Projektdateien hinzufügen.

CocktailWeb/Data/Cocktail.cs

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+namespace CocktailWeb.Data
+{
+    public class Cocktail
+    {
+        public int Id { get; set; }
+        public string Name { get; set; } = "";
+        public string? ImageURL { get; set; }
+        public List<CocktailFlasche> Cocktailflaschen { get; } = new();
+    }
+}

CocktailWeb/Data/CocktailFlasche.cs

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+namespace CocktailWeb.Data
+{
+    public class CocktailFlasche
+    {
+
+        public int Id { get; set; }
+        public int CocktailID { get; set; }
+        public int FlascheID { get; set; }
+        public Flasche Flasche { get; set; }
+        public Cocktail Cocktail { get; set; }
+        public int Reihenfolge { get; set; }
+        public int Menge { get; set; }
+
+    }
+}

CocktailWeb/Data/DbDataContext.cs

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+using Microsoft.EntityFrameworkCore;
+namespace CocktailWeb.Data
+{
+    public class DbDataContext : DbContext
+    {
+
+        protected readonly IConfiguration _configuration;
+
+        public DbSet<Flasche> Flaschen { get; set; }
+        public DbSet<CocktailFlasche> CocktailFlaschen { get; set; }
+        public DbSet<Cocktail> Cocktails { get; set; }
+        public DbDataContext(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            optionsBuilder.UseSqlite(_configuration.GetConnectionString("CocktailDB"));
+        }
+
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            modelBuilder.Entity<Flasche>().ToTable("Flaschen");
+            modelBuilder.Entity<Flasche>().HasData(
+                new Flasche("Jägermeister") { Id = 1 },
+                new Flasche("Wodka") { Id = 2 }
+                );
+
+
+            //    modelBuilder.Entity<Cocktail>().HasMany(c => c.CocktailFlaschen).WithOne(c => c.Cocktail).HasForeignKey(c => c.CocktailID);
+
+
+        }
+    }
+}

CocktailWeb/Data/Flasche.cs

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+namespace CocktailWeb.Data
+{
+    public class Flasche
+    {
+        public int Id { get; set; }
+        public string Name { get; set; } = "";
+        public int? Pos { get; set; }
+
+        public Flasche()
+        {
+        }
+        public Flasche(string name)
+        {
+            Name = name;
+        }
+    }
+}