entity configuration

Tsi1.Api/Tsi1.DataLayer/Entities/Communication.cs

+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Tsi1.DataLayer.Entities
+{
+    public class Communication
+    {
+        public int Id { get; set; }
+
+        public string Text { get; set; }
+
+        public DateTime ValidUntil { get; set; }
+
+        public Course Course { get; set; }
+
+        public Tenant Tenant { get; set; }
+    }
+}

Tsi1.Api/Tsi1.DataLayer/Entities/Course.cs

@@ -11,6 +11,7 @@ namespace Tsi1.DataLayer.Entities
             StudentCourses = new HashSet<StudentCourse>();
             ProfessorCourses = new HashSet<ProfessorCourse>();
             Sections = new HashSet<Section>();
+            Communications = new HashSet<Communication>();
         }
 
         public int Id { get; set; }
@@ -22,5 +23,7 @@ namespace Tsi1.DataLayer.Entities
         public ICollection<StudentCourse> StudentCourses { get; set; }
         public ICollection<ProfessorCourse> ProfessorCourses { get; set; }
         public ICollection<Section> Sections { get; set; }
+
+        public ICollection<Communication> Communications { get; set; }
     }
 }

Tsi1.Api/Tsi1.DataLayer/Entities/Tenant.cs

@@ -13,6 +13,7 @@ namespace Tsi1.DataLayer.Entities
             Students = new HashSet<Student>();
             Users = new HashSet<User>();
             Surveys = new HashSet<Survey>();
+            Communications = new HashSet<Communication>();
         }
 
         public int Id { get; set; }
@@ -24,5 +25,7 @@ namespace Tsi1.DataLayer.Entities
         public ICollection<Student> Students { get; set; }
         public ICollection<User> Users { get; set; }
         public ICollection<Survey> Surveys { get; set; }
+
+        public ICollection<Communication> Communications { get; set; }
     }
 }

Tsi1.Api/Tsi1.DataLayer/EntityConfiguration/CommunicationConfiguration.cs

+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Tsi1.DataLayer.Entities;
+
+namespace Tsi1.DataLayer.EntityConfiguration
+{
+    public class CommunicationConfiguration : IEntityTypeConfiguration<Communication>
+    {
+        public void Configure(EntityTypeBuilder<Communication> builder)
+        {
+            builder.HasKey(x => x.Id);
+
+            builder.Property(x => x.Text)
+                .IsRequired()
+                .HasColumnType("character varying(1000)");
+
+            builder.Property(x => x.ValidUntil)
+                .IsRequired();
+
+            builder.HasIndex(x => x.ValidUntil);
+        }
+    }
+}