QNetworkAccessManager PUT method delete Json data over server

[npatil15]

Hi,

I'm trying to update JSON data over a server but it is not updating, its deleting everything even if I send blank data.

Find the implementation below,

        QNetworkAccessManager m_mgr;
        QNetworkRequest m_request;
        QNetworkReply *m_reply;
        QUrl url("https://api.predic8.de/shop/products/10");
        m_request.setUrl(url);
     
        QVariantMap data;
        data.insert("name", "Oranges");
     
        QJsonDocument jsonData = QJsonDocument::fromVariant(data);
        m_reply = m_mgr.put(m_request, jsonData.toJson(QJsonDocument::Indented));
        connect(m_reply, &QNetworkReply::finished, m_reply, &QNetworkReply::deleteLater);

Please help me why it delete the data instead of an update?

[SGaist]

Hi,

That's completely unrelated to Qt. You should check server side the implementation of the "PUT" handler as it's there that this stuff is happening.

[npatil15]

I found the solution,
Setting header solved my issue,

m_request.setHeader( QNetworkRequest::ContentTypeHeader, "application/json" );

Technically I don't understand why its deleting data if I didn't set header.
Can someone explain to me this or does it mandatory to use header?

Thanks

[JKSH]

@npatil15 said in QNetworkAccessManager PUT method delete Json data over server:

I don't understand why its deleting data if I didn't set header.
Can someone explain to me this or does it mandatory to use header?

Like @SGaist said, you must ask your server why.

Most servers that I know don't delete data when the client doesn't provide a header.