Question

下面的查询使用Z.EntityFramework.Plus.EF6筛选子级。其过滤并正确包含AssetXref实体，但是结果无法包含Child.Parent实体关系

   var result = await _repository.GetQuery<Assets>()
                      .IncludeFilter(x => x.AssetsXRef
                                        .Where(y => y.Child.Perent.ParentID == parentID)
                                        .Select(y => y.Child.Perent)
                                    )
                     .Where(x => x.Active == true)
                     .ToListAsync();

我也尝试过

   var result = await _repository.GetQuery<Assets>()
                      .IncludeFilter(x => x.AssetsXRef
                                        .Where(y => y.Child.Perent.ParentID == parentID)                                        
                                    )
                     .Include(x=>x.AssetsXRef.Select(y=>y.Child.Parent))
                     .Where(x => x.Active == true)
                     .ToListAsync();

Answer 1

IncludeFilter与Include不兼容。即使没有过滤器，您也需要完全使用IncludeFilter

此外，您需要始终在子级上使用完整的父级过滤器

这里是一个例子：

var result = await _repository.GetQuery<Assets>()
                     .IncludeFilter(x => x.AssetsXRef.Where(y => y.Child.Perent.ParentID == parentID))
                     // Might be SelectMany
                     .IncludeFilter(x => x.AssetsXRef.Where(y => y.Child.Perent.ParentID == parentID).Select(y=>y.Child.Parent))
                     .Where(x => x.Active == true)
                     .ToListAsync();

如何使用Z.EntityFramework筛选和包含子级

1 个答案: