30 lines
1.1 KiB
PHP
30 lines
1.1 KiB
PHP
<?php
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use Illuminate\Database\Migrations\Migration;
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use Illuminate\Database\Schema\Blueprint;
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use Illuminate\Support\Facades\Schema;
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return new class extends Migration
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{
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public function up(): void
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{
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Schema::create('stocks', function (Blueprint $table) {
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$table->id();
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$table->string('sku_code')->index()->comment('商品编码');
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$table->string('sku_name')->comment('商品名称（冗余）');
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$table->foreignId('warehouse_id')->constrained()->onDelete('cascade');
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$table->integer('quantity')->default(0)->comment('实际库存');
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$table->integer('locked_quantity')->default(0)->comment('锁定库存');
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$table->integer('available_quantity')->storedAs('quantity - locked_quantity')->comment('可用库存（计算字段）');
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$table->integer('warning_threshold')->default(0)->comment('预警阈值');
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$table->timestamps();
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$table->unique(['sku_code', 'warehouse_id']);
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});
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}
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public function down(): void
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{
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Schema::dropIfExists('stocks');
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}
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}; |