QNetworkAccessManager PUT method delete 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);

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);

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

[npatil15]

I found the solution,
Setting header solved my issue,

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

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

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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

[ChristianEhrlicher]

Can someone explain to me this or does it mandatory to use header?

How should we know what your 'server' does at all?

[npatil15]

Hi ChristianEhrlicher,

I'm using a local server, and follow this below tutorial for creating this local server,
https://medium.com/codingthesmartway...r-36da8680136d

[ChristianEhrlicher]

Since this is not C++/Qt I can't help debugging the server.