Entity_Framework_Theo/Sources/EntityFrameworkLib/LolContext.cs

using System;
using System.Data.Common;
using Microsoft.EntityFrameworkCore;
using Model;

namespace EntityFrameworkLib
{
    public class LolContext : DbContext
    {
        public DbSet<ChampionEntity> Champions { get; set; }
        public DbSet<CharacteristicEntity> Characteristics { get; set; }
        public DbSet<SkinEntity> Skins { get; set; }
        public DbSet<SkillEntity> Skills { get; set; }
        public DbSet<LargeImageEntity> Images { get; set; }
        public DbSet<RuneEntity> Runes { get; set; }
        public DbSet<RunePageEntity> RunesPage { get; set; }
        public DbSet<RunePageRuneEntity> RunePageRunes { get; set; }
        public LolContext() { }
        public LolContext(DbContextOptions<LolContext> options)
            : base(options) { }

        protected override void OnConfiguring(DbContextOptionsBuilder options)
        {
            if (!options.IsConfigured)
            {
                base.OnConfiguring(options.UseSqlite($"DataSource=projet.Champions.db"));
            }
        }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);

            modelBuilder.Entity<LargeImageEntity>().Property(l => l.Id).ValueGeneratedOnAdd();
            modelBuilder.Entity<CharacteristicEntity>().HasKey(c => new { c.Name, c.ChampionForeignKey });
            modelBuilder.Entity<RunePageRuneEntity>().HasKey(c => new { c.RunePageName, c.RuneName });

            modelBuilder.Entity<ChampionEntity>()
                .HasMany(c => c.RunePages)
                .WithMany(r => r.Champions);
        }
    }
}