Styles was added

models/abstractmodel.h

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+#ifndef ABSTRACTMODEL_H
+#define ABSTRACTMODEL_H
+
+#include <QObject>
+#include <QVariantMap>
+
+class BeerService;
+class AbstractModel : public QObject
+{
+    Q_OBJECT
+
+    Q_PROPERTY(QString entity READ entity CONSTANT)
+
+public:
+    explicit AbstractModel(QObject *parent = nullptr);
+
+    virtual QString entity() const = 0;
+
+public slots:
+    void created(const QVariant &data);
+    void modified(const QVariant &data);
+    void deleted(const QVariant &data);
+    void received(const QVariant &data);
+
+signals:
+    void dataChanged();
+
+protected:
+    BeerService *service() const;
+
+    QVariantMap m_data;
+};
+
+#endif // ABSTRACTMODEL_H