Styles was added

models/abstractmodel.cpp

@@ -0,0 +1,41 @@
+#include "abstractmodel.h"
+
+#include "services/beerservice.h"
+
+AbstractModel::AbstractModel(QObject *parent)
+    : QObject{parent}
+{
+}
+
+void AbstractModel::created(const QVariant &data)
+{
+    modified(data);
+}
+
+void AbstractModel::modified(const QVariant &data)
+{
+    QVariantMap d = data.toMap();
+    m_data[d.value("id").toString()] = d;
+
+    emit dataChanged();
+}
+
+void AbstractModel::deleted(const QVariant &data)
+{
+    QString id = data.toString();
+    m_data.remove(id);
+
+    emit dataChanged();
+}
+
+void AbstractModel::received(const QVariant &data)
+{
+    m_data = data.toMap();
+
+    emit dataChanged();
+}
+
+BeerService *AbstractModel::service() const
+{
+    return BeerService::instance();
+}