StudentEnrollmentNew/StudentEnrollment/StudentEnrollmentDatabaseImplement/Models/Course.cs

using StudentEnrollmentContracts.BindingModels;
using StudentEnrollmentContracts.ViewModels;
using StudentEnrollmentDataModels.Models;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace StudentEnrollmentDatabaseImplement.Models
{
	public class Course : ICourseModel
	{
		[Key]
		public int course_id { get; private set; }
		[Required]
		public string name { get; private set; } = string.Empty;
		[Required]
		public int facultyid { get; set; }
        public virtual Faculty Faculty { get; set; }
        [ForeignKey("courseid")]
		public virtual List<StudentCourse> StudentCourses { get; set; } = new();
		public static Course? Create(CourseBindingModel model)
		{
			if (model == null)
			{
				return null;
			}
			return new Course() 
			{ 
				course_id = model.course_id, 
				name = model.name, 
				facultyid = model.facultyid,
			};
		}
		public void Update(CourseBindingModel model)
		{
			if (model == null)
			{
				return;
			}
			name = model.name;
			facultyid = model.facultyid;
		}
		public CourseViewModel GetViewModel => new()
		{
			course_id = course_id,
			name = name,
			facultyid = facultyid,
			FacultyName = Faculty.name,
		};
	}
}