littleshop/LittleShop/Migrations/20251003173458_AddVariantPricing.cs
SysAdmin d9efababa6 Feature: Add product variant price override support
Enables individual variants to have their own prices, overriding the base product price.

**Database Changes:**
- Added Price (decimal?, nullable) to ProductVariants table
- Added ProductVariantId to OrderItems table with foreign key relationship
- Created index on OrderItems.ProductVariantId for performance

**API Changes:**
- ProductVariantDto: Added Price field
- CreateProductVariantDto: Added Price field with validation
- UpdateProductVariantDto: Added Price field
- OrderItemDto: Added ProductVariantId and ProductVariantName
- CreateOrderItemDto: Added ProductVariantId

**Business Logic:**
- OrderService: Variant price overrides base price (but multi-buy takes precedence)
- ProductService: All variant CRUD operations support Price field

**Admin UI:**
- CreateVariant: Price input with £ symbol and base price placeholder
- EditVariant: Price editing with £ symbol
- ProductVariants list: Shows variant price or "(base)" indicator

**Client Library:**
- Updated all DTOs to match server-side changes
- Full support for variant pricing in order creation

**Migration:**
- EF Core migration: 20251003173458_AddVariantPricing
- Backward compatible: NULL values supported for existing data

**Use Case:**
Products with size/color variants can now have different prices:
- Small T-shirt: £15.00 (variant override)
- Medium T-shirt: £18.00 (uses base price)
- Large T-shirt: £20.00 (variant override)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-10-03 18:35:43 +01:00

60 lines
1.8 KiB
C#

using System;
using Microsoft.EntityFrameworkCore.Migrations;
#nullable disable
namespace LittleShop.Migrations
{
/// <inheritdoc />
public partial class AddVariantPricing : Migration
{
/// <inheritdoc />
protected override void Up(MigrationBuilder migrationBuilder)
{
migrationBuilder.AddColumn<decimal>(
name: "Price",
table: "ProductVariants",
type: "TEXT",
nullable: true);
migrationBuilder.AddColumn<Guid>(
name: "ProductVariantId",
table: "OrderItems",
type: "TEXT",
nullable: true);
migrationBuilder.CreateIndex(
name: "IX_OrderItems_ProductVariantId",
table: "OrderItems",
column: "ProductVariantId");
migrationBuilder.AddForeignKey(
name: "FK_OrderItems_ProductVariants_ProductVariantId",
table: "OrderItems",
column: "ProductVariantId",
principalTable: "ProductVariants",
principalColumn: "Id");
}
/// <inheritdoc />
protected override void Down(MigrationBuilder migrationBuilder)
{
migrationBuilder.DropForeignKey(
name: "FK_OrderItems_ProductVariants_ProductVariantId",
table: "OrderItems");
migrationBuilder.DropIndex(
name: "IX_OrderItems_ProductVariantId",
table: "OrderItems");
migrationBuilder.DropColumn(
name: "Price",
table: "ProductVariants");
migrationBuilder.DropColumn(
name: "ProductVariantId",
table: "OrderItems");
}
}
}