public ChangeEntry(ObjectStateEntry f)
{
Entity = f.Entity;
State = f.State;
OriginalValues = new Dictionary<string, object>();
EntityType = Entity.GetType().GetEntityType();
if (State != EntityState.Modified)
return;
var d = OriginalValues;
foreach (var item in f.GetModifiedProperties())
{
d[item] = f.OriginalValues[item];
}
OriginalValues = d;
}
private void AuditChange(ObjectStateEntry entry)
{
var obj = entry.Entity as IModelObject;
if (obj == null) return;
var audit = new AuditLog
{
Action = entry.State.ToString(),
Changed = DateTime.Now,
ObjectId = obj.Id,
User = Thread.CurrentPrincipal.Identity.Name,
Collection = entry.EntitySet.Name
};
switch (entry.State)
{
case EntityState.Added:
audit.Comment = obj.GetReportHtml();
break;
case EntityState.Modified:
string report = string.Format("<b>{0}</b><br/>", entry.Entity);
foreach (var prop in entry.GetModifiedProperties())
{
var displayFormat = entry.Entity.GetType().GetProperty(prop).GetCustomAttribute<DisplayFormatAttribute>();
string format = displayFormat == null ? "{0}" : displayFormat.DataFormatString;
report += string.Format(
"{0}: {1} => {2}<br/>",
prop,
string.Format(format, entry.OriginalValues[prop]),
string.Format(format, entry.CurrentValues[prop]));
}
audit.Comment = report;
break;
case EntityState.Deleted:
object original;
this.ComparisonContext.TryGetObjectByKey(entry.EntityKey, out original);
audit.Comment = ((IModelObject)original).GetReportHtml();
break;
default:
throw new NotImplementedException("Unhandled state" + entry.State.ToString());
}
this.AuditLog.Add(audit);
}