[英]What is the best way to combine model results
我试图将两种不同的模型组合为一种模型,以便将结果筛选为一个列表。
模型:
public partial class OverviewItems
{
// Videos and Images combined for overview
[NotMapped]
public List<dynamic> Item { get; set; }
}
我的控制器:
public ActionResult LoadItems(int skip = 0, int take = 4)
{
OverviewItems items = new OverviewItems();
// get al the videos an images, order them by creaton date. Take onyly the latest videos/images combined.
var images = db.Images.Where(i => i != null && i.Items != null && i.Items.Count() > 0).OrderByDescending(i => i.CreatedOn).Take(take).Skip(skip) as IEnumerable<object>;
var videos = db.Videos.Where(v => v != null && !string.IsNullOrEmpty(v.Watch_id)).OrderByDescending(v => v.CreatedOn).Take(take).Skip(skip) as IEnumerable<object>;
items.Item.Add(images);
items.Item.Add(videos);
// ViewBag.Items = images.Concat(videos);
return PartialView("OverviewItems", items);
}
视频和图像是带有项目的实体框架类。
public partial class Videos : OverviewItems
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int Id { get; set; }
[Required]
[StringLength(250, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 2)]
public string Title { get; set; }
图片模型也一样。 但是当然会具有不同的属性。
我也尝试过使用ViewBag,但由于视频和图像的类型不同,即使我将它们转换为动态图像,也无法正常工作。
我错过了哪一部分? 是否有一个简单的解决方案来组合这两个集合,以便我可以轻松地将项目过滤/获取/跳过为一个部分?
public abstract class OverviewItems
{
public abstract string GetTitle();
}
public class Videos : OverviewItems
{
public string videoTitle { get; set; }
public override string GetTitle()
{
return videoTitle;
}
}
public class Images : OverviewItems
{
public string imagesTitle { get; set; }
public override string GetTitle()
{
return imagesTitle;
}
}
IList<OverviewItems> items = new List<OverviewItems>();
var images = db.Images.Where(i => i != null && i.Items != null && i.Items.Count() > 0).OrderByDescending(i => i.CreatedOn).Take(take).Skip(skip).ToList();
var videos = db.Videos.Where(v => v != null && !string.IsNullOrEmpty(v.Watch_id)).OrderByDescending(v => v.CreatedOn).Take(take).Skip(skip).ToList();
items.Add(images);
items.Add(videos);
var filtredItems = items.where(i=>i.GetTitle() == "SomeTitle");
尝试“ Concat”方法
var images = db.Images.Where(i => i != null && i.Items != null && i.Items.Count() > 0).OrderByDescending(i => i.CreatedOn).Take(take).Skip(skip) as IEnumerable<object>;
var videos = db.Videos.Where(v => v != null && !string.IsNullOrEmpty(v.Watch_id)).OrderByDescending(v => v.CreatedOn).Take(take).Skip(skip) as IEnumerable<object>;
var combined = images.Concat(videos);
items.Item.Add(combined);
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