Add a ViewModel with @EnvironmentObject in SwiftUI | Todo List #3

[@m.d.perkins1407]

Really appreciate the video, and great work! I feel like it kind of strayed from the declarative concept for SwiftUI with all the alert stuff, though. You can remove all of that, set the default text for TextField to "Type something here... (3 character minimum)" (or something similar) and add .disabled(textFieldText.count < 3) to your Button. This makes for streamlined, declarative code. Hope this helps, and thanks again for the great videos!

[@kiran-nr4pq]

Thank you so much for this amazing video! I truly appreciate the depth of knowledge and the attention to detail you’ve put into covering the topic. It’s clear how much effort went into making this comprehensive and easy to understand. Your dedication to sharing this kind of content is what makes a difference in helping developers, like myself, improve and grow. Thanks again!

[@jalapisco]

Disregard my question. I should have continued watching the video before jumping into conclusions. Thanks again for a great tutorial.

[@samtree99]

You write very clean code! Thank you from a retired C++ programmer. This 3 videos of the MVVM concept are right at the point and precise. Nothing better than simple example that explains important concept. Excellent job and a great teach. Kids need teachers like you 👍🏼

[@rfolden8089]

Old retired C programmers like me need teachers like him also!

[@ec92009y]

Probably the best MVVM video out there. You show haw to change a pile of disorganized code into a clean MVVM setup. Thanks.

[@mr.erikchun5863]

He's the only one who literally and I mean literally gave us everything for free. Everyone else is money hungry who begins a topic and redirects people to a garbage course on another website that happens to be 75% off for a few hours.

[@daniruiz931]

Great job! You covered so many important concepts that get me excited to build my own ideas in Xcode. Thanks a lot!

[@SwiftfulThinking]

Thanks for watching Daniel!

[@oscarsilva9644]

How I searched the internet for a video like this! I wish I could give as many thumbs up as I think this video deserves.

[@AZMerf]

You do a really nice job of building the foundation and then continuing to build upon that, going back where necessary to remind the learners. Thank you.

[@SwiftfulThinking]

I'm glad you're able to follow along an understand. One of my biggest pet peeves is online courses that are hard to follow because the instructor does something and doesn't explain it haha. Let me know if you ever have questions!

[@emrah309]

This is a top level beginner level course from Nick that makes you understand good coding practices, property wrappers, MVVM, saving. Thanks Nick!

[@dugrut1325]

My third time around on this series. I may sleep 5 hours a day, so I have lots of time. And it's finally getting through. You're doing a great job. I've watched other videos which you've covered and I can say you are the best teacher. Thanks again.

[@alisampson6639]

This is a very great course. Thanks so much sir.

[@SwiftfulThinking]

My man! Thank you 👍

[@gccount]

I am so excited to learn from the series! I 'd like to give more thumbs!

[@carlosswiftdev2703]

I knew how to do this but I still learnt something! other tutorials would change the id which I always found odd especially if that's being stored in a database. Nick you're a star 🤩

[@dugrut1325]

Expert, hahaha, thanks for the vote of confidence!

[@SwiftfulThinking]

I know you're well on the way Douglas 😎

[@andresraigoza2082]

Thank you so much!!! This is great value for me. I am finally learning how to do things right in Xcode. Thanks for sharing

[@SwiftfulThinking]

You are moving so fast through these videos! 🤓😎

[@Stevesvideoshelf]

Whew! This one really challenges me. The Update in CRUD seems to be the hardest concept to wrap my head around. I don't feel like I fully understand the code for it yet. I'll be rewatching this one for sure! Anyway. Thanks again Nick. Great video, as always!

[@SwiftfulThinking]

The Model that we are updating is a Struct. Structs are based on VALUES and not INSTANCES... When you "update" a Class, you can access the instance of the class and change values inside. However, since Structs don't have instances and are based directly on their values, you can't change a value in a struct, otherwise it would be a different struct. Instead, we can "mutate" the struct, which is really just creating a new Struct and replacing it with the current one. In the update function, we are creating a totally new Struct, however, we are initializing it with most of the values from the current/previous struct.

