Вытягивание существующей бд

News/News.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.3.32901.215
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "News", "News\News.csproj", "{985E9E32-067A-4DB6-8AE5-19A7495E3CC4}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{985E9E32-067A-4DB6-8AE5-19A7495E3CC4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{985E9E32-067A-4DB6-8AE5-19A7495E3CC4}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{985E9E32-067A-4DB6-8AE5-19A7495E3CC4}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{985E9E32-067A-4DB6-8AE5-19A7495E3CC4}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {C3950A75-07C0-4805-9081-FD72CA18F14C}
+	EndGlobalSection
+EndGlobal

News/News/Author.cs

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+using System;
+using System.Collections.Generic;
+
+namespace News;
+
+/// <summary>
+/// авторы
+/// </summary>
+public partial class Author
+{
+    public int AuthorId { get; set; }
+
+    public string AuthorName { get; set; } = null!;
+
+    public virtual ICollection<News> News { get; set; } = new List<News>();
+}

News/News/Category.cs

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+using System;
+using System.Collections.Generic;
+
+namespace News;
+
+/// <summary>
+/// категории
+/// </summary>
+public partial class Category
+{
+    /// <summary>
+    /// ид категории
+    /// </summary>
+    public int CategoryId { get; set; }
+
+    /// <summary>
+    /// наименование
+    /// </summary>
+    public string CategoryName { get; set; } = null!;
+
+    public virtual ICollection<News> News { get; set; } = new List<News>();
+}

News/News/Comment.cs

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+using System;
+using System.Collections.Generic;
+
+namespace News;
+
+/// <summary>
+/// комментарии
+/// </summary>
+public partial class Comment
+{
+    public int UserId { get; set; }
+
+    public int NewsId { get; set; }
+
+    public string CommentText { get; set; } = null!;
+
+    public virtual News News { get; set; } = null!;
+
+    public virtual User User { get; set; } = null!;
+}

News/News/News.cs

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+using System;
+using System.Collections.Generic;
+
+namespace News;
+
+/// <summary>
+/// новости
+/// </summary>
+public partial class News
+{
+    public int NewsId { get; set; }
+
+    public string NewsName { get; set; } = null!;
+
+    public DateOnly? NewsDate { get; set; }
+
+    public int AuthorId { get; set; }
+
+    public int CategoryId { get; set; }
+
+    public virtual Author Author { get; set; } = null!;
+
+    public virtual Category Category { get; set; } = null!;
+
+    public virtual ICollection<Comment> Comments { get; set; } = new List<Comment>();
+}

News/News/News.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="ConsoleTableExt" Version="3.2.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="7.0.5">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="7.0.3" />
+  </ItemGroup>
+
+</Project>

