[英]How to soft-delete records in entity with collection in asp.net core 2?
我的问题是,我不能软删除集合SavePartnerRegistryResource
实体。 这些是我的实体资源,
public class SavePatientsRegistryResource {
public long? PatientFileId { get; set; }
public SavePatientsRegistryResource () {
Partners = new Collection<SavePartnerRegistryResource> ();
}
}
public class SavePartnerRegistryResource {
public string RecordId { get; set; }
public long? PatientFileId { get; set; }
public long? PartnerFileId { get; set; }
public string StartDate { get; set; }
public string EndDate { get; set; }
}
我这样做的方式是,我渴望将实体加载到控制器中,并且用户automapper
将资源从automapper
到实体。 我在AfterMap
处理我的收藏(添加/删除),
.AfterMap((s, d) = >{
foreach(PartnerRegistry partner in d.Partners.ToList()) {
SavePartnerRegistryResource modelPartner = s.Partners.FirstOrDefault(c = >c.PatientFileId == partner.PatientFileId && c.PartnerFileId == partner.PartnerFileId);
if (!s.Partners.Contains(modelPartner)) {
d.Partners.Remove(partner);
}
}
删除SavePatientsRegistryResource
将软删除实体本身,并且从集合SavePartnerRegistryResource
删除的集合BUT将硬删除该记录,而不是将其标记为软删除。 这两个实体在构建模型时都会收到软删除属性。
我在这里想念什么?
我的优先保存方法是
public override Task < int > SaveChangesAsync(bool acceptAllChangesOnSuccess, CancellationToken cancellationToken =
default(CancellationToken)) {
OnBeforeSaving();
return base.SaveChangesAsync(acceptAllChangesOnSuccess, cancellationToken);
}
private void OnBeforeSaving() {
foreach(var entry in ChangeTracker.Entries()) {
if (!EntitiesToExclude().Contains(entry.Entity.ToString())) {
switch (entry.State) {
case EntityState.Added:
entry.CurrentValues["IsDeleted"] = false;
break;
case EntityState.Deleted:
entry.State = EntityState.Modified;
entry.CurrentValues["IsDeleted"] = true;
foreach(var navigationEntry in entry.Navigations.Where(n = >!n.Metadata.IsDependentToPrincipal())) {
if (navigationEntry is CollectionEntry collectionEntry) {
foreach(var dependentEntry in collectionEntry.CurrentValue) { (Entry(dependentEntry)).State = EntityState.Modified;
(Entry(dependentEntry)).CurrentValues["IsDeleted"] = true;
}
} else {
var dependentEntry = navigationEntry.CurrentValue;
if (dependentEntry != null) { (Entry(dependentEntry)).State = EntityState.Modified;
(Entry(dependentEntry)).CurrentValues["IsDeleted"] = true;
}
}
}
break;
}
}
}
}
我的解决办法是
在映射期间忽略集合,并且在AfterMap
删除了集合修改。
我使用AutoMapper.Collection
创建了一个EqualityComparison
地图
CreateMap<SavePartnerRegistryResource, PartnerRegistry> ().EqualityComparison ((s, d) => s.PatientFileId == d.PatientFileId && s.PartnerFileId == d.PartnerFileId);
我将集合映射到单独的List
,
List<PartnerRegistry> patientPartnersModelDataList = mapper.Map<List<SavePartnerRegistryResource>, List<PartnerRegistry>> (model.Partners.ToList (), patient.Partners.ToList ());
现在,我可以按以下方式添加/删除/修改实体,
IEnumerable<PartnerRegistry> partnerRegistryToRemoveList = patient.Partners.ToList ().Except (patientPartnersModelDataList);
IEnumerable<PartnerRegistry> partnerRegistryToAddList = patientPartnersModelDataList.Except (patient.Partners.ToList ());
IEnumerable<PartnerRegistry> partnerRegistryToUpdateList = patient.Partners.ToList ().Intersect (patientPartnersModelDataList.ToList ());
然后我运行foreach
以遍历每个实体,并使用上下文执行添加/删除操作,而不是修改collection
,
为了进行更新,我改为从partnerRegistryToUpdateList
更新集合
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