The subscribe method in Angular TS may be marked as deprecated, but worry not as it is still

I have developed a function that retrieves new data from a service file each time it is called.

Here is how the function looks:

onCarChange() {
 this.carService.getCarData(this.selectedCar).subscribe(
  async (response: CarData) => {
   if (response?.data === null) {
    this.showCarData = false;
   } else {
      this.showCarData = true;
   }
  },
  (error) => {
   this.showCarData = false
   console.error(error);
  }
};

The contents of my service.ts file are as follows:

getCarData(carId: string) {
 return this.http.get(API.carData.get(carId));
}

The function is functioning perfectly and as expected, so there are no issues on that front. However, I am currently in the process of cleaning up my code and I have noticed that the subscribe method is crossed out and marked as deprecated. Can anyone provide guidance on removing this deprecation warning? Do I need to refactor the function? If so, what would be the revised version?

angulartypescripterror-handlingdeprecatedsubscribe

Answer №1

In order to proceed, you must provide an observer object.

onCarChange() {
    this.carService.getCarData(this.selectedCar).subscribe({
        next: async (response) => {
            if (response?.data === null) {
                this.showCarData = false;
            } else {
                  this.showCarData = true;
            }
        }, error: (err) => {
            this.showCarData = false
            console.error(err);
        }
    });
};

Answer №2

It appears that the method you are currently using is outdated. For more information, click here.

.subscribe({
   next: () => { ... }, // (required) nextHandler
   error: () => { ... }, // (required) errorHandler
   complete: () => {.. }, // (optional) completeHandler
})

Therefore, in your particular situation, utilize:

onCarChange() {
 this.carService.getCarData(this.selectedCar).subscribe({
    next: async (response) => {
        if (response?.data === null) {
            this.showCarData = false;
        } else {
              this.showCarData = true;
        }
    }, 
    error: (err) => {
        this.showCarData = false
        console.error(err);
    }
  })
};

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