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Welcome back everyone.

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Johnny be here with slopes dot com.

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And this lesson we are going to finally make our first data entry into our fire store database are I.

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The last lesson we got Are you all set up so that we can select a category and a user name and write

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a random thought and then push this button to post it.

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Right now it's not doing anything though.

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So let's change that.

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All right.

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So we are going to first go to our fire base console or so open up your browser and head on over to

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your dashboard for the project that we created a couple of lessons ago.

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OK.

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So you should be here on the overview.

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And we're we're going to go we we're going to set up our database.

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Right so come over here to database.

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Now the previous version of the firebase database system is the real time database.

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And as we covered in the previous lesson a couple lessons ago there are still times when you would want

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to use a real time database but this lesson these lessons are all about using cloud firestorm.

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So we're going to click here on try fyrst or Bayda and we have some security rules for cloud store so

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we can start out in lockdown mode which makes your database private by denying all reads and writes.

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Or we can start in test mode.

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And this says get set up quickly by allowing all reads and writes to your database but you'll see here

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a warning that says anyone with your database reference will be able to read or write to your database.

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So this isn't particularly safe but just to get started.

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And for this course we're going to go ahead and just do this in test mode so that everything is open

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to read and write.

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But again just to reiterate don't do this for production apps or this is just to get started and to

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learn.

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All right.

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And future target topic.

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We are going to actually go over using firebase authentication and how to log in and how to set up those

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security rules in a better way.

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All right.

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All right so here we are in our fire store database.

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Now if you remember from a couple of lessons ago when we were going over the fire store basics at the

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root of our database we always have to have a collection.

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All right.

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And then inside of that collection we have our documents and our documents they can hold a number of

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different types of data including strings booleans numbers dates gnoll et cetera and well actually see

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that here in just a second.

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All right and so we can actually manually create collections and documents right here from our dashboard

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OK.

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So if I click here we're going to say at collection and the collection name is going to be.

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Thoughts.

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OK.

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And then we're going to need some documents.

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Let's go ahead and create our first document here.

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Now you we can specify a document I.D. we could say something like.

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First thought

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and that would be fine and then we could add our fields and everything or we could say auto ID and then

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it will automatically generate just randomly generated document ID and then here we have the fields

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OK.

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So these documents they are organized in kind of like you could think of like dictionaries in Iowa or

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Jason objects.

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You have a document and then inside of it you have key value pairs.

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However with fire store we call those keys instead we call them fields.

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And then the values are still values.

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So for our documents these are going to be our thoughts that we display.

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And if we open up our preview for our mockup we kind of take a look at one of these thoughts that are

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displayed.

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We kind of get an idea of what we need to have stored in these documents.

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We're going to need a user name.

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We're going to need a time stamp.

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We're going to need the thought text itself.

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We're going to need to know how many likes each thought has and then we're also going to put in a field

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for a number of comments and this will be for in the future when we implement comments on each of our

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Random thoughts.

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That's going to be useful then.

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All right so let's go ahead and jump into here back into our dashboard forecourts for firebase and let's

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manually create our first thought.

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OK.

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So here we have the field and we're going to call this category and it's going to be of type string.

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And for the value I'm just going to initialize it to be funny.

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OK.

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And then we can add another field and this one we're going to say and some comments for number of comments

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and this type is going to be of number and we'll initialize it to zero.

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I'll say add a field and then this one is going to be the number of likes that The Post has that's going

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to be number likes.

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And that's also going to be a number and we'll set that to zero and then we're going to create.

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So this one is going to be the text for the thought.

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So it's a thought text thought T T S T and we're going to write.

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This is a random thought and it is of type string.

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And then we're going to need a time stamp.

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And this one is of Ty time stamp and you can see here all of the different types that you can assign

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for a field if string number Boolean object array Noall timestamp G.O. point and reference.

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OK.

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So those are all some very useful things that you could add came the time stamp was go ahead and just

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set a date.

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Can we just leave that as zeros then we're going to have our final field which is user name.

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And then all right Johnny B.

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And we can save this.

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And now we have our very first let's see what's going on.

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I'm going just going to refresh this.

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There we go.

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That's better.

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All right so now we have our thought document.

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And so you see here that it follows the pattern collection collection his thoughts and inside of that

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thoughts collection we have a number of documents and then we have the document.

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And here are its fields and then if you wanted you could have another subcollection to this document.

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And inside of that subcollection you would have other documents and.

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And so on and so forth.

