public void AddDataLog(DataChangeLog log)
{
using (var c = new MongoDbRepository <DataChangeLog>(DBName))
{
c.Add(log);
}
}
public DataChangeLog GetChangeLogs()
{
DataChangeLog dlog = new DataChangeLog();
var changedProps = _tracker.GetChanges(this);
foreach (var trackingMember in changedProps)
{
var log = new ValueLog();
log.Name = trackingMember.name;
log.OldValue = _oldValues.ContainsKey(log.Name) ? _oldValues[log.Name] : null;
log.NewValue = trackingMember.value;
dlog.Add(log);
}
return(dlog);
}
/// <summary>
/// 获取数据变更记录
/// </summary>
/// <param name="context">数据上下文</param>
/// <param name="entity">更改后的数据实体，这个数据实体应该是从数据库里读取出来的才有效</param>
/// <param name="containsIdProp">是否包含外键Id字段</param>
/// <returns></returns>
public static DataChangeLog GetChangeLog(this DbContext context, object entity, bool containsIdProp = true)
{
// 记录变更轨迹
var entry = context.Entry(entity);
var stateEntry =
((IObjectContextAdapter)context).ObjectContext.ObjectStateManager.GetObjectStateEntry(entity);
var currentValues = stateEntry.CurrentValues;
var originalValues = stateEntry.OriginalValues;
//var modifiedProperties = stateEntry.GetModifiedProperties();
var modifiedProperties =
entry.CurrentValues.PropertyNames.Where(propertyName => entry.Property(propertyName).IsModified)
.ToList();
var changelog = new DataChangeLog
{
DateTime = DateTime.Now,
Name = entity.GetTypeDisplayName(),
Type = entity.GetTypeFullName()
};
foreach (var prop in modifiedProperties)
{
var currentValue = currentValues.GetValue(currentValues.GetOrdinal(prop));
var originalValue = originalValues.GetValue(originalValues.GetOrdinal(prop));
if (!originalValue.Equals(currentValue)) // 值已经改变的
{
// 判断是否包含 ID 属性
if (containsIdProp || !prop.ToLower().EndsWith("id"))
{
changelog.DataChangeLogItems.Add(new DataChangeLogItem
{
Name = entity.GetType().GetPropertyDisplayName(prop),
CurrentValue = currentValue,
OriginalValue = originalValue
});
}
}
}
return(changelog);
}