Tips for streamlining the use of http.get() with or without parameters

Question

Tips for streamlining the use of http.get() with or without parameters

retrievePosts(userId?: string): Observable<any> {
  const params = userId ? new HttpParams().set('userId', userId.toString()) : null;
  return this.http.get(ApiUrl + ApiPath, { params });
}

I am attempting to streamline the two http.get calls by avoiding the use of if and else statements. Essentially, if a userId is provided, I want to create a query parameter and include it in the API request, otherwise, I do not want to include any parameters.

I experimented with using a ternary operation but encountered an issue:

this.http.get(ApiUrl + ApiPath, userId ? { params } : null);

Upon inspecting the RequestUrl in the browser's inspector, I noticed the request appeared as follows: "api/Post?userId="

angular typescript angular-httpclient

Answer 1

Answer №1

Thank you for showing interest in improving the code.

Here is a more streamlined version:

  getPosts(userID?: string): Observable<any> {
      if (userID) {
        const params = new HttpParams().set('userID', userID.toString());
        return this.http.get(ApiEndpoint + ApiPath, { params })
      } 
      return this.http.get(ApiEndpoint + ApiPath);
    }

The else block is unnecessary as the return statement exits the function.

You can also achieve the same result without the if condition:

this.http.get(ApiEndpoint + ApiPath, userID ? { params } : {})

I hope this helps address your concern. Cheers!

Answer 2

Thank you for showing interest in improving the code.

Here is a more streamlined version:

  getPosts(userID?: string): Observable<any> {
      if (userID) {
        const params = new HttpParams().set('userID', userID.toString());
        return this.http.get(ApiEndpoint + ApiPath, { params })
      } 
      return this.http.get(ApiEndpoint + ApiPath);
    }

The else block is unnecessary as the return statement exits the function.

You can also achieve the same result without the if condition:

this.http.get(ApiEndpoint + ApiPath, userID ? { params } : {})

I hope this helps address your concern. Cheers!

Tips for streamlining the use of http.get() with or without parameters

Answer №1

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