on this product ID. 10:13.850 --> 10:14.570 There we go. 10:14.570 --> 10:16.550 Now we need to hold this one into available. 10:16.550 --> 10:18.770 So let's go ahead and call this one as product. 10:18.770 --> 10:19.580 There we go. 10:19.580 --> 10:23.000 And this is a database operation, so this is going to take some time. 10:23.120 --> 10:23.590 Okay. 10:24.080 --> 10:28.070 Now, the only thing we have to do is find the stock in the product. 10:28.070 --> 10:34.670 So we can do that by simply saying a product dot stock and we need to subtract that. 10:34.670 --> 10:36.290 How we're going to subtract that. 10:36.320 --> 10:41.930 Let's go ahead and see that whatever the existing product is and we're going to go ahead and product 10:41.930 --> 10:47.000 DOT stock and we are going to subtract the quantity, whatever you are passing up to me. 10:47.330 --> 10:50.450 Now, remember here, we haven't done any check. 10:50.720 --> 10:54.890 Whether the product, stock and quantity are matching or not because we should be doing it. 10:54.890 --> 10:58.910 Rather, in case this would be an application where I would be working for six months, I would love 10:58.910 --> 11:04.160 to put a check here that while placing the order I should be first checking that the whether the product 11:04.160 --> 11:05.750 is actually in the stock or not. 11:05.750 --> 11:09.590 I should be checking that, but I cannot go for six month long in this course. 11:09.590 --> 11:11.510 So that is why I'm just sharing these ideas. 11:11.510 --> 11:14.120 These are something that you should be doing on your own. 11:14.390 --> 11:15.680 Let's go ahead and save this one. 11:15.680 --> 11:19.610 So we're going to go ahead and say product, dot save. 11:19.640 --> 11:20.480 There we go. 11:20.480 --> 11:28.730 And once I'm having this save, I'm going to go ahead and save validate before save because I don't 11:28.730 --> 11:31.400 want to turn on any of the flags like required or anything. 11:31.400 --> 11:34.340 So let's turn this off and this is going to take some time. 11:34.340 --> 11:36.050 So let's go ahead and await this one. 11:37.220 --> 11:39.410 Copy this and paste it up here. 11:39.410 --> 11:40.070 There we go. 11:40.340 --> 11:40.620 Okay. 11:40.640 --> 11:45.230 Now, as soon as you are going to call this method with the given all these things, this should be 11:45.230 --> 11:46.130 all good now. 11:46.580 --> 11:50.870 Okay, now let's come back up here before we hit save on this order. 11:50.870 --> 11:53.180 And this order is marked as delivered. 11:53.180 --> 11:54.980 Let's go ahead and use this method. 11:54.980 --> 11:56.420 So let's go ahead and do this. 11:56.420 --> 12:01.820 And we have to do this for every single of the item, because right now here in the order items, remember 12:01.820 --> 12:04.460 we are having just one product, but there can be more product. 12:04.610 --> 12:05.860 That's why this is Eddi. 12:05.870 --> 12:07.940 So let's go ahead and use this order item. 12:07.940 --> 12:13.370 So before I save this one, I'm going to go ahead and say, hey, order dot order items. 12:13.370 --> 12:15.230 Remember, there can be more up here. 12:15.230 --> 12:17.570 We're going to use a classic for each loop. 12:17.570 --> 12:20.450 This for each loop is going to give you each and every item. 12:20.450 --> 12:23.330 So this is going to be called as a product. 12:23.330 --> 12:29.000 So let's call this one a simple prod for the product in the items and for each of the product. 12:29.000 --> 12:33.440 Now, again, this is a database operation, so this might take some time here as well. 12:33.440 --> 12:36.950 So this is going to be a simple a sync for each of the product. 12:36.950 --> 12:38.540 Let's go ahead and do something. 12:38.540 --> 12:40.280 What is the something that you want to do? 12:40.310 --> 12:43.070 I simply want to go ahead and update my stock. 12:43.070 --> 12:45.620 So I'm going to go ahead and say update product stock. 12:45.620 --> 12:46.370 There we go. 12:46.760 --> 12:49.340 Now in the update, product stock, how we are going to work. 12:49.340 --> 12:52.700 First, give me the product ID so how you can go ahead and do this one. 12:52.700 --> 12:59.450 So this product now remember, I am inside this particular field so I can go ahead and say prod dot 12:59.450 --> 13:04.820 product to give the product ID and I can go ahead and say product quantity to give this quantity. 13:04.820 --> 13:06.260 So let's go ahead and do that. 13:06.260 --> 13:11.150 So finding this, I can go ahead and say prod dot product. 13:11.390 --> 13:17.180 This is the product ID and I can go ahead and say prod dot quantity. 13:17.690 --> 13:23.060 So product dot product will give me the ID and product quantity will give me the quantity of that. 13:23.060 --> 13:29.030 And since this is an async function itself, I'm going to go ahead and wait for this one to process 13:29.030 --> 13:30.890 all the things that it wants to do. 13:31.340 --> 13:32.600 And this is all done. 13:32.600 --> 13:33.650 Let's save this one. 13:33.650 --> 13:37.790 This obviously is going to take some time because it's going into the model and stuff and now this is 13:37.790 --> 13:38.330 saving. 13:38.330 --> 13:41.600 Now, again, as we discussed, a whole lot of things can be done. 13:41.600 --> 13:46.910 But again, I don't have six months or a year to design this entire application while placing or updating 13:46.910 --> 13:47.180 the order. 13:47.180 --> 13:51.890 We can check for each of the item, whether it is delivered, whether it is a processing on the way 13:51.890 --> 13:54.020 and all of that and do further down these things. 13:54.020 --> 13:58.700 We can also check while creating the order itself whether the stock is in the quantity or something, 13:58.700 --> 14:02.720 because this was obviously one of the requirement from the clients and we have seen that how we can 14:02.720 --> 14:05.480 go back and update some of the stocks and something like this. 14:05.480 --> 14:08.750 So I'm going to go ahead and put up a comment here as well. 14:09.620 --> 14:14.120 Updated in order. 14:15.930 --> 14:17.940 Videos later. 14:17.940 --> 14:18.810 So there we go. 14:18.810 --> 14:20.940 So I can mark this. 14:21.300 --> 14:25.890 This field was updated in order videos later. 14:25.890 --> 14:26.640 So there we go. 14:26.640 --> 14:28.230 So stock is being updated later on. 14:28.230 --> 14:32.340 But again, you get the idea that how this is being done and if any other requirement comes in, you 14:32.340 --> 14:33.810 can always go ahead and play around. 14:33.810 --> 14:35.640 So there is a lot to learn in this video. 14:35.640 --> 14:37.470 Let's go ahead and catch up in the next video.