返回基于记录列在表FK

Question

我有显示供应商成功的查询，但我想现在补充的是哪家厂商已经选择或者不列显示（显示为一个复选框列）。这些选择都存储在包含FK简档，并且选择他们用户名VendorsSelected表。因此，当当前用户查看供应商时，一些供应商会匹配而不是其他供应商。

如何修改查询？注意：Where子句下面将完成只得到供应商，目前用户已经选择了，但我要的是与真/假（复选框）柱子上他们已经选择了每个厂商中显示的所有供应商。

public IEnumerable<BrowseVendorModel> BrowseVendors() 
{ 
    IQueryable<BrowseVendorModel> viewModel = _db.VendorProfiles 
     .Include("VendorsSelected") 
     .Select(s => new BrowseVendorModel 
     { 
      ProfileID = s.ProfileID, 
      Name = s.Name, 
      CompanyName = s.CompanyName, 
      City = s.City, 
      State = s.State, 
      DateCreated = s.DateCreated 
     }) 
     .Where(x => x.VendorsSelected.Select(s => s.UserName).Contains(HttpContext.Current.User.Identity.Name)) 
     .OrderBy(v => v.ProfileID); 

    return viewModel; 
} 

Answer 1

属性Selected（boolean）添加到浏览模式：

public IEnumerable<BrowseVendorModel> BrowseVendors() 
{ 
    IQueryable<BrowseVendorModel> viewModel = _db.VendorProfiles 
     .Include("VendorsSelected") 
     .Select(s => new BrowseVendorModel 
     { 
      ProfileID = s.ProfileID, 
      Name = s.Name, 
      CompanyName = s.CompanyName, 
      City = s.City, 
      State = s.State, 
      DateCreated = s.DateCreated, 
      Selected = x.VendorsSelected.Select(s => s.UserName) 
         .Contains(HttpContext.Current.User.Identity.Name) 
     }) 
     .OrderBy(v => v.ProfileID); 

    return viewModel; 
}