我在尝试将产品附加到订单时遇到以下MYSQL错误:
SQLSTATE [23000]:完整性约束违规:1048列'order_id'不能为空(SQL:插入
order_product
(amount
,history_price
,order_id
,{ {1}})值(1,5.35 ,,))
我已经搜索了一个解决方案,但是我设法找到的所有解决方案似乎都没有使用默认的laravel id作为主键,而我使用的是默认ID。
以下是三次迁移:
product_id
Schema::create('orders', function (Blueprint $table) {
$table->engine = 'InnoDB';
$table->increments('id');
$table->integer('user_id')->unsigned();
$table->integer('status_id')->unsigned();
$table->boolean('visible')->default(true);
$table->string('postal_code');
//$table->string('country');
$table->string('municipality');
$table->string('street');
$table->string('house_number');
$table->timestamps();
});
Schema::table('orders', function($table) {
$table->foreign('user_id')
->references('id')
->on('users')
->onDelete('cascade');
$table->foreign('status_id')
->references('id')
->on('statuses')
->onDelete('cascade');
});
Schema::create('products', function (Blueprint $table) {
$table->engine = 'InnoDB';
$table->increments('id');
$table->string('name', 100);
$table->float('price');
$table->integer('stock');
$table->string('short_description', 240);
$table->string('long_description', 1000);
$table->boolean('visible')->default(true);
$table->string('image_url',240);
$table->timestamps();
});
这是错误来自的代码:
Schema::create('order_product', function (Blueprint $table) {
$table->engine = 'InnoDB';
$table->integer('order_id')->unsigned();
$table->integer('product_id')->unsigned();
$table->float('history_price');
$table->integer('amount');
$table->timestamps();
});
Schema::table('order_product', function($table) {
$table->foreign('order_id')
->references('id')
->on('orders')
->onDelete('cascade');
$table->foreign('product_id')
->references('id')
->on('products')
->onDelete('cascade');
$table->primary(array('order_id', 'product_id'));
});
如果需要,我可以提供定义两者之间关系的模型方法,但是由于这些表遵循标准的laravel约定,我认为没有必要。