Php Laravel-将列添加到现有透视表并添加MUL键

我有一个Laravel pivot表，其中包含多个主键：“order\u id”、“product\u id”、“variation\u id”

我需要在此表中添加一个名为“id”的新列，具体操作如下：

public function up()
    {
        Schema::table('order_product', function (Blueprint $table) 
        {
            $table->integer('id')->unsigned()->after('variation_sku');
        });
    }

public function up()
    {
        Schema::create('order_product', function (Blueprint $table) 
        {
            $table->integer('order_id')->unsigned()->index();
            $table->foreign('order_id')->references('order_id')->on('orders')->onDelete('cascade');
            $table->integer('product_id')->unsigned()->index();
            $table->foreign('product_id')->references('product_id')->on('products')->onDelete('cascade');
            $table->integer('variation_id')->unsigned()->index()->nullable();
            $table->jsonb('variation')->nullable();
            $table->integer('qty');
            $table->string('variation_status')->default('bakery');
            $table->timestamps();
            $table->softDeletes();
            $table->primary(['order_id', 'product_id', 'variation_id']);
        });
    }

我的原始迁移文件如下所示：

public function up()
    {
        Schema::table('order_product', function (Blueprint $table) 
        {
            $table->integer('id')->unsigned()->after('variation_sku');
        });
    }

public function up()
    {
        Schema::create('order_product', function (Blueprint $table) 
        {
            $table->integer('order_id')->unsigned()->index();
            $table->foreign('order_id')->references('order_id')->on('orders')->onDelete('cascade');
            $table->integer('product_id')->unsigned()->index();
            $table->foreign('product_id')->references('product_id')->on('products')->onDelete('cascade');
            $table->integer('variation_id')->unsigned()->index()->nullable();
            $table->jsonb('variation')->nullable();
            $table->integer('qty');
            $table->string('variation_status')->default('bakery');
            $table->timestamps();
            $table->softDeletes();
            $table->primary(['order_id', 'product_id', 'variation_id']);
        });
    }

这次迁移包括我的3个组合键

现在我需要添加新列“id”，并将该列添加到复合键中

---

我在Laravel文档中找不到任何内容，我怀疑这可能不可能，因为这可能会影响此表中的过去记录

您可以删除主键，然后创建一个新的主键：

public function up()
{
    Schema::table('order_product', function (Blueprint $table) 
    {
        $table->integer('id')->unsigned()->after('variation_sku');
        $table->dropPrimary();
        $table->primary(['id', 'order_id', 'product_id', 'variation_id']);
    });
}

---

您可以删除主键，然后创建一个新的主键：

public function up()
{
    Schema::table('order_product', function (Blueprint $table) 
    {
        $table->integer('id')->unsigned()->after('variation_sku');
        $table->dropPrimary();
        $table->primary(['id', 'order_id', 'product_id', 'variation_id']);
    });
}