utilizing the setter function called "set()" within HttpParams

Question

utilizing the setter function called "set()" within HttpParams

I am looking to migrate the below method to Angular 7. The issue I am facing is that the data is not being set to the params. Can someone help me figure out why it's not working? It's showing an error message:

Error TS2300: Duplicate identifier 'params'.

updateParamsWithAuth(paramsToSet: HttpParams, appKey: string, fieldToUpdate: string) {
let authToken;
if (appKey && appKey.length > 0) {
  authToken = this.getAccessTokenFromSession();

} else {
  authToken = this.getRSTokenFromSession();
  if (fieldToUpdate === this.FIELD_ACCESS_TOKEN) {
    fieldToUpdate = this.FIELD_RS_TOKEN;
  }
}

// paramsToSet.set(fieldToUpdate, authToken);
let params = new HttpParams().set(fieldToUpdate, authToken);

return params;
}

angular typescript

Answer 1

Answer №1

When calling the updateParamsWithAuth function, you are passing params as a parameter and then declaring it again inside the function. To simplify, you can do the following:

params = new HttpParams().set(field, token);

Alternatively, you can declare it with a different identifier like this:

let httpParams = new HttpParams().set(field, token);

Answer 2

When calling the updateParamsWithAuth function, you are passing params as a parameter and then declaring it again inside the function. To simplify, you can do the following:

params = new HttpParams().set(field, token);

Alternatively, you can declare it with a different identifier like this:

let httpParams = new HttpParams().set(field, token);

Answer 3

Answer №2

When working with parameters in your method, it's important to avoid redeclaring variables that have already been defined.

To fix this issue, simply update the code from

let params = new HttpParams().set(field, token);

to

params = new HttpParams().set(field, token);

However, consider why you need to redefine it here. If you're initializing it again in the method, there may be no need to pass it as a parameter.

Since you already have params within the method, there is likely no reason to initialize it again.

If you do not require the parameter value for params and are creating a new HttpParams object inside the method, consider removing that parameter or utilizing the existing params instead.

In my opinion, the revised code should look like this:

updateParamsWithAuth(params: HttpParams, appKey: string, field: string) {
    let token;
    if (appKey && appKey.length > 0) {
      token = this.getAccessTokenFromSession();
    } else {
      token = this.getRSTokenFromSession();
      if (field === this.FIELD_ACCESS_TOKEN) {
        field = this.FIELD_RS_TOKEN;
      }
    }

    params = params.set(field, token);

    return params;
}

Answer 4

When working with parameters in your method, it's important to avoid redeclaring variables that have already been defined.

To fix this issue, simply update the code from

let params = new HttpParams().set(field, token);

to

params = new HttpParams().set(field, token);

However, consider why you need to redefine it here. If you're initializing it again in the method, there may be no need to pass it as a parameter.

Since you already have params within the method, there is likely no reason to initialize it again.

If you do not require the parameter value for params and are creating a new HttpParams object inside the method, consider removing that parameter or utilizing the existing params instead.

In my opinion, the revised code should look like this:

updateParamsWithAuth(params: HttpParams, appKey: string, field: string) {
    let token;
    if (appKey && appKey.length > 0) {
      token = this.getAccessTokenFromSession();
    } else {
      token = this.getRSTokenFromSession();
      if (field === this.FIELD_ACCESS_TOKEN) {
        field = this.FIELD_RS_TOKEN;
      }
    }

    params = params.set(field, token);

    return params;
}

utilizing the setter function called "set()" within HttpParams

Answer №1

Answer №2

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