News/News/NewsContext.cs

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+using System;
+using System.Collections.Generic;
+using Microsoft.EntityFrameworkCore;
+
+namespace News;
+
+public partial class NewsContext : DbContext
+{
+    public NewsContext()
+    {
+    }
+
+    public NewsContext(DbContextOptions<NewsContext> options)
+        : base(options)
+    {
+    }
+
+    public virtual DbSet<Author> Authors { get; set; }
+
+    public virtual DbSet<Category> Categories { get; set; }
+
+    public virtual DbSet<Comment> Comments { get; set; }
+
+    public virtual DbSet<News> News { get; set; }
+
+    public virtual DbSet<User> Users { get; set; }
+
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+#warning To protect potentially sensitive information in your connection string, you should move it out of source code. You can avoid scaffolding the connection string by using the Name= syntax to read it from configuration - see https://go.microsoft.com/fwlink/?linkid=2131148. For more guidance on storing connection strings, see http://go.microsoft.com/fwlink/?LinkId=723263.
+        => optionsBuilder.UseNpgsql("Host=192.168.56.103;Port=5432;Database=news;Username=postgres;Password=54050");
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        modelBuilder.Entity<Author>(entity =>
+        {
+            entity.HasKey(e => e.AuthorId).HasName("author_pkey");
+
+            entity.ToTable("author", tb => tb.HasComment("авторы"));
+
+            entity.Property(e => e.AuthorId)
+                .HasDefaultValueSql("nextval('author_id_seq'::regclass)")
+                .HasColumnName("author_id");
+            entity.Property(e => e.AuthorName)
+                .HasMaxLength(150)
+                .HasColumnName("author_name");
+        });
+
+        modelBuilder.Entity<Category>(entity =>
+        {
+            entity.HasKey(e => e.CategoryId).HasName("category_pkey");
+
+            entity.ToTable("category", tb => tb.HasComment("категории"));
+
+            entity.Property(e => e.CategoryId)
+                .HasDefaultValueSql("nextval('category_id_seq'::regclass)")
+                .HasComment("ид категории")
+                .HasColumnName("category_id");
+            entity.Property(e => e.CategoryName)
+                .HasMaxLength(150)
+                .HasComment("наименование")
+                .HasColumnName("category_name");
+        });
+
+        modelBuilder.Entity<Comment>(entity =>
+        {
+            entity.HasKey(e => new { e.UserId, e.NewsId }).HasName("comment_pkey");
+
+            entity.ToTable("comment", tb => tb.HasComment("комментарии"));
+
+            entity.Property(e => e.UserId).HasColumnName("user_id");
+            entity.Property(e => e.NewsId).HasColumnName("news_id");
+            entity.Property(e => e.CommentText)
+                .HasMaxLength(2000)
+                .HasColumnName("comment_text");
+
+            entity.HasOne(d => d.News).WithMany(p => p.Comments)
+                .HasForeignKey(d => d.NewsId)
+                .HasConstraintName("news_id");
+
+            entity.HasOne(d => d.User).WithMany(p => p.Comments)
+                .HasForeignKey(d => d.UserId)
+                .HasConstraintName("user_id");
+        });
+
+        modelBuilder.Entity<News>(entity =>
+        {
+            entity.HasKey(e => e.NewsId).HasName("news_pkey");
+
+            entity.ToTable("news", tb => tb.HasComment("новости"));
+
+            entity.Property(e => e.NewsId)
+                .HasDefaultValueSql("nextval('news_id_seq'::regclass)")
+                .HasColumnName("news_id");
+            entity.Property(e => e.AuthorId).HasColumnName("author_id");
+            entity.Property(e => e.CategoryId).HasColumnName("category_id");
+            entity.Property(e => e.NewsDate).HasColumnName("news_date");
+            entity.Property(e => e.NewsName)
+                .HasMaxLength(200)
+                .HasColumnName("news_name");
+
+            entity.HasOne(d => d.Author).WithMany(p => p.News)
+                .HasForeignKey(d => d.AuthorId)
+                .OnDelete(DeleteBehavior.ClientSetNull)
+                .HasConstraintName("author_id");
+
+            entity.HasOne(d => d.Category).WithMany(p => p.News)
+                .HasForeignKey(d => d.CategoryId)
+                .OnDelete(DeleteBehavior.ClientSetNull)
+                .HasConstraintName("category_id");
+        });
+
+        modelBuilder.Entity<User>(entity =>
+        {
+            entity.HasKey(e => e.UserId).HasName("user_pkey");
+
+            entity.ToTable("user", tb => tb.HasComment("пользователи"));
+
+            entity.Property(e => e.UserId)
+                .HasDefaultValueSql("nextval('user_id_seq'::regclass)")
+                .HasColumnName("user_id");
+            entity.Property(e => e.UserName)
+                .HasMaxLength(150)
+                .HasColumnName("user_name");
+        });
+        modelBuilder.HasSequence("author_id_seq");
+        modelBuilder.HasSequence("category_id_seq");
+        modelBuilder.HasSequence("comment_id_seq");
+        modelBuilder.HasSequence("news_id_seq");
+        modelBuilder.HasSequence("user_id_seq");
+
+        OnModelCreatingPartial(modelBuilder);
+    }
+
+    partial void OnModelCreatingPartial(ModelBuilder modelBuilder);
+}

News/News/Program.cs

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+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");

News/News/User.cs

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+using System;
+using System.Collections.Generic;
+
+namespace News;
+
+/// <summary>
+/// пользователи
+/// </summary>
+public partial class User
+{
+    public int UserId { get; set; }
+
+    public string UserName { get; set; } = null!;
+
+    public virtual ICollection<Comment> Comments { get; set; } = new List<Comment>();
+}