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fix: Update foreign key constraints handling in migration for CurrenciesPegging and CurrenciesInflation

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Natalia Portillo
2025-11-13 03:09:36 +00:00
parent 8e07b6587b
commit 51d0809536
1 changed files with 75 additions and 1 deletions
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76
Marechai.Database/Migrations/20200807234824_FixDumpRequiredFields.cs
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@@ -1,4 +1,4 @@
using Microsoft.EntityFrameworkCore.Migrations;
using Microsoft.EntityFrameworkCore.Migrations;
namespace Marechai.Database.Migrations
{
@@ -15,6 +15,46 @@ namespace Marechai.Database.Migrations
migrationBuilder.AlterColumn<string>("Dumper", "Dumps", nullable: false, oldClrType: typeof(string),
oldType: "varchar(255) CHARACTER SET utf8mb4", oldNullable: true);
// MySQL/MariaDB: Disable foreign key checks to allow column modifications
migrationBuilder.Sql("SET FOREIGN_KEY_CHECKS=0");
// Drop foreign key constraints only if they exist before modifying columns to make them nullable
migrationBuilder.Sql(@"
IF EXISTS (
SELECT 1 FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS
WHERE CONSTRAINT_SCHEMA = DATABASE()
AND TABLE_NAME = 'CurrenciesPegging'
AND CONSTRAINT_NAME = 'FK_CurrenciesPegging_Iso4217_SourceCode'
)
THEN
ALTER TABLE `CurrenciesPegging` DROP FOREIGN KEY `FK_CurrenciesPegging_Iso4217_SourceCode`;
END IF;
");
migrationBuilder.Sql(@"
IF EXISTS (
SELECT 1 FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS
WHERE CONSTRAINT_SCHEMA = DATABASE()
AND TABLE_NAME = 'CurrenciesPegging'
AND CONSTRAINT_NAME = 'FK_CurrenciesPegging_Iso4217_DestinationCode'
)
THEN
ALTER TABLE `CurrenciesPegging` DROP FOREIGN KEY `FK_CurrenciesPegging_Iso4217_DestinationCode`;
END IF;
");
migrationBuilder.Sql(@"
IF EXISTS (
SELECT 1 FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS
WHERE CONSTRAINT_SCHEMA = DATABASE()
AND TABLE_NAME = 'CurrenciesInflation'
AND CONSTRAINT_NAME = 'FK_CurrenciesInflation_Iso4217_CurrencyCode'
)
THEN
ALTER TABLE `CurrenciesInflation` DROP FOREIGN KEY `FK_CurrenciesInflation_Iso4217_CurrencyCode`;
END IF;
");
migrationBuilder.AlterColumn<string>("SourceCode", "CurrenciesPegging", nullable: true,
oldClrType: typeof(string),
oldType: "varchar(3) CHARACTER SET utf8mb4");
@@ -26,6 +66,9 @@ namespace Marechai.Database.Migrations
migrationBuilder.AlterColumn<string>("CurrencyCode", "CurrenciesInflation", nullable: true,
oldClrType: typeof(string),
oldType: "varchar(3) CHARACTER SET utf8mb4");
// Re-enable foreign key checks
migrationBuilder.Sql("SET FOREIGN_KEY_CHECKS=1");
}
protected override void Down(MigrationBuilder migrationBuilder)
@@ -39,6 +82,9 @@ namespace Marechai.Database.Migrations
migrationBuilder.AlterColumn<string>("Dumper", "Dumps", "varchar(255) CHARACTER SET utf8mb4",
nullable: true, oldClrType: typeof(string));
// MySQL/MariaDB: Disable foreign key checks to allow column modifications
migrationBuilder.Sql("SET FOREIGN_KEY_CHECKS=0");
migrationBuilder.AlterColumn<string>("SourceCode", "CurrenciesPegging", "varchar(3) CHARACTER SET utf8mb4",
nullable: false, oldClrType: typeof(string), oldNullable: true);
@@ -49,6 +95,34 @@ namespace Marechai.Database.Migrations
migrationBuilder.AlterColumn<string>("CurrencyCode", "CurrenciesInflation",
"varchar(3) CHARACTER SET utf8mb4", nullable: false,
oldClrType: typeof(string), oldNullable: true);
// Recreate foreign key constraints for Down operation (when reverting to NOT NULL)
migrationBuilder.AddForeignKey(
name: "FK_CurrenciesPegging_Iso4217_SourceCode",
table: "CurrenciesPegging",
column: "SourceCode",
principalTable: "Iso4217",
principalColumn: "Code",
onDelete: ReferentialAction.Cascade);
migrationBuilder.AddForeignKey(
name: "FK_CurrenciesPegging_Iso4217_DestinationCode",
table: "CurrenciesPegging",
column: "DestinationCode",
principalTable: "Iso4217",
principalColumn: "Code",
onDelete: ReferentialAction.Cascade);
migrationBuilder.AddForeignKey(
name: "FK_CurrenciesInflation_Iso4217_CurrencyCode",
table: "CurrenciesInflation",
column: "CurrencyCode",
principalTable: "Iso4217",
principalColumn: "Code",
onDelete: ReferentialAction.Cascade);
// Re-enable foreign key checks
migrationBuilder.Sql("SET FOREIGN_KEY_CHECKS=1");
}
}
}