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The tests around our two listeners are looking pretty good so I'm not going to start to move on to a

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couple of other things.

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I put together a quick diagram just to help you understand what we're going to do in the next couple

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of videos.

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And I did this just because right now we have to tackle a couple of little side topics really quickly.

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Just some kind of administrative stuff to make sure everything works as expected and whenever we go

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through these kind of Diskin jointed topics it's really easy to get lost and lose sight of what we're

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really trying to do.

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So this is what we're going to try to achieve in the next couple of videos.

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First we're gonna add in the Mongoose update if current module into the orders model.

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The reason for this is that we want to add that same kind of version system around orders just as we

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have it around tickets.

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We're going to eventually emit events or publish a lot of events and listen to a lot of events around

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orders changing over time and just like with tickets we need to make sure we process those events in

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the correct order.

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And so we're always gonna do that by wiring up this update if current module after that.

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We're then going to fix up a couple of tests so in particular we're going to make sure that whenever

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we are creating tickets inside of our order service we may need to make sure that we provide an I.D..

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This is tied to some of the stuff we just went through in the last couple of videos remember we want

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to make sure we have a consistent I.D. for all the tickets that are created between our ticket service

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and the order service.

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However we have a lot of code inside the order service right now that creates tickets without providing

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an I.D..

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So we have to go hunt around in a couple locations and find those locations and just make sure we provide

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an I.D. whenever we create a ticket.

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And then finally last thing just a little bit ago we made an update to our cone module and we said that

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all of our different events were going to include a version flag.

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However we do have two locations inside the order service where we are emitting information or publishing

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information about in order and we are currently not including a version property when we are publishing

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those events.

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And so that those right now are causing a typescript error typescript is saying we want to publish this

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event you have to provide a version guess that's it that's a we're going to go through.

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Let's start first right now with the Mongoose update if current module in the orders model so inside

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my order service I'm going to find the order model file at the very top I will import the

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plugin update if current plugin from Mongoose update if current

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well then go down to right after our schema right after the order schema we'll throw in here order schema

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not set version key and again we're gonna set it to version and then right after that we're going to

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tell this schema to make use of that plugin tool at an order schema that plugin and pass an update if

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current plugin.

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There we go.

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Last thing to do.

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We're gonna go back up to our order document interface so again remember this describes all the properties

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that an order has the Mongoose document interface says that a document has an underscore underscore

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of the property which is usually used for checking versions but as we discussed many times we are recording

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our versions on a version property.

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So just so we can access that version property we have to add it to this order dock interface.

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And that's just to make typescript happy and understand that all orders have a version property that

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will add inside of your version is going to be a number and that's it go get so that's step number one.

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Let's take a quick pause right here.

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When we come back next video we're going to fix up a couple of tests.