Rxswift: Type 'inout UITextField' does not conform to protocol 'ReactiveCompatible'

[Dharin-shah]

:warning: If you don't have something to report in the following format, it will probably be easier and faster to ask in the slack channel first. :warning:

Short description of the issue:
Previously in swift 2.x I was using
someTextField.rx_text

Then it Changed to (in swift 3.0 update)
someTextField.rx.textInput.text

But now it is giving me this error

when I updated (from pods)
RxCocoa 3.0.0-rc.1 (was 3.0.0-beta.2)
RxSwift 3.0.0-rc.1 (was 3.0.0-beta.2)

// If we can't get a self contained code example that reproduces the issue, there is a big chance we won't be able
// to help you because there is not much we can do.
// Self contained code example means:
// * that we should be able to just run the provided code without changing it.
// * that it will reproduce the issue upon running

**Xcode version**:

Xcode version goes here

**Expected outcome**:

  _what you expect to happen goes here_

**What actually happens**:

  _what actually happens goes here_

:warning: Fields below are optional for general issues or in case those questions aren't related to your issue, but filling them out will increase the chances of getting your issue resolved. :warning:

**Installation method**:
  - [*] CocoaPods
  - [ ] Carthage
  - [ ] Git submodules

**I have multiple versions of Xcode installed**:
  (so we can know if this is a potential cause of your issue)
  - [ ] yes (which ones)
  - [*] no

**Level of RxSwift knowledge**:
  (this is so we can understand your level of knowledge
    and formulate the response in an appropriate manner)
  - [ ] just starting
  - [ ] I have a small code base
  - [*] I have a significant code base

[Dharin-shah]

RxCocoa now provides optional string. Which is why i was getting this error.

[skywalkerlw]

so what's the solution?

[Dharin-shah]

My function wasn't expecting a Driver of Optional String, which is why it game me this error.
someTextfield.rx.text.asDriver() returns Driver<String?>
someTextfield.rx.text returns Observable<String?>

[skywalkerlw]

SomeTextfield.rx.text() is not recognised. Appreciate if you could let me know how I can achieve it.

[Dharin-shah]

Whhoopsie, My Bad
its just firstName.rx.text and not firstName.rx.text()

[xnxin]

I have the same issue, I copy the code from demo, I don`t understand why. how do you solve this problem

[xnxin]

Well, the demo`s parameter is Observable, but when textField.rx.text.asObservable() is Observable, so i modify the parameter to Observable , it working.

[Dharin-shah]

You can use the ControlProperty as an observable since it wraps an observable for that property. Therefore you can subscribe to it just as you subscribe to an Observable.

Here's a gist (commented in the code where ControlProperty is defined)

Initializes control property with a observable sequence that represents property values and observer that enables
binding values to property.

 - parameter values: Observable sequence that represents property values.
 - parameter valueSink: Observer that enables binding values to control property.
 - returns: Control property created with a observable sequence of values and an observer that enables binding values
 to property.

[xnxin]

@Dharin-shah ,thanks, I`ll try this later, and there is any document to introduce how to extend Reactive for struct type?

[aksswami]

I am trying to get observable string from searchBar but I am constantly getting this error. Any help will be appreciated.

 var latestRepositoryName: Observable<String> {
        return searchBar.rx
            .text
            .throttle(0.5, scheduler: MainScheduler.instance)
            .distinctUntilChanged
    }

I am getting error Type 'inout UISearchBar' does not conform to protocol 'ReactiveCompatible'.

[sergdort]

Damn Swift compiler!! 😄
This is because rx.text is ControlProperty<String?> you need to apply map
@kzaher I see a lot of confusion lately, because we decided to be consistent with UIKit,
I remember we had a discussion with you about it in slack but I don't remember how it's ended 🙂

[aksswami]

Thanks @sergdort

Resolved it using RxOptional filterNil() transformer.

[Dharin-shah]

latestRepositoryName must be of type
Observable<String?> or you must explicitely handle it here by using map function and passing you handler to handle optional string
For eg:

var latestRepositoryName : Observable<String>{
        return searchBar.rx.text.throttle(0.5, scheduler : MainScheduler.instance).map(){text -> String in
           if(text == nil){
             return ""
          }else{
       return text!
   }

}
}

[rlam3]

I'm having a similar issue with searchBar...

Was wondering if anybody could give me some pointers on this issue. I need to get the term from search bar and then launch a backend request to server then reload my data.

But I keep getting the following error on rx.text

'inout UISearchBar' does not conform to protocol 'ReactiveCompatible'

 // Rx 
    var latestSearchTerm: Observable<String?>{
        return searchBar.rx.text
            .throttle(0.5, scheduler: MainScheduler.instance)
            .distinctUntilChanged()
            .filterNil()
            .flatMap{ text in
                return text
            }
    }

I'm on XCode 8 and Swift 3

Thanks!

[Dharin-shah]

Filternil might be an issue
Try removing it

[rlam3]

@Dharin-shah Thanks for quick reply. I resolved it using the following:

But I'm not sure if this is the correct way to do it

    var latestSearchResults: Observable<String>{
        return searchBar.rx.text.orEmpty
            .throttle(0.5, scheduler: MainScheduler.instance)
            .distinctUntilChanged()
            .flatMap{ text -> Observable<String> in

                if text.isEmpty{
                    return .just("")
                }

                return .just(text)
            }
    }

[Dharin-shah]

Are you still returning observable

[Dharin-shah]

Oops my mistake

[Dharin-shah]

Why are you flat maping .. if you want string? Observable just return without the flat map and change the return type to string? Observable

[rlam3]

@Dharin-shah Not sure what you are referring to. Do you mind showing me in a code comparison? Thanks!

[Dharin-shah]

Forgive me if i seem ignorant , its just that i am on my phone and cant really test . Once i get back to my laptop will surely check your code.

[amirpervaiz086]

@xnxin meaning asObservable requires optional observable as input? as you said you changed it to I was facing same issue and had to convert my input observable to from . Just want to clear concept why it is required. Thanks in advance