[@amorimcode]

really good course, migrating from react native to swift ui, that's helping me a lot, thanks!

[@fadel_sultan]

Thank you for this list, really it is very smart with you I watched it as a movie 🥰 Hint: In 21:32 you can short code to func textIsAppropriate() -> Bool { return textFieldText.count > 3 } Thanks

[@TheSpiralnotizblock]

As always, a FANTASTIC video!

[@AlpineDevCode]

It's really very interesting course! Thank you so much for your time!

[@deandrei912]

Thank you for the tutorials! You are great!

[@ShowMeLova]

The video is superb! as always!

[@robertbe5807]

Very good course! Thanks,

[@charpi1472]

Amazing video, quick question though: am I correct in believing that you didn't add the addView functions (saveButtonPressed(), textIsAppropriate(), and getAlert()) to the ListViewModel because these functions deal with the UI aspects and are not CRUD related?

[@SM-hr4ml]

2 of them can, if you import SwiftUI into the view model class file , but I am really struggling w/ the 3rd, ie saveButtonPressed .... bc of the @Environment call.

[@leotambasco9294]

Hi!!! first of all congratulations for your job! it's really great and helpful I'm new on IOS and MVVC, let me ask you something, if i'm not wrong ListRowView is accessing directly to the model (ItemModel), is it possible in MVVM?

[@Phdit]

Great video, but i don't understand when and why you use struct or class, and on the inmutable struct, it is not the same making private the arguments and changing the variable inside the function?

[@kheder.t.asfour]

man when you say MVVM expert I fell like 😌😌😏😏 😂😂

[@SwiftfulThinking]

You are haha 😁

[@faikcoskuncakr7418]

Very very very very good video for me. Thank you sooooooooo muuuucccchhhhh

[@SwiftfulThinking]

Thanks for watching Faik 🥳

[@doctorstrangelove798]

Thanks, i have a better understanding of the MVVM architecture

[@jalapisco]

Hello Nick, great tutorial (as always). Quick question: ListView was working fine in the simulator but not in the canvas. I looked it up in stackoverflow and somebody suggested making this change to the preview struct (see the line where ListView() is called). struct ListView_Previews: PreviewProvider { static var previews: some View { NavigationStack { ListView().environmentObject(ListViewModel()) } } } That seemed to do the trick but I'm not entirely sure I understand what I did.

[@SwiftfulThinking]

The view requires a ListViewModel to be in the environment or it won’t compile. There’s a video on @EnvironmentObject in the Bootcamp playlist 👍

[@gibber1sh-c6w]

Had the exact same issue. Thanks!

[@spradohak]

hey guys, quick tip you can use dismiss as a keyPath for the environment instead of presentationMode. like this: @Environment(\.dismiss) var dismiss and then you can just say dismiss() any where, to make the view dismiss itself. Note: when you call it, just write down dismiss() without dot in front of it.

[@randlyce]

Great Video! learning a lot

[@SwiftfulThinking]

Awesome, thanks again!

[@ritzg98]

I'm at about 12:00. There does not appear to be anything wrong with my version of the code (copied from the example code in the video). It gets to the point of displaying the ListView, but then gives a PreviewCrashed message in the simulator. Any insights as to what might be causing this?

[@chett_republic]

did you find a solution ??

[@sergiocaplan1168]

Just so I know I have it right: When you’re updating the item (toggling the isCompleted): Technically you’re creating a new item, and putting it in the same index as the item before you toggled the isCompleted. So the item that existed before you toggled the isCompleted is erased by the OS? So I have it correct? ps. Thanks for your videos.

[@SwiftfulThinking]

Yes exactly. There is more than one way to do this but I find this to be a safe approach for beginners 👍

[@lehanas4918]

Great video, thanks 👭we are learning....

