JSON_PRESENT

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Jurek Muszyński edited this page Sep 2, 2019 · 2 revisions

`bool JSON_PRESENT(JSON json, const char *name)`

Description

Checks the field's presence in JSON object.

Returns

true if the field is present, otherwise false.

Example

JSON req={0};

if ( !REQ_DATA )
{
    OUT("<p>Payload is required.</p>");
    return false;
}

if ( !JSON_FROM_STRING(req, REQ_DATA) )
{
    OUT("<p>Payload is not a valid JSON.</p>");
    return false;
}

if ( !JSON_PRESENT(req, "description") )
{
    OUT("<p>Description is required in payload.</p>");
    return false;
}