From 35f30088b2fd4f97c39b4af6c4aadecaecffe5a4 Mon Sep 17 00:00:00 2001 From: BlackDex Date: Wed, 18 Mar 2020 18:11:11 +0100 Subject: [PATCH] Fixing issue #759 by disabling Foreign Key Checks. During migrations some queries are out of order regarding to foreign keys. Because of this the migrations fail when the sql database has this enforced by default. Turning of this check during the migrations will fix this and this is only per session. --- src/main.rs | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/main.rs b/src/main.rs index c098ad7..85e9d28 100644 --- a/src/main.rs +++ b/src/main.rs @@ -323,6 +323,16 @@ mod migrations { let connection = crate::db::get_connection().expect("Can't connect to DB"); use std::io::stdout; + + // Disable Foreign Key Checks during migration + use diesel::RunQueryDsl; + #[cfg(feature = "postgres")] + diesel::sql_query("SET CONSTRAINTS ALL DEFERRED").execute(&connection).expect("Failed to disable Foreign Key Checks during migrations"); + #[cfg(feature = "mysql")] + diesel::sql_query("SET FOREIGN_KEY_CHECKS = 0").execute(&connection).expect("Failed to disable Foreign Key Checks during migrations"); + #[cfg(feature = "sqlite")] + diesel::sql_query("PRAGMA defer_foreign_keys = ON").execute(&connection).expect("Failed to disable Foreign Key Checks during migrations"); + embedded_migrations::run_with_output(&connection, &mut stdout()).expect("Can't run migrations"); } }