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Now that we've got this order status put together let's figure out what's going on with this ticket

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Doc reference right here.

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Remember we want to replicate all the different tickets that are being created inside of our ticket

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service over to the order service as well.

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Then on each of our different order documents we're going to provide a reference over to the ticket

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that this order is trying to allow a user to purchase so in just a moment we're going to create another

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model inside of our models directory.

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And this model is going to create this idea of a ticket inside of our order service.

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We're going to access these tickets and associate them with the orders through the population system

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or the reference system in mongoose.

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Let me very quickly give you an example of how that code or how that Mongoose stuff is going to work.

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So there's really three different scenarios we need to worry about here.

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I wrote out the three different scenarios in code rather than the diagram because diagram is kind of

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hard to understand when it comes to just strictly code and how we actually write the code out to the

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three things we need to understand how to do is how to associate an existing order and a ticket together

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to associate an existing ticket with a brand new order that is about to be created and then finally

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how to fetch an order from our database and the associated ticket that is whether or the ticket that

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is associated with it.

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So first case right here how do we associate a existing order and ticket together.

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Well we're going to pull a ticket in order out of the database.

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We're then going to take that ticket and set it on the ticket property of the order and then save the

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order to the database.

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That's pretty much it.

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That's how this ref system works with Mongoose if you want to associate an existing ticket with a new

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order.

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So this really very much is what we are about to do inside of our new route handler.

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We're going to pull the ticket out of the database.

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We're then going to try to build in order and for the ticket property we're going to assign the ticket

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that we just pulled out of the database.

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We would then save the order to the database like so.

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And then finally whenever we want to figure out what order is associated with what given ticket we'll

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do a query for an order.

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And on that query we're going to also add in this little populate method to it to a call populate provided

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the name of the record or the key on the order that we want to populate.

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In this case it is ticket as we are setting that ticket property right there.

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Then when Mongoose goes and finds this order inside the database it will also fetch the associate with

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ticket with it as well.

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And we can then access that ticket off of the order by writing out order dot ticket.

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So for example if we wanted to know the price of the ticket would you order ticket price if you wanted

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to know the title the ticket order that title that ticket.

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That's pretty much it so we get all this stuff working we've already set up the order itself correctly.

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We just have to also add in a new model or a ticket as well.

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That's pretty much it.

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So let's pause right here.

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We're going gonna come back the next video create a model for our ticket.