diff --git a/examples/actix_example/src/post.rs b/examples/actix_example/src/post.rs
index 3f74d0ab..21574593 100644
--- a/examples/actix_example/src/post.rs
+++ b/examples/actix_example/src/post.rs
@@ -1,65 +1,17 @@
 use serde::{Deserialize, Serialize};
 use sea_orm::entity::prelude::*;
 
-#[derive(Copy, Clone, Default, Debug, DeriveEntity, Deserialize, Serialize)]
-#[serde(crate = "serde")]
-pub struct Entity;
-
-impl EntityName for Entity {
-    fn table_name(&self) -> &str {
-        "posts"
-    }
-}
-
-#[derive(
-    Clone, Debug, PartialEq, DeriveModel, DeriveActiveModel, Deserialize, Serialize,
-)]
-#[serde(crate = "serde")]
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Deserialize, Serialize)]
+#[sea_orm(table_name = "posts")]
 pub struct Model {
-    #[serde(skip_deserializing, skip_serializing_if = "Option::is_none")]
-    pub id: Option<i32>,
+    #[sea_orm(primary_key)]
+    #[serde(skip_deserializing)]
+    pub id: i32,
     pub title: String,
     pub text: String,
 }
 
-#[derive(Copy, Clone, Debug, EnumIter, DeriveColumn)]
-pub enum Column {
-    Id,
-    Title,
-    Text,
-}
-
-#[derive(Copy, Clone, Debug, EnumIter, DerivePrimaryKey)]
-pub enum PrimaryKey {
-    Id,
-}
-
-impl PrimaryKeyTrait for PrimaryKey {
-    type ValueType = i32;
-
-    fn auto_increment() -> bool {
-        true
-    }
-}
-
-#[derive(Copy, Clone, Debug, EnumIter)]
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
 pub enum Relation {}
 
-impl ColumnTrait for Column {
-    type EntityName = Entity;
-
-    fn def(&self) -> ColumnDef {
-        match self {
-            Self::Id => ColumnType::Integer.def(),
-            Self::Title => ColumnType::String(None).def(),
-            Self::Text => ColumnType::String(None).def(),
-        }
-    }
-}
-
-impl RelationTrait for Relation {
-    fn def(&self) -> RelationDef {
-        panic!()
-    }
-}
 impl ActiveModelBehavior for ActiveModel {}