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So always following the pattern collection document collection document.

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So in a future target topic when we implement comments for each of these thoughts then each of these

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documents is going to have a subcollection of comments and each of those comments will be a document

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inside of that subcollection.

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All right.

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So some pretty cool stuff.

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All right so yeah we have rent.

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We have manually placed our very first thought in our database.

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That's pretty cool but not nearly as cool as actually doing it from our app.

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All right.

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So let's go ahead and make it so that we can do that from the app.

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All right so we're going to jump back into X code and this is where we are going to do it right here

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in the post button tapped.

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All right so let's do a little bit of prep work.

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First we're going to need to be able to have a way of setting the category and getting the thought text

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and the user name.

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All right.

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So let's create a variable here.

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This variable is going to be called when I make a little header for variables but I'm going to spell

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it correctly.

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The variables that we go and when you create a variable here are going to save private var.

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I'm going to call it selected category.

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OK.

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And this is going to keep track of which category is selected when we go ahead and send them to get

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my simulated back up here.

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When we click on the and we select the different types of thoughts that we can post.

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All right.

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And I'm going to just initialize this too funny to start out with.

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That looks good.

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And then we were going to need to import firebase houmous to import firebase and there we go.

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So it doesn't matter which SDK you're working with.

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All you need to do is import firebase and that will cover the whole umbrella of different STK that you

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could be working with.

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All right so now we're here when we post on the button tapped how it works when we are saving data to

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our online database where we need to do is we need to get a reference to our collection or our document

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that we want to write to.

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And there are a couple of ways of doing that we could say fire store that fire store.

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OK.

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And then we need a reference to our base collection.

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OK.

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And so we can say collection path right here.

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And this is this gets a fire collection reference referring to the collection at the specified path

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within the database.

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OK.

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And our collection is called thoughts.

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OK.

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So this right here this gets us a reference directly to this collection here in our fire store database.

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OK.

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And then once we have that what we can do is we can say Dot and document and so here we can see we have

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had document and add document with a completion handler.

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OK so if we did this one then we wouldn't have any way of knowing once it was complete.

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But we want to know when it's complete so that we can segue back to our initial controller as well as

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Hendel if there are any errors.

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Ok so I'm going to select the on the completion handler we go and then I'm just going to press return

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again and then I'm going to tab and press return again to get the completion handler then to rename

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this error to just air e r r.

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OK.

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And then just the area of this area quick I'm just going to put empty strings are right here.

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Looks good.

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And then right here in the code this is where we can handle the error.

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So we're going to say if the air is equal to air so if there is an error and then we're going to sit

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equal to air and we're just going to debug printers to say Debug.

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Print and I'm going to say error adding document

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and then we're going to print out the error and say error.

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OK.

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Else if we were successful then I'm going to say self that navigation controller and we're just going

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to pop this view controller and we're going to stay true.

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So when you're using a navigation control you can use this method poppier you controller to just go

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backwards to the previous controller in the stack.

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OK.

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All right so now it's come back up here to our data.

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All right so we are saying add a document and the document that we are adding is this data OK.

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So we're going to do here is we are going to construct a dictionary that contains all of the data that

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we want to send up to our database.

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So we're going to have a dictionary of key and values that contain the information that we want to send

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up.

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So for instance we have up here and this is a data dictionary.

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OK.

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So we're going to have key value pairs for each one.

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OK.

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So we're in the category.

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So here I'm going to write the category and the string that we're going to be setting up.

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This is the selected category here.

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So when I say selected

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category

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get and then just to make this a little bit easier to read I'm going to write after this quick break

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here I'm going to do a return and then right here after I select the category I'm going to do another

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return tape and then after select category I'm going to do a comma because we have a number of things

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that we're going to add here.

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All right and so the next key value pair is numb comments.

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OK so this is going to be the field name that we send up in our document and it's value is going to

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initialize that to zero.

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Then when her next fuel the value pair is numb comments and its value is also going to be initialized

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to zero and then we need the thought text.

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OK.

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So let's see.

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This is going to be thought text and it is.

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So what did we call our label here thought text.

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All right.

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So we're just going to say thought text dupped text.

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And then the next one is a time stamp.

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OK.

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And for this one how we can initialize a time stamp is we say field

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value dot server time stamp and this is used with said data or update data to include a server generated

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time stamp in the written data OK.

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So we're just using this method to create the time stamp at the exact moment that we create this using

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the server time stamp.

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OK.

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And then lastly we need the user name.