[@SwiftfulThinking]

lehanas! Thanks for watching :)

[@bayraminanc885]

Great work

[@SwiftfulThinking]

Thanks Bayram!

[@sgtpotatoe]

Great video! I come from Android development and been learning SwiftUI for a few months now. MVVM is also the standard or most common architecture in Android Apps, but there's a couple things that look different even though the role is exactly the same. I find it very practical that you can initialize the ViewModel in the app struct (at app launch) as a StateObject and then there is no destroying or recreating of that viewmodel instance during the app lifecycle. I'm yet to watch the viewmodel video you have done that deals with viewmodel & coredata, but I wanted to ask something, in this project you had a viewmodel for the model ItemModel, but as you add more views and possibly more models, would you add more viewmodels? And just add them like the first one in app struct?

[@SwiftfulThinking]

Hey, thanks for watching! I'm a bit confused about your question. Just to confirm, the ViewModel here is initialized at the app launch using @StateObject and then passed around the app using @EnvironmentObject. We are not destroying and recreating it during the life cycle.

[@SwiftfulThinking]

As for the second part of your question, yes I would make more ViewModels if we added more Views (assuming the new Views didn't share the same ViewModel logic). I would also note that this is a beginner level course and it's much easier to learn/follow by creating ViewModels within the structs that need them. I have not covered Protocols or Dependency Injection yet, but if you know how to use these to make the VM initialization more efficient, then you should definitely do that!

[@sgtpotatoe]

@@SwiftfulThinking Yeah exactly, by initializing it once at app launch you dont have to worry about it. The question is irrelevant to this sorry! All I was curious about is how the view models escalate with app complexity such as adding more models & views, do you tend to use one single viewmodel or multiple viewmodels? Or just depends on the situation?

[@SwiftfulThinking]

@@sgtpotatoe Complex apps usually use multiple ViewModels. If you had one for the entire app, it would end up being very long and confusing to work with. A rough estimate could be one ViewModel for each screen. Apps with more advanced architecture might also have some "global" ObservableObjects that are more high level than a ViewModel, but function in the same way.

[@sgtpotatoe]

@@SwiftfulThinking Thanks a lot! Really helpful!

[@devpaulc]

great tutorial. I was wondering how would you sort the list alphabetically or, if I'd add a due date to the data model, how would you sort it by due date?

[@SwiftfulThinking]

Hey Paul, yes you could definitely do that! You would need to add the fields to the data model and then sort the items before setting self.items = savedItems. I cover the basics of sorting here: kzbin.info/www/bejne/fF7Kho2wqbWHnas and a more advanced example in the Crypto App tutorial here: kzbin.info/www/bejne/j6PLeHtugtCkiMU

[@devpaulc]

@@SwiftfulThinking thanks for the quick reply. I’ll check those out tonight

[@erenunal1512]

Does anyone knows why the move function is not properly work on preview. It works fine on simulator.

[@halamh5967]

Hello Nick! Great Tutorial Thanks! I just have one question please. At minute 18: 02 you passed item to the addItem function instead of $item, isn't item supposed to be binding?

[@SwiftfulThinking]

Im SwiftUI, data normally flows from parent to child. You only need a binding if the child needs to update the parent.

[@halamh5967]

@@SwiftfulThinking got it thanks! 🫡

[@lolrie]

Hey Nick - when updating task completed state, could we just toggle isCompleted using items[index].isCompleted.toggle() rather than creating a new item and placing it into the same index? What's the tradeoff between manipulating a property of what's already there vs. replacing the item entirely? Thanks!

[@CinematicAdventureOne]

Because isCompleted is a constant property, you can’t change it outside of the model struct. That’s why he created an additional initializer and put it in a function inside of model struct to remain the same id and title during initialization for existing item.

[@lolrie]

@@CinematicAdventureOne If we know isCompleted is a property that will change, can't we just declare it with var to avoid creating an additional initializer? What's the benefit of creating it as a constant property?

