new/Models/SuharevaContext.cs

using System;
using System.Collections.Generic;
using Microsoft.EntityFrameworkCore;

namespace YtYtAvalonia.Models;

public partial class SuharevaContext : DbContext
{
    public SuharevaContext()
    {
        AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
    }

    public SuharevaContext(DbContextOptions<SuharevaContext> options)
        : base(options)
    {
    }

    public virtual DbSet<Availability> Availabilities { get; set; }

    public virtual DbSet<Course> Courses { get; set; }

    public virtual DbSet<User> Users { get; set; }

    public virtual DbSet<UserAndCourse> UserAndCourses { 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=edu.pg.ngknn.ru;Port=5442;Database=Suhareva;Username=33P;Password=12345");

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity<Availability>(entity =>
        {
            entity.HasKey(e => e.Availabilityid).HasName("Availability_pkey");

            entity.ToTable("Availability");

            entity.Property(e => e.Availabilityid)
                .UseIdentityAlwaysColumn()
                .HasColumnName("availabilityid");
            entity.Property(e => e.Title)
                .HasMaxLength(50)
                .HasColumnName("title");
        });

        modelBuilder.Entity<Course>(entity =>
        {
            entity.HasKey(e => e.Courseid).HasName("Course_pkey");

            entity.ToTable("Course");

            entity.Property(e => e.Courseid)
                .UseIdentityAlwaysColumn()
                .HasColumnName("courseid");
            entity.Property(e => e.Availability).HasColumnName("availability");
            entity.Property(e => e.Price).HasColumnName("price");
            entity.Property(e => e.Title)
                .HasMaxLength(50)
                .HasColumnName("title");

            entity.HasOne(d => d.AvailabilityNavigation).WithMany(p => p.Courses)
                .HasForeignKey(d => d.Availability)
                .OnDelete(DeleteBehavior.ClientSetNull)
                .HasConstraintName("Course_availability_fkey");
        });

        modelBuilder.Entity<User>(entity =>
        {
            entity.HasKey(e => e.Userid).HasName("User_pkey");

            entity.ToTable("User");

            entity.Property(e => e.Userid)
                .UseIdentityAlwaysColumn()
                .HasColumnName("userid");
            entity.Property(e => e.Bithday).HasColumnName("bithday");
            entity.Property(e => e.Email)
                .HasMaxLength(50)
                .HasColumnName("email");
            entity.Property(e => e.Login)
                .HasMaxLength(50)
                .HasColumnName("login");
            entity.Property(e => e.Name).HasMaxLength(50);
            entity.Property(e => e.Password).HasMaxLength(50);
            entity.Property(e => e.Patronymic)
                .HasMaxLength(50)
                .HasColumnName("patronymic");
            entity.Property(e => e.Phonenumber).HasColumnName("phonenumber");
            entity.Property(e => e.Surname)
                .HasMaxLength(50)
                .HasColumnName("surname");
        });

        modelBuilder.Entity<UserAndCourse>(entity =>
        {
            entity
                .HasNoKey()
                .ToTable("UserAndCourse");

            entity.Property(e => e.Courseid).HasColumnName("courseid");
            entity.Property(e => e.Userid).HasColumnName("userid");

            entity.HasOne(d => d.Course).WithMany()
                .HasForeignKey(d => d.Courseid)
                .OnDelete(DeleteBehavior.ClientSetNull)
                .HasConstraintName("UserAndCourse_courseid_fkey");

            entity.HasOne(d => d.User).WithMany()
                .HasForeignKey(d => d.Userid)
                .OnDelete(DeleteBehavior.ClientSetNull)
                .HasConstraintName("UserAndCourse_userid_fkey");
        });

        OnModelCreatingPartial(modelBuilder);
    }

    partial void OnModelCreatingPartial(ModelBuilder modelBuilder);
}