dpot-backend/Infrastructure/Persistence/Configurations/Forum/Posts/PostMediaConfiguration.cs

using Domain.Entities.Forum.Posts;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;

namespace Infrastructure.Persistence.Configurations.Forum.Posts;

public sealed class PostMediaConfiguration : IEntityTypeConfiguration<PostMedia>
{
    public void Configure(EntityTypeBuilder<PostMedia> builder)
    {
        builder.HasIndex(x => x.BoardID);
        builder.HasIndex(x => x.PostID);

        builder.HasOne(x => x.Board).WithMany().HasForeignKey(x => x.BoardID).OnDelete(DeleteBehavior.Restrict);
        builder.HasOne(x => x.Post).WithMany(x => x.PostMedia).HasForeignKey(x => x.PostID).OnDelete(DeleteBehavior.Cascade);

        builder.ToTable("PostMedia", x => x.HasComment("게시글 미디어"));
        builder.HasKey(x => x.ID);
        builder.Property(x => x.ID).ValueGeneratedOnAdd().HasComment("PK");
    }
}