Register ID of other instances #12451

1 Answer(s)

• 

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  oguzhanagir created one year ago

  Support Team

  Hi @sociomed

  The operation performed here is marked as null when a tenant entity is modified by a different tenant or host user, since there cannot be users who made changes in the relevant tenant. If you want to set LastModifierUserId here, you need to override the SetModificationAuditProperties method in YourDbContext. This method uses the SetModificationAuditProperties method from the EntityAuditingHelper static class. You can write the operations in the SetModificationAuditProperties method in the method we override in YourDbContext. You can set the information of the user who made the change in the relevant place. However, one thing you should pay attention to here is that since the user who made the change will not be in the relevant tenant, it may create an inconsistent result in filtering operations.

  protected override void SetModificationAuditProperties(object entityAsObj, long? userId)
  {
      if (entityAsObj is IHasModificationTime)
      {
          var lastModificationTimeFilter = CurrentUnitOfWorkProvider?.Current?.AuditFieldConfiguration?.FirstOrDefault(e => e.FieldName == AbpAuditFields.LastModificationTime);
          if (lastModificationTimeFilter == null || lastModificationTimeFilter.IsSavingEnabled)
          {
              entityAsObj.As<IHasModificationTime>().LastModificationTime = Clock.Now;
          }
      }
  
      if (!(entityAsObj is IModificationAudited))
      {
          //Entity does not implement IModificationAudited
          return;
      }
  
      var lastModifierUserIdFilter = CurrentUnitOfWorkProvider?.Current?.AuditFieldConfiguration?.FirstOrDefault(e => e.FieldName == AbpAuditFields.LastModifierUserId);
      if (lastModifierUserIdFilter != null && !lastModifierUserIdFilter.IsSavingEnabled)
      {
          return;
      }
  
      var entity = entityAsObj.As<IModificationAudited>();
  
      if (MultiTenancyConfig?.IsEnabled == true)
      {
          if (MultiTenancyHelper.IsMultiTenantEntity(entity) &&
              !MultiTenancyHelper.IsTenantEntity(entity, AbpSession.TenantId))
          {
              //A tenant entity is modified by host or a different tenant
              entity.LastModifierUserId = AbpSession.UserId; //Example
              return;
          }
  
          if (AbpSession.TenantId.HasValue && MultiTenancyHelper.IsHostEntity(entity))
          {
              //Tenant user modified a host entity
              entity.LastModifierUserId = AbpSession.UserId; //Example
              return;
          }
      }
  
      //Finally, set LastModifierUserId!
      entity.LastModifierUserId = userId;
  }
  

  Add

  internal class MultiTenancyHelper
  {
      public static bool IsMultiTenantEntity(object entity)
      {
          return entity is IMayHaveTenant || entity is IMustHaveTenant;
      }
  
      /// <param name="entity">The entity to check</param>
      /// <param name="expectedTenantId">TenantId or null for host</param>
      public static bool IsTenantEntity(object entity, int? expectedTenantId)
      {
          return (entity is IMayHaveTenant && entity.As<IMayHaveTenant>().TenantId == expectedTenantId) ||
                 (entity is IMustHaveTenant && entity.As<IMustHaveTenant>().TenantId == expectedTenantId);
      }
  
      public static bool IsHostEntity(object entity)
      {
          MultiTenancySideAttribute attribute = entity.GetType().GetTypeInfo()
              .GetCustomAttributes(typeof(MultiTenancySideAttribute), true)
              .Cast<MultiTenancySideAttribute>()
              .FirstOrDefault();
  
          if (attribute == null)
          {
              return false;
          }
  
          return attribute.Side.HasFlag(MultiTenancySides.Host);
      }
  }
  

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