Angular 7 HttpClient response type as class

Question

I am trying to cast my response from a http get call using httpclient and create an instance of a class I have created.

PROBLEM
The HttpClient doesnt seem to create a new instance of my class using the properties of its response object. Please help!

I have tried creating a class vs interface. Not sure what else i need to be doing here.

My Class

export class Escalation {    
  constructor(private NAME: string, private DESCRIPTION: string) { }    

  public get name() {    
    return this.NAME;    
  }

  public set name(name: string) {    
    this.NAME = name;    
  }

  public get description() {    
    return this.DESCRIPTION;    
  }

  public set description(description: string) {    
    this.DESCRIPTION = description;    
  }    
}

My Service

public getEscalation(escalationName) {    
    return this.http.get(`${this.globals.baseRestUrl}/companies/escalations/${escalationName}`);    
  }

My Component

public escalation: Escalation = new Escalation('', '');    

this.companiesService.getEscalation(escalationName).subscribe(    
        (escalationResponse: Escalation) => this.escalation = {    
          ...escalationResponse    
        }, (error: any) => {       
          console.log(error);   
        }    
      );

Expected Result
I was expecting my response to be casted to type Escalation (My class) upon api callback.

Actual Result
the api returns an object like so:

{    
    NAME: 'Escalation 1',    
    DESCRIPTION: 'This is a test description'    
}   

But eventually this.escalation returns undefined

I hope I explained it well. Please let me know if you need more information!

Answer 1

The (escalationResponse: Escalation) line of code isn't really intended to cast the response from the HttpClient but rather to infer what type it is.

You may consider adjusting your code to this.escalation = new Escalation(escalationResponse.NAME, escalationResponse.DESCRIPTION)

I believe this.escalation = { ...escalationResponse } is really only deconstructing the properties anyway.