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C++

Google Sheets - Update (Set Values in a Range)

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Sets values in a range of a spreadsheet. This example will demonstrate by first getting a range, then changing some values in the JSON, and then HTTPS PUT the changes back to the Google Sheet.

Chilkat C++ Downloads

C++
#include <CkJsonObject.h>
#include <CkHttp.h>
#include <CkHttpResponse.h>

void ChilkatSample(void)
    {
    bool success = false;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // This example uses a previously obtained access token having permission for the 
    // Google Sheets scope.

    // In this example, Get Google Sheets OAuth2 Access Token, the access
    // token was saved to a JSON file.  This example fetches the access token from the file..
    CkJsonObject jsonToken;
    success = jsonToken.LoadFile("qa_data/tokens/googleSheets.json");
    if (jsonToken.HasMember("access_token") == false) {
        std::cout << "No access token found." << "\r\n";
        return;
    }

    CkHttp http;
    http.put_AuthToken(jsonToken.stringOf("access_token"));

    // First get the cells in the range A1:B5
    http.SetUrlVar("range","Sheet1!A1:B5");
    http.SetUrlVar("spreadsheetId","1_SO2L-Y6nCayNpNppJLF0r9yHB2UnaCleGCKeE4O0SA");
    const char *jsonResponse = http.quickGetStr("https://sheets.googleapis.com/v4/spreadsheets/{$spreadsheetId}/values/{$range}");
    if (http.get_LastMethodSuccess() == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    std::cout << jsonResponse << "\r\n";

    CkJsonObject json;
    json.put_EmitCompact(false);
    json.Load(jsonResponse);

    // A sample response is shown below.

    // {
    //   "range": "Sheet1!A1:B5",
    //   "majorDimension": "ROWS",
    //   "values": [
    //     [
    //       "Item",
    //       "Cost"
    //     ],
    //     [
    //       "Wheel",
    //       "$20.50"
    //     ],
    //     [
    //       "Door",
    //       "$15"
    //     ],
    //     [
    //       "Engine",
    //       "$100"
    //     ],
    //     [
    //       "Totals",
    //       "$135.50"
    //     ]
    //   ]
    // }

    // We're going to change the cost of the Engine to $120, and the Totals to $155.50

    json.put_I(3);
    json.put_J(1);
    json.UpdateString("values[i][j]","$120");
    json.put_I(4);
    json.UpdateString("values[i][j]","$155.50");

    // Show the updated JSON.
    std::cout << json.emit() << "\r\n";

    // Update the Google Sheet using a PUT request.
    json.put_EmitCompact(true);
    const char *urlToUpdate = "https://sheets.googleapis.com/v4/spreadsheets/{$spreadsheetId}/values/{$range}?valueInputOption=USER_ENTERED";
    const char *xyz = http.quickGetStr(urlToUpdate);
    CkHttpResponse resp;
    success = http.HttpJson("PUT",urlToUpdate,json,"application/json",resp);
    if (success == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    // Examine the response..
    std::cout << "response status code = " << resp.get_StatusCode() << "\r\n";
    std::cout << "response body:" << "\r\n";
    std::cout << resp.bodyStr() << "\r\n";

    // A sample response body:

    // {
    //   "spreadsheetId": "1_SO2L-Y6nCayNpNppJLF0r9yHB2UnaCleGCKeE4O0SA",
    //   "updatedRange": "Sheet1!A1:B5",
    //   "updatedRows": 5,
    //   "updatedColumns": 2,
    //   "updatedCells": 10
    // }
    }