Mastering the implementation of limit and offset in your GET HTTP request

When making a GET request, I need to include parameters: offset: <number>, limit: <number>, and an optional parameter sortBy that accepts fields separated by commas.

What is the best way to define the GET method?

getData(limit: number, offset: number, sortBy?: string) {
    return this.http.get("");
}

interface Request {
   limit: number;
   offset: number;
   sortBy: string;
}

getData(request: Request) {
    return this.http.get("");
}

Alternatively:

interface Request {
   limit: number;
   offset: number;
   sortBy: string[];
}

getData(request: Request) {
    const sortBy = request.sortBy.split(",");
    return this.http.get("");
}

Answer №1

Information is exclusively transferred through Get requests either by utilizing params/query params or by incorporating them into the headers of the request.

In your specific scenario, you must stipulate how the backend endpoint code will receive the data in your get request endpoints, be it as parameters or query params.

Instead of defining an interface, you can simply create a query string and attach it at the end of the endpoint as exemplified below -

getData(limit: number, offset: number, sortBy?: string) {
    let params = `?limit=${limit}&offset=${offset}&sortBy=${sortBy}`
    return this.http.get("https://yourendpoint.com" + params);
}

You can further customize the sortBy attribute based on comma separation for additional flexibility.

Update - Upon completion of the initial request, initiate another HTTP call

this.http.get("https://yourendpoint.com" + params);.subscribe(result => {
    console.log(result);
    // Execute next call here
});

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