Fix: update many cast enum values (#1178)

src/query/update.rs

@@ -189,7 +189,8 @@ where
         for col in E::Column::iter() {
             let av = model.get(col);
             if av.is_set() {
-                self.query.value(col, av.unwrap());
+                let expr = cast_text_as_enum(Expr::val(av.into_value().unwrap()), &col);
+                self.query.value(col, expr);
             }
         }
         self
@@ -207,7 +208,7 @@ where
 
 #[cfg(test)]
 mod tests {
-    use crate::tests_cfg::{cake, fruit};
+    use crate::tests_cfg::{cake, fruit, lunch_set, sea_orm_active_enums::Tea};
     use crate::{entity::*, query::*, DbBackend};
     use sea_query::{Expr, Value};
 
@@ -294,4 +295,33 @@ mod tests {
             r#"UPDATE "fruit" SET "id" = 3 WHERE "fruit"."id" = 2"#,
         );
     }
+
+    #[test]
+    fn update_7() {
+        assert_eq!(
+            Update::many(lunch_set::Entity)
+                .set(lunch_set::ActiveModel {
+                    tea: Set(Tea::EverydayTea),
+                    ..Default::default()
+                })
+                .filter(lunch_set::Column::Tea.eq(Tea::BreakfastTea))
+                .build(DbBackend::Postgres)
+                .to_string(),
+            r#"UPDATE "lunch_set" SET "tea" = CAST('EverydayTea' AS tea) WHERE "lunch_set"."tea" = CAST('BreakfastTea' AS tea)"#,
+        );
+    }
+
+    #[test]
+    fn update_8() {
+        assert_eq!(
+            Update::one(lunch_set::ActiveModel {
+                id: Unchanged(1),
+                tea: Set(Tea::EverydayTea),
+                ..Default::default()
+            })
+            .build(DbBackend::Postgres)
+            .to_string(),
+            r#"UPDATE "lunch_set" SET "tea" = CAST('EverydayTea' AS tea) WHERE "lunch_set"."id" = 1"#,
+        );
+    }
 }