Fixed camp settings saving. Added about messagebox. Methods IGridForm::handleNewRecord and IGridForm::handleEditRecord are virtual now.

camp/settings/campsettingsform.cpp

@@ -4,6 +4,7 @@
 
 #include <settingsservice.h>
 #include <QScroller>
+#include <QMessageBox>
 
 CampSettingsForm::CampSettingsForm(QWidget *parent) :
     FormBinder<CampSettings>(parent),
@@ -58,13 +59,47 @@ bool CampSettingsForm::saveRecord()
 
     Service<PersonPrice> personSrv;
     Service<Sale> saleSrv;
+    bool ret = true;
+
+    connect(&personSrv, &IService::dbErrorDelete, [&ret, this](QString){
+        QMessageBox::critical(this, tr("Cannot delete"), tr("Price already used"));
+        ret = false;
+    });
 
     foreach (PersonPricePtr p, personSrv.all()) {
-        personSrv.erase(p);
+        bool found = false;
+        foreach (PersonPricePtr price, m_personPriceModel->list()) {
+            if (price->id() == p->id())
+            {
+                found = true;
+                break;
+            }
+        }
+
+        if (!found)
+        {
+            personSrv.erase(p);
+        }
     }
 
     foreach (PersonPricePtr p, m_personPriceModel->list()) {
-        personSrv.save(p);
+        bool found = false;
+        foreach (PersonPricePtr price, personSrv.all()) {
+            if (price->id() == p->id())
+            {
+                found = true;
+                break;
+            }
+        }
+
+        if (!found)
+        {
+            personSrv.save(p);
+        }
+        else
+        {
+            personSrv.update(p);
+        }
     }
 
     foreach (SalePtr s, saleSrv.all()) {
@@ -75,7 +110,7 @@ bool CampSettingsForm::saveRecord()
         saleSrv.save(s);
     }
 
-    return true;
+    return ret;
 }
 
 void CampSettingsForm::loadEntity()