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What's up guys.

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Jacob Bledsoe with Dev slopes dot com.

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So in the last lesson we have everything completed as far as we need to have all the run data from one

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run at a time.

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But our problem is let's just run this real quick.

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Our problem is when we start our run we have data right.

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We have our pace and we have distance.

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But when we end our run we don't have any data.

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So we have to get our get all of our data saved and showing up so now it's time to get ready for realm

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right.

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So to begin we have to install the realm pod.

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OK.

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So we can actually we need to close out of our project for this.

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So close this and let's see you got some extra stuff and pull up your terminal and Wellar at this I'm

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going to go ahead and create this lesson's branch.

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Less than 12.

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OK.

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And now we need to do a pod in it.

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And that basically will install our pod or it will create our pod file and it will also create our workspace

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instead of our project file.

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So go do Padan it right.

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And that is done now let's go ahead and just pull up our project.

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So it's in my documents of slopes courses and treads.

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And now as you can see it created our pod file.

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I'm sorry I also said it would create our workspace but we have to add everything we need we need to

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add our pod to our pod file.

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Then when we install that it will create our our workspace that we would now work from.

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So if we go ahead and say open this with a text editor Here's our APOD file.

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Everything is perfect here.

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We just need to now put our pod in for realm.

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And so the best thing to do is let's go to the realm docs are right.

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So over here if you go to a realm I go forward slash docs you'll get to this nice screen and we were

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interested in the get started and click on installation and you can read through all this good stuff.

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We were interested in swift right now if you want to set up relm for other things.

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All the docs are here for you.

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So this kind of jumps into an introduction with everything let's just click over here on the left side

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get started and we're interested in installation for cocoa pods.

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Right.

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And all we have to do is use frameworks which by default.

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We already are.

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And then we need pod realm swift so I'm just going to copy and paste this POD Rhome swift and let's

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go back to our pod file and right underneath use frameworks we can fix all this.

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Once our projects created I'm just going to paste this here saved this text file and go ahead and close

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out.

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And now from our terminal when you're inside our project now we just have to do a pod install and there

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we go.

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Installed relm 2.8 too great.

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And it's telling us that we should specify a version I think in our pod file it does 9 automatically

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which is fine.

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And there goes it created a pod file clock and our workspace code.

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Now you always want to open the X-C workspace not the X code project anymore.

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So go ahead and open the workspace code and it's our same project now it's a directory for POD's.

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And if you just pull this down and go into the pod file you'll see that our pod of realms with does

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install and I'm just going to tab that over and that's all we need to do.

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And what it was actually yelling at us for it wants us to specify what was we're going to do if we just

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get rid of that hash tag we'll say down to nine point OK.

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And that should be good.

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Let's go ahead and now for that to actually take take or start working we should do a pot install again.

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But we shouldn't get that warning.

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There we go and that warning's gone.

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OK great.

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Now if we just open up our project again expand the treads folder and let's see in our model folder

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we need to create our run model.

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And if we go to our current run VC we have our duration our pace and our distance that we need to keep

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track of right.

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And I'm pretty sure that's all we're going to need in our in our model right unless you guys can think

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of anything else.

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Which we might be running across shortly but let's go ahead and make our our model so go ahead and right

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click model folder and say new file and we want ios in a swift file.

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OK.

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And we are going to call this run and hit create and now we have an empty and empty swift file and first

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we need to import realm or relm Swift right.

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And now we need to create our object which is going to be class run and it needs to inherit from object.

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And let's go ahead and build this.

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So it finds the realm swift

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and when I built it I just hit command B.

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You can also pull down the product and select build

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what this is building.

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Let's go over to the documents and let's go ahead and click on the models here underneath the swift

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models and we'll start reading about this stuff.

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OK so when you create your class that inherits from object really the only restrictions that you have

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buy like you can make protocols you can make any function that you need to manipulate your object or

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save things whatever you want.

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The only thing you have to do is always make sure you access that object on the same thread.

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So when we start saving to our to our realm database we're going to make sure we create a a constant

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for doing the dispatch queue and will always access our role model from the same thread.

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And that's the that's the only like kind of strange thing with relm but it's no big deal we'll do it

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and we'll move forward.

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And so as you're creating your objects so you need to inherit from object which is cool.

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It's fine.

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And then we are a little restricted with supported types.

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And with that being said you can use bhool integer and basically any ints you want you can use double

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and float which is awesome and strings so those are the primary ones are easy to use in.

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But for like a. date you had to use anti-state you can't use date and then same with data ASC-P and

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as data and we'll get into all of this.

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And as you can see like C.G. float is discouraged and like we're going to be keeping track of locations

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eventually.

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And that C-L location and I'll show you how we can get around all that.

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And when you actually dive deeper into like sea location it's really just two doubles.

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So it ends up not being a problem and we'll get into all this.

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It's not too hard.

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And then so with all that being said with supported types and everything why don't we go dive back in

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and we'll start making our model.

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And as we run into things I'll I'll explain it the best I can.

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So if we go back to a run model we have it inheriting from objects and we also.

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So when we create a a variable for Rome and needs to be dynamic it needs dynamic in front of the variable

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so it can be in a successor to the underlying database for relm and that allows the database to change

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our variables.

