通过 OnContextCreated() 访问实体部分类中的用户?
我的所有表都有通用的审核字段:modifiedBy、modifiedDateTime 等。
我希望自动设置这些字段,并且可以使用以下代码设置其中的大部分字段:
partial class myEntities
{
partial void OnContextCreated()
{
this.SavingChanges += new EventHandler(Entities_SavingChanges);
}
private void Entities_SavingChanges(object sender, EventArgs e)
{
IEnumerable<ObjectStateEntry> objectStateEntries =
from ose
in this.ObjectStateManager.GetObjectStateEntries(EntityState.Added | EntityState.Modified)
where ose.Entity != null
select ose;
var auditDate = DateTime.Now;
var auditUser = System.Web.HttpContext.Current.User.Identity.Name;//I wish
foreach (ObjectStateEntry entry in objectStateEntries)
{
ReadOnlyCollection<FieldMetadata> fieldsMetaData = entry.CurrentValues.DataRecordInfo.FieldMetadata;
FieldMetadata modifiedField = fieldsMetaData.Where(f => f.FieldType.Name == "ModifiedBy").FirstOrDefault();
if (modifiedField.FieldType != null)
{
string fieldTypeName = modifiedField.FieldType.TypeUsage.EdmType.Name;
if (fieldTypeName == PrimitiveTypeKind.String.ToString())
{
entry.CurrentValues.SetString(modifiedField.Ordinal, auditUser);
}
}
}
}
}
问题是,似乎没有任何方法可以获取当前用户的访问权限。该应用程序仅适用于 Intranet,使用 Windows 身份验证。
有没有办法传递参数或访问 HttpContext (这似乎不是一个好主意,但我被困住了)?有没有办法用信息填充 EventArgs?
All of my tables have common audit fields: modifiedBy,modifiedDateTime, etc.
I would like to have these automatically set, and can set most of them with the following code:
partial class myEntities
{
partial void OnContextCreated()
{
this.SavingChanges += new EventHandler(Entities_SavingChanges);
}
private void Entities_SavingChanges(object sender, EventArgs e)
{
IEnumerable<ObjectStateEntry> objectStateEntries =
from ose
in this.ObjectStateManager.GetObjectStateEntries(EntityState.Added | EntityState.Modified)
where ose.Entity != null
select ose;
var auditDate = DateTime.Now;
var auditUser = System.Web.HttpContext.Current.User.Identity.Name;//I wish
foreach (ObjectStateEntry entry in objectStateEntries)
{
ReadOnlyCollection<FieldMetadata> fieldsMetaData = entry.CurrentValues.DataRecordInfo.FieldMetadata;
FieldMetadata modifiedField = fieldsMetaData.Where(f => f.FieldType.Name == "ModifiedBy").FirstOrDefault();
if (modifiedField.FieldType != null)
{
string fieldTypeName = modifiedField.FieldType.TypeUsage.EdmType.Name;
if (fieldTypeName == PrimitiveTypeKind.String.ToString())
{
entry.CurrentValues.SetString(modifiedField.Ordinal, auditUser);
}
}
}
}
}
The problem is that there doesn't appear to be any way to get access to the current user. The app is intranet only, using Windows auth.
Is there a way to either pass in a parameter, or get access to the HttpContext (which doesn't seem like it would be a good idea, but I'm stuck)? Is there a way to populate the EventArgs with information?
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查看发帖者重写了 SaveChanges 方法的部分(页面下方的第 6 个代码框)。这样您就可以传入 UserID 并执行审核,而不必使用事件处理程序。
Check out the section where the poster has overridden the SaveChanges method (6th code box down on the page). This way you can pass in the UserID and perform your audit and not have to use an event handler.