New post: "Exploring the latest features in Angular

Looking for help with integrating Angular and SpringREST to fetch data from the backend? Here's my situation: I need to retrieve a JSON string from the backend using a POST request, send it to my site's hosted link, and display it on the user interface. However, I'm unsure about the postMethod function in dataservice.ts.

I tried researching on StackOverflow and found some code that didn't work for me:

Component.ts

import { MyDataService } from './services/my-data.service';
constructor(private posting: MyDataService) {}

ngOnInit() {
  this.posting.postMethod().subscribe(
    (response => { 
      console.log(response)
    }));
}
}

Data-service.ts

@Injectable()

export class MyDataService {

  constructor(private http: Http){}

  postMethod(model: any  ) {
    return this.http.post("http ://", model)
      .map(res => res.json());
  }
}

Answer №1

According to the error message, it is necessary to include the parameter when calling the service.

 this.posting.postMethod(model).subscribe(
    (response => { 
      console.log(response)
  }));

Answer №2

It appears that in your component.ts file, the model is not being passed as a parameter. It is essential to pass the model as a parameter.

this.posting.postMethod(anyData).subscribe(
  (response => { 
    console.log(response)
  }));

If this is not the root cause of the problem, please provide us with details of the error you are experiencing.

Answer №3

The proper method to declare a function within the subscribe block is as follows:

ngOnInit() {
    this.posting.postMethod(model).subscribe(
    (response) => { 
      console.log(response)
    });
}

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