How to generate HTML pages with pagination for large datasets in Go?

To generate HTML pages with pagination for large datasets in Go, you can follow these steps:

Define your data structure: Create a struct that represents the dataset, including all the necessary fields for each record.

type Record struct {
    // define your fields
}

Fetch the dataset: Write a function that retrieves the dataset from your data source, such as a database or API.

func fetchDataset() ([]Record, error) {
    // implement the logic to fetch the dataset
}

Implement the pagination logic: Create a function that handles pagination. This function should take as input the current page number and the number of records per page, and return the relevant subset of records.

func paginate(records []Record, page int, perPage int) []Record {
    start := (page - 1) * perPage
    end := start + perPage

    if start >= len(records) {
        return []Record{}
    }

    if end > len(records) {
        end = len(records)
    }

    return records[start:end]
}

Generate the HTML: Write a function that generates the HTML markup for displaying the paginated records. This function should take the paginated subset of records and return a string containing the HTML markup.

func generateHTML(records []Record) string {
    // implement the logic to generate the HTML markup
}

Serve the HTML pages: Use a web framework like "net/http" to serve the paginated HTML pages. Implement an HTTP handler function that handles requests for different pages. This function should extract the current page number from the request parameters, call the pagination and HTML generation functions, and return the resulting HTML page.

func handlePage(w http.ResponseWriter, r *http.Request) {
    page := // extract current page number from request parameters

    records, err := fetchDataset()
    if err != nil {
        // handle the error
    }

    perPage := 10 // number of records per page
    paginatedRecords := paginate(records, page, perPage)
    html := generateHTML(paginatedRecords)

    w.Write([]byte(html))
}

Set up the routing: Register the handlePage function as the handler for the desired route using the http.HandleFunc() function.

func main() {
    http.HandleFunc("/page", handlePage)

    // set up other routes and server configuration

    http.ListenAndServe(":8080", nil)
}

Test the application: Run your Go server and access the specified route ("/page" in this example) in a web browser. You should see the paginated HTML page displaying the dataset.

Note: This is a basic example to get you started. You can enhance the code as per your requirements, such as implementing sorting, filtering, or adding navigation links to previous and next pages.