[@artembra8775]

@@lolrie same questions

[@markerbaugh4016]

I have just worked through the Bootcamp videos and I'm now building along with this series. I really appreciate what you have done. I notice that when I run the app in the simulator, the console is displaying a lengthy message containing "Unable to simultaneously satisfy constraints." If you look closely at the screen in the video, it looks like it is also displaying a similar message. The message refers to UI... and NS... so I am assuming that it is coming from the underlying UIKit. The message gives hints on resolving the issue, but again this seems oriented to a UIKit solution. Should we try to eliminate this situation from the app and how would we go about finding and eliminating the constraint that is causing it? I did some further testing and I can make the message go away by removing the line .navigationTItle("Todo ...

[@iosUser-e1n]

Hello nick I have one question regarding MVVM why you have not put text validation code in viewmodel [as this code also represent presentation business logic and our view should not include any business logic]

[@anmol-suneja]

I was wondering the same, whether we should add isTextAppropriate() method inside viewmodel

[@jacob.lindgren]

Really well done series! How would you go about tracking only one item selected? To be able to reference that item in another part of the app later.

[@SwiftfulThinking]

You could add a "selectedItem" variable into the ViewModel!

[@michaelsmirnov9796]

Great videos, love the material, good job. A note - 'indices' is pronounced "in-duh-sees"

[@SwiftfulThinking]

Hahaha I think you're right -____-

[@kenturnbull9679]

@@SwiftfulThinking OH he's right

[@horai8256]

How does the immutable struct compare to a class with private properties? With a class, you can still forbid accidental changes to private properties, and "updateCompletion" function doesn't create a new object. I'd like to understand your thoughts on the design choice behind this. Thanks!

[@dugrut1325]

this is the part that you skimped on: func updateItem: you are forcing a the change of one value within the ItemViewModel.isCompleted. What if you had to pass an updated value for the .title, how is that done. I've watched this video so many times, thinking I missed something. SO HOW IS THIS DONE. Can you clarify please?

[@aprilsianpi7973]

Always thank you for the great videos. Can you please make another video focusing on updateItem? I have never seen such a powerful technique on KZbin. To make it harder for learning purposes, It would be really great with optional in the immutable struct.

[@SwiftfulThinking]

Hi April! Thanks for watching. You should be able to update the updateItem function with whatever parameters you want to change. You just need to return a new struct (Model) with the correct values!

[@aprilsianpi7973]

@@SwiftfulThinking Thank you.

[@dr.craigcurphey4829]

After watching this video 3x plus writing the code as you build it on the 4th, I think I am missing some nuances and am a bit fuzzy regarding how the itemModel and ListViewModel communicate with each other. If I can get specific about a few questions can I ask you in your website?

[@SwiftfulThinking]

Hey Craig, yes, I'm happy to answer questions. It might be better to finish the course first though. I think things might make more sense as we wrap up and test the application in the next few videos!

[@FlashGamer521]

Just out of curiosity, if you wanted addItem to update when a user pressed return in the textField rather than via the button, how would that be accomplished? -- I tried a few things, but keep running into Type '()' cannot conform to 'View' errors.

[@m__link6499]

One question please : why sometimes, you created a swift file and adding SwiftUi framework, instead of just creating a SwiftUI file ? 🤔Thank you.

[@SwiftfulThinking]

Hey great question! I use SwiftUI files when I need the preview section at the bottom because it comes with the template Previews (for the Views). But I use Swift file when I don't need the preview (for everything other than the View). The different is just the template code that comes in the starting file. You can actually edit either of them to be the same thing haha

[@mystride]

If you have 20+ models and main views in your app, is there any performance risk to making them all .envornmentObjects where they are all aware of each other? Or should Views and ViewControllers be in 1:1 relationship. Example: CoolView is only aware of CoolViewController directly? Thank you!

[@SwiftfulThinking]

Eventually there would be a performance loss because you're going to load all of this extra, non-essential code into every View. However, the bigger worry would just be organization. You can't have 2 of the same Type of objects in the same Environment of a view, and you often don't want all of your Views to have access to all of your services.