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OK.

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So user name and the value is and this is going to be the user name.

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Text that text and that for now will just force unwrap this with a bang.

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All righty.

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And that's it.

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We have created our function that is going to send up all of the all of this data to fire store and

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create a brand new documentary.

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So just to recap what we did is we got a reference to our collection by saying fire store fire store

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data collection and we pass in the name of the collection here.

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And then we see ad document.

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So we're going to be adding a document to our collection of thoughts and then we set the data that is

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going to construct the document that we are sending up.

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And this is a dictionary of key value pairs.

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And so we set all of the keys and all of the values and then we have a completion handler where we can

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handle the error if there is one and we just debug printing it for now.

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And if it's successful then we are going to pop back to our main visi.

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All right let's go ahead and test this.

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I want to run it right so I have the app here and then I'm going to open a bar Safari window as well

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so that we can see if this automatically pops up here.

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So I'm going to go to our plus button here I'm going to click on it and I got also a collection of kind

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of just some silly random thoughts that I got from the internet.

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I want to copy that here and I'm going to paste it in here.

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Let's see here.

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OK.

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And then the user name is soil work fanatic.

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All right so these are from Reddit by the way.

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And then I'm going to say post and if all goes well we should see a newly generated Auto-ID pop appear

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with all of the information that we set.

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All right.

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So when I say post oh we got an error.

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All right let's see what's going on here.

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You'll see here that we have a fatal error dictionary literal contains duplicate keys.

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That's because I accidentally wrote comments twice in a row.

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The second one should be numb this.

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Never go so let's try that again.

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All right then let's get our database back open and are happy and let's try that one more time.

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OK.

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So here I'm going to pace to that random thought back in the paste and the user name was Soilwork phonetic.

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OK and let's try that one more time post umu Hey and we dismiss back to our initial Visi And here in

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our collection we have a brand new document.

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If we click on it sure enough we can see the category the number of comments number of likes the thought

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text and the time stamp and the user name.

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All right so that is pretty cool.

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Let's let's let's do another one.

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Let's come back to our ad post.

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Make sure this is still working and that someone can do a post by Jack Handy.

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He was a character on SNL for a while.

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Super funny guy and he had a collection of funny sayings called simple thoughts.

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And so I'm going to paste one of those here.

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All right.

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And so let's post that again and check out over here make sure it pops up when we get it.

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So we've got a new one and see here.

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Yep there we go.

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So we've got the category number of likes.

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Everything.

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All right.

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Very nice.

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So you can see how simple firestorm makes it to post documents to our database.

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All right.

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One thing that I want to touch on here is that we get a reference to our collection called thoughts.

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But if this this collection didn't even exist then none of these documents existed.

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We.

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And so this was the very first time we were making a post.

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We don't have to manually create a collection called thoughts.

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If we say fire store dust collection thoughts and we had a document that will implicitly create the

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collection called thoughts and the document.

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All right.

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So you don't have to manually create collections or documents and then add to them you just tell firebase

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that we want to create them and then if they don't exist they'll be created.

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If the collection exists then the document will be created inside of the collection.

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Right.

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All right so that's cool.

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All right so one last thing that I want to do to kind of clean this up a little bit.

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Right now we don't really have a way of setting the category that is selected.

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We have our action for when we go ahead and select one of the different categories but we're not saving

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that anywhere aren't.

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So I'm thinking is first let's create an enum an enumerator to store the different types of categories

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that we can select from.

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So let's do that here in our main Visi up here outside of the class declaration.

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Let's create an enumerate just means that num.

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And we're going to call that thought category and of type string.

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And our cases are going to be case serious and then string serious case funny and then string funny

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and then case crazy and then string crazy and lastly case popular because it's going to be one of the

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ways that we can sort the data and that is going to be popular.

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And there we go.

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And then the show back into our ad thought Visi and all we can do here is we're going to still initialize

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to funny.

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But instead of having just the string funny we're going to say thought category not funny that raw.

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OK so the real value gets the actual streaming value for the case.

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And then down here in our category change so each time that we click on one of those different segmented

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controllers for funny serious crazy we're going to set the value for our selected category to the correct

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one.

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So we're going to do a switch statement.

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We're going to see switch and the value that we're switching on is the category segment not select that

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segment index.

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Okay so I'm going to say category segment dot selected segment index.

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Okay so we're doing a switch statement for each time that we change the selection in our segment control.

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Okay.

