transactions

back/persistance/data/relations/GalleryRelationEstablisher.cs

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+using back.DataModels;
+using Microsoft.EntityFrameworkCore;
+
+namespace back.persistance.data.relations;
+
+public class GalleryRelationEstablisher : IRelationEstablisher
+{
+    public void EstablishRelation(ModelBuilder modelBuilder) 
+    {
+        modelBuilder.Entity<Gallery>(entity =>
+        {
+            entity.Property(e => e.IsArchived).HasDefaultValue(0);
+            entity.Property(e => e.IsFavorite).HasDefaultValue(0);
+            entity.Property(e => e.IsPublic).HasDefaultValue(1);
+
+            entity.HasOne(d => d.CreatedByNavigation).WithMany(p => p.Galleries)
+                .HasForeignKey(d => d.CreatedBy)
+                .OnDelete(DeleteBehavior.ClientSetNull);
+
+            entity.HasOne(d => d.Event).WithMany(p => p.Galleries).HasForeignKey(d => d.EventId);
+
+            entity.HasMany(d => d.Photos).WithMany(p => p.Galleries)
+                .UsingEntity<Dictionary<string, object>>(
+                    "GalleryPhoto",
+                    r => r.HasOne<Photo>().WithMany()
+                        .HasForeignKey("PhotoId")
+                        .OnDelete(DeleteBehavior.ClientSetNull),
+                    l => l.HasOne<Gallery>().WithMany()
+                        .HasForeignKey("GalleryId")
+                        .OnDelete(DeleteBehavior.ClientSetNull),
+                    j =>
+                    {
+                        j.HasKey("GalleryId", "PhotoId");
+                        j.ToTable("GalleryPhotos");
+                    });
+
+            entity.HasMany(d => d.Tags).WithMany(p => p.Galleries)
+                .UsingEntity<Dictionary<string, object>>(
+                    "GalleryTag",
+                    r => r.HasOne<Tag>().WithMany()
+                        .HasForeignKey("TagId")
+                        .OnDelete(DeleteBehavior.ClientSetNull),
+                    l => l.HasOne<Gallery>().WithMany()
+                        .HasForeignKey("GalleryId")
+                        .OnDelete(DeleteBehavior.ClientSetNull),
+                    j =>
+                    {
+                        j.HasKey("GalleryId", "TagId");
+                        j.ToTable("GalleryTags");
+                    });
+
+            entity.HasMany(d => d.Users).WithMany(p => p.GalleriesNavigation)
+                .UsingEntity<Dictionary<string, object>>(
+                    "GalleryUserViewer",
+                    r => r.HasOne<User>().WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.ClientSetNull),
+                    l => l.HasOne<Gallery>().WithMany()
+                        .HasForeignKey("GalleryId")
+                        .OnDelete(DeleteBehavior.ClientSetNull),
+                    j =>
+                    {
+                        j.HasKey("GalleryId", "UserId");
+                        j.ToTable("GalleryUserViewers");
+                    });
+        });
+    }
+}