[@mystride]

@@SwiftfulThinking That makes sense. Thank you!

[@vonsglutenfreerecipes]

Love your tutorials. what about the alert part when I try to put in in the " textFieldText func where to show alert when the input is less than 3 characters I get this "Modifying state during view update, this will cause undefined behavior." I am not sure if I mistyped something , or it's an update in Xcode 13, since you are in 12. It's probably me , but I would appreciate if you could help me with this.

[@leonardohopp5443]

I was wondering why my code didn't work until I realized that I left the @Environment(\.presentationMode) var presentationMode out. There is actually a correlation between the EditButton() and the presentationMode. When you use the NavigationView-Button to go back to the MainView the EditButton won't work. Super weird. Do you have an explanation? Love this Bootcamp :)

[@Brecht1970]

Hi Nick, how can we edit an item from the list? A new view with a destinationlink I suppose but how do we get the data from that row in the new view? Thanks in advance for your answer and thanks for sharing your knowledge!

[@CinematicAdventureOne]

You can add .swipeAction modifier on foreach row, and add a button with navLink to a new view.

[@sema_f]

Thank you so much!!! 🥰🥳💡

[@SwiftfulThinking]

You’re welcome 😊

[@raysingh__]

great video :)

[@morreke]

Great coding practice making use of immutable structs. I'm just wondering if you can use this too if you want to change a value in all your other items. For example an indicator that shows which list item is selected after it got pressed. At the moment in my view I'm looping through "myViewModel.items.indices"with a ForEach loop which gives me an index, and then I'm using this index in my viewModels function "items[index].isActive = true" & "for i in items.indices where i != index { items[i].isActive = false". It works, but if i need to display some other value from the array then i need to use the index too instead of the item itself.

[@SwiftfulThinking]

The initializer of the ForEach that uses a Range (what you’re using here) specifically says it’s only for an array with a “constant” range. So if you’re changing the number of items in the array, it’s better not to use that. If you’re looping on Items, you can also make a function to find the Item’s index using array.firstIndex(where:)

[@morreke]

@@SwiftfulThinking Alright good tip thanks a lot ! Now I'm still looking how I can change the values of all other instances (so all except the index)

[@jimmyciaston7733]

Quick question, why in the AddView file, you have functions (ie. saveButtonPressed & textIsAppropriate). Shouldn't this go on the viewModel file?

[@CinematicAdventureOne]

I think you can create a new viewModel just for AddView to play with the function logic. But adding these function and logic to ListViewModel will make it a bit complex and confusing as it’s a beginner tutorial.

[@metinsaglam5027]

"Thread 1: Fatal error: No ObservableObject of type ListViewModel found. A View.environmentObject(_:) for ListViewModel may be missing as an ancestor of this view." I took an error..

[@rasheed1andrew]

just found out you attended Penn State. nice. we probably crossed path couple of times. this video got me feeling fuzzy but I will watch over and over. here is a question. when you create cells in a list view like you did here. in this example, you can tap and it changes the state of the cell (the circle becomes filled with a green check mark.). if the cells where to be put in a navigation link, what will happen. I feel like on tap, the view will change to the view set in the navigation link but the circle wouldn't change to the green check mark.

[@SwiftfulThinking]

We are!! I love meeting fellow penn staters. That's awesome.... you're question is fairly specific. If you're using a NavigationLink, the button would then navigate to the next screen, so having the circle animation would be pointless. There are probably better ways to optimize if that's the situation.

[@rasheed1andrew]

@@SwiftfulThinking if you look at the Apple Music app for example. In a list of songs, if you tap the button on the far right, it adds the song to your playlist but if you tap anywhere els on the cell, it plays the music. I wanted to implement the same feature in my app where if you where to tap on a button on the far right an action occurs like subscribe but if you were to tap any where else on the cell it takes you to a detailed view of the cell.

