protected virtual AuditEntity GetAuditEntity(EntityEntry entry, OperationType operationType)
{
var type = entry.Entity.GetType();
var typeName = type.FullName;
string entityId = null;
var properties = new List <AuditProperty>();
foreach (var property in entry.CurrentValues.Properties)
{
if (property.IsConcurrencyToken)
{
continue;
}
var propertyName = property.Name;
var propertyEntry = entry.Property(property.Name);
if (property.IsPrimaryKey())
{
entityId = entry.State == EntityState.Deleted
? propertyEntry.OriginalValue?.ToString()
: propertyEntry.CurrentValue?.ToString();
}
var propertyType = property.ClrType.ToString();
string originalValue = null;
string newValue = null;
if (entry.State == EntityState.Added)
{
newValue = propertyEntry.CurrentValue?.ToString();
}
else if (entry.State == EntityState.Deleted)
{
originalValue = propertyEntry.OriginalValue?.ToString();
}
else if (entry.State == EntityState.Modified)
{
var currentValue = propertyEntry.CurrentValue?.ToString();
originalValue = propertyEntry.OriginalValue?.ToString();
if (currentValue == originalValue)
{
continue;
}
newValue = currentValue;
}
if (string.IsNullOrWhiteSpace(originalValue))
{
// 原值为空，新值不为空则记录
if (!string.IsNullOrWhiteSpace(newValue))
{
properties.Add(new AuditProperty(propertyName, propertyType, originalValue, newValue));
}
}
else
{
if (!originalValue.Equals(newValue))
{
properties.Add(new AuditProperty(propertyName, propertyType, originalValue, newValue));
}
}
}
var auditedEntity = new AuditEntity(typeName, entityId, operationType);
auditedEntity.AddProperties(properties);
return(auditedEntity);
}