Initial open source release

backend/database/utils.go

@@ -0,0 +1,23 @@
+package database
+
+import (
+	"fmt"
+
+	"gorm.io/gorm"
+)
+
+type Migrater interface {
+	Migrate(db *gorm.DB) error
+}
+
+func UniqueIndexNameAndNullCompanyID(db *gorm.DB, tableName string) error {
+	// SQLITE / POSTGRES
+	// ensure name + null company id is unique
+	idx := fmt.Sprintf("CREATE UNIQUE INDEX IF NOT EXISTS idx_%s_name_null_company_id ON %s (name) WHERE (company_id IS NULL)", tableName, tableName)
+	res := db.Exec(idx)
+	if res.Error != nil {
+		return fmt.Errorf("error creating index: %v on table %s", res.Error, tableName)
+	}
+
+	return nil
+}