[@rasheed1andrew]

@@SwiftfulThinking I followed these steps and at around 18 minutes into the video creating the add function into the view model, I'm getting a couple of errors.

[@rasheed1andrew]

no exact matches in call to instance method 'append'

[@SwiftfulThinking]

@@rasheed1andrew It sounds like you might have made a typo somewhere. The full source code is available on my Github if you want to compare: github.com/SwiftfulThinking

[@dugrut1325]

also another scenario. Where a record is created, some data attributes can not be changed for that record but only one of the attributes will be updated, of course pointing to the same id. How is this managed in the ItemViewModel? I hope you have time to help.

[@rajanmaheshwari]

I am not sure I am the only one facing but adding a tap gesture on ListRowView only works when we tap on the area which has the image and label covered. The empty area to the right doesn’t work. It may be due to HStack which is to the extreme left leading. Adding the label with more than 1 line text works fine. We can tap anywhere in the cell. How to achieve the didSelectItem like behaviour even if the text is small and we want a tap to be enabled within the cell but outside the label and image area.

[@SwiftfulThinking]

You can either make the cell a Button or add a .background(Color.black.opacity(0.001) to make the area tappable

[@gucp]

27:47 it was all fun and games until this point 😅but I think I got the hang of it, had to use playground to visualise it

[@kurtschmucker4229]

At about 1:52, you say: "I did a whole video in the SwiftUI Bootcamp on (deleting items from a list)." I have looked, and I can't find such a video. Which Bootcamp video does this?

[@SwiftfulThinking]

It’s included in this one: kzbin.info/www/bejne/qpyyn4t9YtiBodU

[@kurtschmucker4229]

@@SwiftfulThinking Thanks for the quick reply. My confusion was caused by your channel home page. On your channel home page, the SwiftUI Bootcamp (Beginner Level) lists only 11 videos in the scrolling carousel . I have now seen the whole playlist which has more than 50 videos! This explains why I could not understand several times when you referenced back to a Bootcamp video. I have a lot more videos to watch!

[@jahongirtursunboyev6470]

Thanks a lot

[@dr.craigcurphey4829]

Great training video but the complicated workings and relationships between the VM and the View and the Model really confused me so I'll hafta go over it a few times. Maybe I'll have a specific question shortly.

[@SwiftfulThinking]

Hi Craig! That's exactly why I started with this very simple app. I think a lot of people overcomplicated the ViewModel. All we are really doing is separating the logic for the screen (which is in the View) from the logic for the data behind the screen (which is in the ViewModel). Definitely let me know if you have any questions!

[@dr.craigcurphey4829]

@@SwiftfulThinking that part I understand - what gets me is the alert processing - you have the .alert on the ScrollView but I don't understand why it fires or what its purpose is when the text is < 3 characters keyed in and that is triggered by the button action (saveButtonPressed). so does the modifier on the ScrollView simply define an alert? i don't get it obviously. thanks for helping!

[@dr.craigcurphey4829]

I finally got it - had to re-watch the Alert video! your videos are like a reference libraray!

[@SwiftfulThinking]

@@dr.craigcurphey4829 Haha that's great to hear. I tried to structure the courses so that I never use anything in a video that I haven't previously covered already :)

[@James-i6g7m]

@@SwiftfulThinking your videos are great. but I think you need to create some videos without separating the models. im being really confused how to link each other. especially with itemModel and listView. why didn't you do it with just toggle instead of crating another initializer.

[@MegaAVINASH24]

Really useful. However in my case addItem(...) has nil value. So when textfield is unfocused it's resetting value to nil and it seems modelobject's value is not binded. It's binded only in viewmodel level. Can anyone suggest a solution for this?

[@pierremarais7669]

Thanks for an AMAZING good video, I want to know more on how to use existing sqlite DB within my new app for just reading data and display it, any suggestions where to get a good example please, thanks

[@SwiftfulThinking]

Hey Pierre! I don't have any good references for this, sorry.

