Id: Clone → Use String as primary key

example-postgres/migrations/20240908062042_schema.sql

@@ -23,6 +23,12 @@ CREATE TABLE users
     last_login      TIMESTAMP             DEFAULT NULL
 );
 
+CREATE TABLE users_with_string_id
+(
+    id              TEXT PRIMARY KEY,
+    first_name      VARCHAR(128) NOT NULL
+);
+
 CREATE TABLE test
 (
     id   SERIAL PRIMARY KEY,

example-postgres/src/main.rs

@@ -57,6 +57,17 @@ struct UpdateUser {
     role: Role,
 }
 
+#[derive(Debug, ormx::Table)]
+#[ormx(table = "users_with_string_id", id = user_id, insertable, deletable)]
+struct UserWithStringId {
+    // `#[ormx(get_one = ..)]` generates `User::get_by_user_id(db, id: String) -> Result<User>` for us
+    #[ormx(column = "id", default, get_one = get_by_user_id)] // map this field to the column "id"
+    user_id: String,
+
+    // just some normal, 'NOT NULL' columns
+    first_name: String,
+}
+
 // these are all enums, created using `CREATE TYPE .. AS ENUM (..);`
 
 #[derive(Debug, Copy, Clone, sqlx::Type)]
@@ -178,4 +189,4 @@ async fn main() -> anyhow::Result<()> {
 
 
     Ok(())
-}
+}

ormx-macros/src/backend/common/table.rs

@@ -21,7 +21,7 @@ pub fn impl_table<B: Backend>(table: &Table<B>) -> TokenStream {
         impl ormx::Table for #table_ident {
             type Id = #id_ty;
 
-            fn id(&self) -> Self::Id { self.#id_ident }
+            fn id(&self) -> Self::Id { self.#id_ident.clone() }
 
             #get
             #stream_all
@@ -83,6 +83,7 @@ fn update<B: Backend>(table: &Table<B>) -> TokenStream {
         table.id.column(),
         bindings.next().unwrap()
     );
+
     let id_argument = &table.id.field;
     let other_arguments = table.fields_except_id().map(TableField::fmt_as_argument);
 

ormx/src/lib.rs

@@ -64,7 +64,7 @@ where
     Self: Sized + Send + Sync + 'static,
 {
     /// Type of the ID column of this table.
-    type Id: 'static + Copy + Send;
+    type Id: 'static + Clone + Send;
 
     /// Returns the id of this row.
     fn id(&self) -> Self::Id;