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.