[@vladislavbogucharov6256]

Why can't we change the state of the model like this? var item = item item.isCompleted = !item.isCompleted

[@SwiftfulThinking]

Because the Model is a Struct and not a Class. Structs are based on values, so in order to change the data inside a Struct, we need to "mutate" it or create a new one with updated information. If our model was a Class, then we could do that..

[@vladislavbogucharov6256]

@@SwiftfulThinking Thanks! Your explanations are amazing.

[@oscargidefjord848]

If i want to add more fields of texts to the array from the addView, for example some values (ints), how would you do that?

[@SwiftfulThinking]

You can add more properties within the Model and update it the same way we are updating the completion boolean.

[@Bharat_s]

my fav button crashed giving this error "Thread 1: Fatal error: No ObservableObject of type TodoDataModel found. A View.environmentObject(_:) for TodoDataModel may be missing as an ancestor of this view."

[@kanghanj]

great tutorials. a little suggestion: use a better mic.

[@SwiftfulThinking]

Hi Hanjun! Yea I need to invest in one 😩 Sorry about that.

[@拉雞毛]

12:33 how to get the shortcut of text below when you type the first symbol " @ "? On my computer, If I type @En, It won't show up the ENTRY, Encoder, Encodable.

[@SwiftfulThinking]

I think the compiler in Xcode 13 is just super slow compared to Xcode 12 (which is what I used when making this video). Hopefully they fix it in a future release.

[@anzzz119]

I don't fully understand the flow of the data between the views, it will be cool if you can make a video with arrows or something like that will be awesome.

[@SwiftfulThinking]

Hello! I will try to make a diagram in the Github repo soon. The simple structure is that the ViewModel loads the data and then sends it to the View to display on the screen!

[@anzzz119]

@@SwiftfulThinking what I mean is that you create an struct and the in de main view you declare a variable and sign to the struct, but if you create another view you use instead of var test = struct() you say var test : struct is that the same information??

[@anzzz119]

the data is "inside the struct or the var test?

[@leezicai]

when: struct ListRowView: View { @State var item: ItemModel } , withAnimation(.linear){ listViewModel.update(item: item) } did not work. change : var item: ItemModel is normal.

[@felipevilela1834]

having the same problem here :/

[@angadkler4627]

is there a way you can rename the navigation bar title when your in edit mode?

[@shreyaanshpurohit9292]

Where is the presentationMode boot camp video?

[@SwiftfulThinking]

Hi Shreyaansh! I included it within the .sheet() video. The presentationMode is just an environment variable that understands what screen is currently showing on the app. We use it to dismiss the current screen. kzbin.info/www/bejne/mpXVZHhmoZmaf7M

[@ZefsAl]

Sometimes hear the sounds of you scratching your stubble ))

[@vladimirstepanov7246]

top

[@dimflash1987]

🤯

[@stepanfomincev7331]

33:10 can I replace let isCompleted with var isCompleted then toggle the var, its much easier

[@stepanfomincev7331]

hm i guess we added init to not only toggle the completion, it makes sense

[@merakshot9277]

it's much safer to make it let and there is some methods that you can toggle isCompleted without necessarily making it var. you watch swift course there is some keynotes kzbin.info/www/bejne/nYOunaOois9gf5osi=9Nl8CrdJCH6P9Hq7&t=408

[@dugrut1325]

I'm back!

[@김민용-z1q]

20:49

[@James-i6g7m]

you are trying to keep the code clean, but its being really challanging to understand the linking

[@knowledgeispower4953]

sup😇

[@kevintopollaj3167]

Great videos thanks for sharing, I would just suggest to be more careful when you use @State because since it is the state of truth for a specific view you should usually do @State private var. 😀

[@toomee4674]

Hi! I've watched 3x and still don't understand why! IsCompleted works.

[@josephestrada4222]

@Environment(\.dismiss) var dismiss func saveButtonPressed(){ listViewModel.addItem(title: textFieldText) dismiss() } Solution now that @Environment(\.presentationMode) is deprecated