make task max batch size a big integer (#91)

migration/src/lib.rs

@@ -5,6 +5,7 @@ mod m20230211_224853_create_sessions;
 mod m20230211_233835_create_accounts;
 mod m20230217_211422_create_memberships;
 mod m20230322_223043_add_fields_to_task;
+mod m20230512_200213_make_task_max_batch_size_a_big_integer;
 
 pub struct Migrator;
 
@@ -17,6 +18,7 @@ impl MigratorTrait for Migrator {
             Box::new(m20230211_233835_create_accounts::Migration),
             Box::new(m20230217_211422_create_memberships::Migration),
             Box::new(m20230322_223043_add_fields_to_task::Migration),
+            Box::new(m20230512_200213_make_task_max_batch_size_a_big_integer::Migration),
         ]
     }
 }

migration/src/m20230512_200213_make_task_max_batch_size_a_big_integer.rs

@@ -0,0 +1,35 @@
+use sea_orm_migration::prelude::*;
+
+#[derive(DeriveMigrationName)]
+pub struct Migration;
+
+#[async_trait::async_trait]
+impl MigrationTrait for Migration {
+    async fn up(&self, manager: &SchemaManager) -> Result<(), DbErr> {
+        manager
+            .alter_table(
+                Table::alter()
+                    .table(Task::Table)
+                    .modify_column(ColumnDef::new(Task::MaxBatchSize).big_integer().null())
+                    .to_owned(),
+            )
+            .await
+    }
+
+    async fn down(&self, manager: &SchemaManager) -> Result<(), DbErr> {
+        manager
+            .alter_table(
+                Table::alter()
+                    .table(Task::Table)
+                    .modify_column(ColumnDef::new(Task::MaxBatchSize).integer().null())
+                    .to_owned(),
+            )
+            .await
+    }
+}
+
+#[derive(Iden)]
+enum Task {
+    Table,
+    MaxBatchSize,
+}