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Like are normal variables and we don't have to deal with anything on the database level realm does it

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for us.

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So just remember that dynamics required.

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And it allows our variables to you know be grabbed and saved and changed just like it's a local a local

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there or a native variable just like you know doing something like var number equals one.

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It would be just like that.

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But dynamic we're allowing it to be assessed by the underlying database and saved to the database the

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same way.

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So our first variable that we're going to need so this is important to know when you're using databases

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you need IDs so you need an I.D. that you can always grab this object from.

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OK.

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And so we need to create an ID.

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And right now we're just going to make this public private set and var ID.

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And it's always best to just set the variable to a default like an empty string or 0 or whatever you

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want it just makes everything easier for relm to have a variable already set just in case it doesn't

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get set.

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You can have optionals it just it complicates things a little bit.

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So for this project we're going to set all of our variables to a default variable for now.

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All right.

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And so what public and private means it's just like data encapsulation but avoids us having to do our

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getter and setter.

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And I know in a lot of our other courses we always do getters and setters but this is the same exact

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thing.

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It allows the variable to be good.

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Or you know you can get it from a different class or file but then you can only if you do private and

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then set in parentheses you can only set the variable within this file.

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So it's super important and it's the same thing as data and cancellation is just a lot less typing.

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So we need an ID and we also need a dynamic public.

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I have to spell dynamic right dynamic

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private man struggles falling off Homero.

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All right.

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And we also need a pace and we'll just set that equal to zero.

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And that's an integer.

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And then we need a

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we need the distance.

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And this is going to be a double and then we also need

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the duration.

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And that is also an integer.

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So we can just set that to zero Okay.

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So one thing we're probably forgetting.

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Let me just pull up our docs real quick when we look at our log we also display the date of the run.

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So we're going to also want to keep track of the date.

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And what's nice about if we keep track of the whole and best date.

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So if I do something like date it was created and whole and as Date object we will set it to.

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This is going to allow us to also sort.

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We can also sort all of our data by the date and the great thing is this date has a time stamp as well

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even if we don't display the time stamp.

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We can still display everything in order.

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All sorting off the next date.

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So that's really cool.

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So I think this is everything we need.

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And then with relm you have to have a primary key and you have to let relm know what variable is your

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primary key.

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OK.

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So we're just going to override.

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You have to do override class phunk index proc index.

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I'm sorry.

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A primary key I'm getting in the head of myself.

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Primary Key and this just returns a string and all you do in this is return the string for what variable

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you want to be the primary key and we just return it as a string and you just type exactly what your

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ID is or whatever variable you're using and your idea is to be unique.

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So you can't just like when you create an object or you couldn't just say the ID is run but you could

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say your ID is run 0 run 1 run to run 3 and have incrementing numbers to keep track of your ID.

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But it has to be unique.

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It's just like a database.

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So like you can grab any object out of the realm database just knowing its ID.

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So that's really nice.

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It's really powerful.

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It's really cool.

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And then another cool thing is indexed properties.

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Override class func and then indexed properties.

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And this returns an A an array of strings

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and all we do here is return an array and pass in the index properties that you want to use.

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So like in our case an index property is like if you want to filter or sort by something you would use

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an index properties so we probably want date pace duration and distance to all be part of these index

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properties right.

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The one downside in an index property does not work with type double.

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So we can do date pace and duration and you do that the same way as returning the key space loops and

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it doesn't matter the order what is going on.

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OK.

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So date and duration.

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Okay.

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And now we need a convenience initialiser

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so convenience and net and all we need to initialize a run object is going to be the pace which is an

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integer the distance which is a double and the duration which isn't right and then we just have to call

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a self in it.

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So call it.

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It creates itself and then we can set the ID here and the ID we want to generate a random function or

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a randomly generated number right.

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So I'm going to kind of take a side turn so we can get this Id set up so let's go ahead and create this.

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OK so our idea we want to be a randomly generated ID right.

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And I don't want to think about it because you can't ever have the same number.

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So if we said this is run one we'd constantly have to be referencing the realm database to know what

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that count is.

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But I'm just going to make a random you ID and you can do that easily by just doing it you you Id open

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an enclosed in parentheses and then we want it as a string and we want it all lowercase and it doesn't

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matter we don't have to make it lower case.

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I'm just doing this because it's a preference of mine and that will set our ID and that makes our IDs

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always unique for our runs.

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And then we can just say ourself date and this is going to equal and this date and that will set the

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current date when this objects created and then self pace equals pace.

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And I'm doing the self because we need to know we're talking about these variables and not this variable.

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Right.

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All right.

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And then self distance equals distance and then self duration equals duration.

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All right.

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So we accomplished making our first relm object.

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OK.

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So everything we did here is basically the building blocks and everything you need to create a realm

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object and we'll end this course here or this lesson here and in the next one I'm going to show you

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how to add the objects to the database so we can grab it and display it on our log later.

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So in the next lesson we will be saving our object to the database and I will see you then.

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But before we sign off let's pull up our terminal and make sure we commit this so get ad period get

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commit Dasch am and we created our relm object.

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All right.

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Great.

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And I will see you guys in the next lesson.