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And so for the first case we're going to zero which is the funny cat and we're going to just say selected

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category is equal to thought category diet.

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Let's see here.

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Funny that raw value.

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And then for a case of one.

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So this is the second segment to control that's going to be you select the categories equal to thought

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category and serious not a raw value.

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And then we'll just set our default value to be the third segment and that is going to be selected categories

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equal to 4 category that crazy to raw value.

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So now each time that we click on one of those Let's get our simulator here.

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So now each time we click on one of these we are resetting the variable for the for the selected category

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to be a string of value for funny serious or crazy.

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All right that's good.

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00:20:34,720 --> 00:20:40,390
All right so let's get rid of this being operator right here let's come up here and we're going to do

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a guard statement here we're going to say guard let user and name equal to user name text dot text else

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and we'll just return.

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OK.

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And then down here instead of using in text text we're going to say user name.

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Now one last thing that I'm not liking is we have all of these magic strings just lying around.

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What if I had accidentally mistyped one of these and we're going to be using these in other places.

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Well so let's go ahead and make these constants I think.

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So when we create a new group here a new group run call these utilities can it create a new file and

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treat us with file here and we're going to call this Constance or I and this is we're going to store

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all of our constants say create and we're going to have a constant for our thoughts collection case

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when we say let thoughts underscore ref.

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And it's common practice to use capitalized letters four to denote constants so say thought to underscore

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equal to thoughts and then let category equal to category and then let some comments equal to some comments

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and then let them likes equal to likes and then let thought text equal to thought text and then let

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time stamp equal to time stamp.

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And lastly let user name equal user name.

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So now we have a cup Constance for each of these field values and our thoughts reference.

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I'm going to save that and jump back into the sea and let's just go ahead and replace those categories.

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Now get to Ghori.

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00:22:50,860 --> 00:22:53,020
Not sure why in my article it isn't working.

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00:22:53,020 --> 00:23:03,010
But Num. comments is now numb underscore comments like likes is now underscoring the likes thought text

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00:23:03,010 --> 00:23:13,490
is now thought underscore text the time stamp is now time stamp and user name is now a user name.

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All right.

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00:23:16,300 --> 00:23:17,260
That looks good.

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00:23:17,260 --> 00:23:18,250
Let me make sure.

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00:23:18,280 --> 00:23:21,010
What do we have here for the thought text Constans.

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00:23:21,410 --> 00:23:23,110
Oh that's because I spelled it wrong right here.

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00:23:23,160 --> 00:23:23,670
OK.

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00:23:23,830 --> 00:23:27,560
So you g h t just going to copy that.

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00:23:27,790 --> 00:23:29,930
Come back to our I had thought.

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00:23:31,120 --> 00:23:33,530
And replace that.

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00:23:33,670 --> 00:23:34,590
All right so that's looking good.

354
00:23:34,590 --> 00:23:38,150
It's going to run this one more time up and we can we can replace this right here as well.

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00:23:38,150 --> 00:23:39,420
So thoughts.

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00:23:39,440 --> 00:23:39,960
Ref.

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00:23:39,990 --> 00:23:41,780
There you go my autocomplete is back now.

358
00:23:41,910 --> 00:23:45,880
All right so let's go in and run this and make sure everything is still working as expected.

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00:23:45,880 --> 00:23:47,080
All right so here we are.

360
00:23:47,200 --> 00:23:51,620
Let's add another random thought and just can put Johnny B.

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00:23:51,940 --> 00:23:57,200
And I'm just going to write some random gibberish and say post.

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00:23:57,700 --> 00:23:59,290
And here we go.

363
00:23:59,830 --> 00:24:02,790
Let's see here category and I'm calling some likes.

364
00:24:02,830 --> 00:24:06,730
All right everything is looking good.

365
00:24:06,730 --> 00:24:12,860
All right so congratulations you are now working with firestorm from your app adding data to your database.

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00:24:12,940 --> 00:24:18,730
In the next lessons we are going to be covering some really cool stuff on how to retrieve that information

367
00:24:19,210 --> 00:24:23,660
how to filter it how to sort it how to add listeners for real time updates.

368
00:24:23,740 --> 00:24:25,580
And yes it's going to be really cool.

369
00:24:25,780 --> 00:24:30,610
First up though in the next lesson we're going to do a little bit more work so that we can set up our

370
00:24:30,610 --> 00:24:35,980
table view and have a place to be able to display that data that we're going to be working on retrieving.

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All right so I'll see you in the next one is going to be great and I'll see you then.