Determine changes when getting an updated pass

src/pkpass/pass.cpp

@@ -391,6 +391,15 @@ Field Pass::field(const QString& key) const
     return {};
 }
 
+QVector<Field> Pass::fields() const
+{
+    QVector<Field> fs;
+    for (unsigned int i = 0; i < fieldNameCount; ++i) {
+        fs += d->fields(QLatin1String(fieldNames[i]), this);
+    }
+    return fs;
+}
+
 Pass *Pass::fromData(const QByteArray &data, QObject *parent)
 {
     std::unique_ptr<QBuffer> buffer(new QBuffer);

src/pkpass/pass.h

@@ -105,6 +105,8 @@ public:
 
     /** Returns the field with key @p key. */
     Field field(const QString &key) const;
+    /** Returns all fields found in this pass. */
+    QVector<Field> fields() const;
 
     /** Returns all barcodes defined in the pass. */
     QVector<Barcode> barcodes() const;