110 lines
3.3 KiB
C#
110 lines
3.3 KiB
C#
using BlogDataModels.Model;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.ComponentModel.DataAnnotations.Schema;
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using BlogContracts.BindingModel;
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namespace BlogDatabaseImplement.Model
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{
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public class News : INews
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{
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public string Title { get; set; } = string.Empty;
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public string Text { get; set; } = string.Empty;
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public int UserId { get; set; }
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public int Id { get; set; }
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public virtual User User { get; set; }
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private Dictionary<int, (ITag, int)>? _NewsTag = null;
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[NotMapped]
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public Dictionary<int, (ITag, int)> NewsTag
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{
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get
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{
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if (_NewsTag == null)
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{
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_NewsTag = Tags.ToDictionary(recPC => recPC.TagId, recPC => (recPC.Tag as ITag, recPC.Count));
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}
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return _NewsTag;
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}
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}
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[ForeignKey("NewsId")]
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public virtual List<NewsTag> Tags { get; set; } = new();
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[ForeignKey("NewsId")]
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public virtual List<Comment> Comments { get; set; } = new();
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public static News Create(BlogDatabase context, NewsBindingModel model)
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{
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var news = new News()
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{
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Id = model.Id,
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Title = model.Title,
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Text = model.Text,
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UserId = model.UserId
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};
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news.Tags = model.NewsTag.Select(x => new NewsTag
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{
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Tag = context.Tags.First(y => y.Id == x.Key),
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Count = x.Value.Item2
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}).ToList();
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return news;
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}
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public void Update(NewsBindingModel model)
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{
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Title = model.Title;
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Text = model.Text;
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UserId = model.UserId;
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}
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public BlogContracts.ViewModels.NewsViewModel GetViewModel => new()
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{
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Id = Id,
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Title = Title,
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Text = Text,
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UserId = UserId
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};
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public void UpdateTags(BlogDatabase context, NewsBindingModel model)
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{
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var NewsTags = context.NewsTags.Where(rec => rec.NewsId == model.Id).ToList();
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if (NewsTags != null && NewsTags.Count > 0)
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{ // удалили те, которых нет в модели
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context.NewsTags.RemoveRange(NewsTags.Where(rec => !model.NewsTag.ContainsKey(rec.TagId)));
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context.SaveChanges();
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// обновили количество у существующих записей
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foreach (var updateTag in NewsTags)
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{
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updateTag.Count = model.NewsTag[updateTag.TagId].Item2;
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model.NewsTag.Remove(updateTag.TagId);
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}
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context.SaveChanges();
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}
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var News = context.News.First(x => x.Id == Id);
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foreach (var pc in model.NewsTag)
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{
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context.NewsTags.Add(new NewsTag
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{
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News = News,
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Tag = context.Tags.First(x => x.Id == pc.Key),
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Count = pc.Value.Item2
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});
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context.SaveChanges();
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}
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_NewsTag = null;
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}
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}
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}
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