add enum with string with mysql backend

diesel-rs · Jul 18, 2024 · 3a3e61d · 3a3e61d
1 parent 95fa0fb
commit 3a3e61d
Showing 1 changed file with 26 additions and 0 deletions.
diff --git a/diesel/src/serialize.rs b/diesel/src/serialize.rs
@@ -207,6 207,32 @@ where
 /// }
 /// ```
 ///
 /// Example with String and custom type created by diesel cli
 ///
 /// ```rust
 /// pub mod sql_types {
 /// #[derive(diesel::sql_types::SqlType)]
 /// #[diesel(mysql_type(name = "Enum"))]
 /// pub struct PostEnum; <- generated by diesel cli
 /// }
 /// #[derive(Debug, FromSqlRow, AsExpression, PartialEq, Clone)]
 /// #[diesel(sql_type = PostEnum)]
 /// pub enum Post {
 /// FirstValue,
 /// SecondValue,
 /// }
 ///
 /// impl ToSql<PostEnum, diesel::mysql::Mysql> for Post {
 /// fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, diesel::mysql::Mysql>) -> serialize::Result {
 /// match *self {
 /// Post::FirstValue => out.write_all(b"one")?,
 /// Post::SecondValue => out.write_all(b"two")?,
 /// }
 /// Ok(IsNull::No)
 /// }
 /// }
 /// ```
 ///
 /// Using temporary values as part of the `ToSql` implementation requires additional
 /// work.
 ///