添加项目文件。

2026-05-19 21:55:48 +08:00
parent 4dfb6cd5ae
commit b3e57cd13c
24 changed files with 3074 additions and 0 deletions
--- a/ApplicationDbContext/ApplicationDbContext.cs
+++ b/ApplicationDbContext/ApplicationDbContext.cs
@@ -0,0 +1,64 @@
+using Microsoft.EntityFrameworkCore;
+using WebAppServer1.Models;
+
+namespace WebAppServer1.ApplicationDbContext
+{
+    public class AppDbContext :DbContext
+    {
+        public AppDbContext(DbContextOptions<AppDbContext> options) : base(options) { }
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            // 好友关系双向约束
+            modelBuilder.Entity<Friend>()
+                .HasOne(f => f.User)
+                .WithMany(u => u.Friends)
+                .HasForeignKey(f => f.UserId)
+                .OnDelete(DeleteBehavior.Restrict);
+
+            modelBuilder.Entity<Friend>()
+                .HasOne(f => f.FriendUser)
+                .WithMany()
+                .HasForeignKey(f => f.FriendId)
+                .OnDelete(DeleteBehavior.Restrict);
+
+            // 群成员约束
+            modelBuilder.Entity<GroupMember>()
+                .HasOne(gm => gm.Group)
+                .WithMany(g => g.Members)
+                .HasForeignKey(gm => gm.GroupId);
+
+            modelBuilder.Entity<GroupMember>()
+                .HasOne(gm => gm.User)
+                .WithMany()
+                .HasForeignKey(gm => gm.UserId);
+
+            // 消息约束
+            modelBuilder.Entity<Message>()
+                .HasOne(m => m.Sender)
+                .WithMany(u => u.Messages)
+                .HasForeignKey(m => m.SenderId)
+                .OnDelete(DeleteBehavior.Restrict);
+
+            modelBuilder.Entity<Message>()
+                .HasOne(m => m.Receiver)
+                .WithMany()
+                .HasForeignKey(m => m.ReceiverId)
+                .OnDelete(DeleteBehavior.Restrict);
+
+            modelBuilder.Entity<Message>()
+                .HasOne(m => m.Group)
+                .WithMany()
+                .HasForeignKey(m => m.GroupId);
+        }
+        public DbSet<User> Users { get; set; }
+        public DbSet<Friend> Friends { get; set; }
+        public DbSet<Group> Groups { get; set; }
+        public DbSet<GroupMember> GroupMembers { get; set; }
+        public DbSet<Message> Messages { get; set; }
+        public DbSet<Notification> Notifications { get; set; }
+        public DbSet<FileEntity> Files { get; set; }
+        public DbSet<Tokens> Tokens { get; set; }
+        public DbSet<UserProfileHistory> userProfileHistories { get; set; }
+        public DbSet<LoginRecord> LoginRecords { get; set; }
+    }
+}