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What's up guys I'm Jacob with Devon slopes dot com and we pretty much finished our app it's completely

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running but I want to show you one more thing with relm like how you can pull a specific object out

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just so you kind of have a good head start for the exercise because right now we're just returning a

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whole results array for the most part a sorted one.

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But we're still not showing you how to grab one object so I'm willing to do that real quick.

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And if we go into our run model we have our one static function get all runs.

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But we also want maybe to get one run right.

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So let's make another static function and let's call it gets run

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and here we'll say for or let's say get run and we can just say by id and then we'll pass in an ID which

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is a string and this will return one optional run object instead of an entire results collection.

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So if we do that.

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The really cool thing with realm is you can so since it's by ID we're going to just pull it out of the

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realm objects by primary key.

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So we'll do our DO WHILE.

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So we can do our try or our DO catch I'm sorry.

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So let's see.

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And here we'll just return nil.

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And now we can do our relm equal try Rome.

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And we want to call our configuration that we created a couple lessons ago and this is our relm config

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file.

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Run config.

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OK so once we have our type

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or once we have our Rome Poyan from our new realm config.

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All it to do is make a variable called Run and say round object a singular object of type run dot self

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and we want it for loops for primary key.

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Right.

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And all we're going to do is pass the ID from our function from the parameter and our function pass

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that in and all we have to do now is return runs so we can actually just do this.

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Less lines of code.

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We can just return this

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and delete that line.

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And so we pull our run collection out of our realm object and only grab our primary key and there can

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only be one object per primary key.

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And now to verify that this works.

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If we go over to our beginner run VC and let's see we mapped Let's see

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OK our locations here instead of just using our last run and obviously this is fine because we already

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got it as our first parameter but let's pretend we're not sure if that is the right object.

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Like I said you wouldn't really do it here I just want to show you how you would use it.

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So we could do.

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Let's see let locations actually

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guard let locations equal run dot get run by id and we will pass in our last run.

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Dot ID and then we'll just call our locations off of that and then Alce just return a empty poly M.K.

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polyline.

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If it is nil and if it's not nil we'll have locations down here now and we'll just replace last run

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locations with locations and then also down here last run locations we can just change to locations

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obviously what we're doing here is a little redundant because we already grab the object we need but

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I'm showing you how to grab one object by an ID.

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So let's go ahead and run it.

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And as long as our poly line shows up on our last run which I believe was a freeway line we should be

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good to go.

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And there's our polyline the freeway line.

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So we're grabbing the same object just by ID instead of doing like a dot first which is pretty cool.

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All right.

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So that's all I wanted to show you in this lesson.

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And you can obviously do all sorts of cool stuff.

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Just like in our get all runs we sorted by date you can sort and filter all sorts of things so that

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filter is also something you can do.

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So yeah.

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The last lesson in this course is going to be an exercise and it's going to test your knowledge and

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see if you can make your own relm functions to return the data and different orders.

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So I will see you guys in the next lesson.

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Yeah but this course is done we made a really cool Nike clone so that's sweet and I'll see you guys

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later.