Simple method for wrestling with objects in TypeScript HTTP POST responses

Can anyone help me understand how to extract information from an object received through an HTTP POST request?

Below is the code I am using:

this.http.post(url, user, httpOptions).subscribe(result => {
  console.log(result.status);
});

The issue arises when trying to access 'status' in console.log()

An error message displays: Property 'status' does not exist on type 'Object'.

How can I properly unwrap the response object stored in the result variable and access individual values in TypeScript?

If I use console.log(result), I can see all the values.

angulartypescripthttppostgoogle-cloud-functions

Answer №1

If you want to access the entire HttpResponse in your httpOptions, be sure to include observe: 'response'. By default, the behavior is set to observe: 'body', which returns an Observable of the response body. More information on this can be found here.

I've put together a demo on StackBlitz showcasing how to implement this (check the console output).

this.http.post(url, user, {
   ...httpOptions,
   observe: 'response'
}).subscribe(result => {
  console.log(result.status);
});

The error message you're receiving is related to TypeScript. The response is being inferred as type Object, which doesn't have a status property. It's important for types to be accurate. As a workaround, you could cast the response to any.

this.http.post(url, user, httpOptions).subscribe(result => {
  console.log((result as any).status);
});

However, I recommend investigating why the response is initially inferred as Object rather than resorting to typecasting.

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