update readme

Author: 28810

Extensions/FreeSql.Extensions.EfCoreFluentApi/ICodeFirstExtensions.cs

@@ -8,30 +8,75 @@ namespace FreeSql.Extensions.EfCoreFluentApi
     public static class ICodeFirstExtensions
     {
 
+        public static ICodeFirst Entity<T>(this ICodeFirst codeFirst, Action<EfCoreTableFluent<T>> modelBuilder)
+        {
+            codeFirst.ConfigEntity<T>(tf => modelBuilder(new EfCoreTableFluent<T>(tf)));
+            return codeFirst;
+        }
+
         static void Test()
         {
             ICodeFirst cf = null;
-            cf.Entity<TestInfo>(eb =>
+            cf.Entity<Song>(eb =>
             {
-                eb.Property(b => b.Name).HashColumnType("varchar(50)");
-                eb.Property(b => b.FullName).HashColumnType("varchar(60)");
+                eb.ToTable("tb_song");
+                eb.Ignore(a => a.Field1);
+                eb.Property(a => a.Title).HashColumnType("varchar(50)").IsRequired();
+                eb.Property(a => a.Url).HasMaxLength(100);
+
+                eb.Property(a => a.RowVersion).IsRowVersion();
+                eb.Property(a => a.CreateTime).HasDefaultValueSql("getdate()");
 
-                eb.HasKey(a => a.Id).HasKey(a => new { a.Id, a.Name });
-                eb.HasIndex(a => a.Name).IsUnique().HasName("idx_xxx11");
+                eb.HasKey(a => a.Id);
+                eb.HasIndex(a => a.Title).IsUnique().HasName("idx_xxx11");
+
+                //一对多、多对一
+                eb.HasOne(a => a.Type).HasForeignKey(a => a.TypeId).WithMany(a => a.Songs);
+
+                //多对多
+                eb.HasMany(a => a.Tags).WithMany(a => a.Songs, typeof(Song_tag));
             });
         }
-        class TestInfo
+
+        public class SongType
         {
             public int Id { get; set; }
             public string Name { get; set; }
-            public string FullName { get; set; }
-            public int DefaultValue { get; set; }
+
+            public List<Song> Songs { get; set; }
         }
 
-        public static ICodeFirst Entity<T>(this ICodeFirst codeFirst, Action<EfCoreTableFluent<T>> modelBuilder)
+        public class Song
         {
-            codeFirst.ConfigEntity<T>(tf => modelBuilder(new EfCoreTableFluent<T>(tf)));
-            return codeFirst;
+            public int Id { get; set; }
+            public string Title { get; set; }
+            public string Url { get; set; }
+            public DateTime CreateTime { get; set; }
+
+            public int TypeId { get; set; }
+            public SongType Type { get; set; }
+            public List<Tag> Tags { get; set; }
+
+            public int Field1 { get; set; }
+            public long RowVersion { get; set; }
+        }
+        public class Song_tag
+        {
+            public int Song_id { get; set; }
+            public Song Song { get; set; }
+
+            public int Tag_id { get; set; }
+            public Tag Tag { get; set; }
+        }
+
+        public class Tag
+        {
+            [Column(IsIdentity = true)]
+            public int Id { get; set; }
+
+            public string Name { get; set; }
+
+            public List<Song> Songs { get; set; }
         }
     }
 }

Extensions/FreeSql.Extensions.EfCoreFluentApi/readme.md

@@ -0,0 +1,70 @@
+这个 FreeSql 扩展包，实现与 EfCore FluentApi 95% 相似的使用习惯；
+
+## 以假乱真
+
+```csharp
+static void Test()
+{
+    ICodeFirst cf = null;
+    cf.Entity<Song>(eb =>
+    {
+        eb.ToTable("tb_song");
+        eb.Ignore(a => a.Field1);
+        eb.Property(a => a.Title).HashColumnType("varchar(50)").IsRequired();
+        eb.Property(a => a.Url).HasMaxLength(100);
+
+        eb.Property(a => a.RowVersion).IsRowVersion();
+        eb.Property(a => a.CreateTime).HasDefaultValueSql("getdate()");
+
+        eb.HasKey(a => a.Id);
+        eb.HasIndex(a => a.Title).IsUnique().HasName("idx_xxx11");
+
+        //一对多、多对一
+        eb.HasOne(a => a.Type).HasForeignKey(a => a.TypeId).WithMany(a => a.Songs);
+
+        //多对多
+        eb.HasMany(a => a.Tags).WithMany(a => a.Songs, typeof(Song_tag));
+    });
+}
+
+public class SongType
+{
+    public int Id { get; set; }
+    public string Name { get; set; }
+
+    public List<Song> Songs { get; set; }
+}
+
+public class Song
+{
+    public int Id { get; set; }
+    public string Title { get; set; }
+    public string Url { get; set; }
+    public DateTime CreateTime { get; set; }
+
+    public int TypeId { get; set; }
+    public SongType Type { get; set; }
+    public List<Tag> Tags { get; set; }
+
+    public int Field1 { get; set; }
+    public long RowVersion { get; set; }
+}
+public class Song_tag
+{
+    public int Song_id { get; set; }
+    public Song Song { get; set; }
+
+    public int Tag_id { get; set; }
+    public Tag Tag { get; set; }
+}
+
+public class Tag
+{
+    [Column(IsIdentity = true)]
+    public int Id { get; set; }
+
+    public string Name { get; set; }
+
+    public List<Song> Songs { get; set; }
+}
+```