[在laravel 5.6中sql插入时数组到字符串的转换错误

Question

我正在尝试插入laravel 5.6的order_items表中并得到以下错误

“数组到字符串的转换（SQL：插入order_items（title，order_id，quantity，unit_price，unit_booking_fee）值（扇区1、129、1、1、1、1））”

order_items表架构

    Schema::create('order_items', function ($table) {
        $table->increments('id');
        $table->string('title', 255);
        $table->integer('quantity');
        $table->decimal('unit_price', 13, 2);
        $table->decimal('unit_booking_fee', 13, 2)->nullable();
        $table->unsignedInteger('order_id');
        $table->foreign('order_id')->references('id')->on('orders')->onDelete('cascade');
        $table->softDeletes();
    });

我尝试同时遵循这两个代码，并且都给出相同的错误

        $orderItem = new OrderItem();
        $orderItem->title = $attendee_details['ticket']['title'];
        $orderItem->quantity = $attendee_details['qty'];
        $orderItem->order_id = $order_id;
        $orderItem->unit_price = $attendee_details['ticket']['price']; //0.15
        $orderItem->unit_booking_fee = $attendee_details['ticket']['booking_fee'] + $attendee_details['ticket']['organiser_booking_fee']; //0.01
        $orderItem->save();


        OrderItem::create([
            'title' => 'sector1',//$attendee_details['ticket']['title'],
            'order_id' => $order_id,
            'quantity' => $attendee_details['qty'],
            'unit_price' => 1,
            'unit_booking_fee' => 1
        ]);

我在做什么错？

Answer 1