php - Laravel Eloquent - 将请求保存、更新和删除到相关表中

Question

我正在尝试使用 Laravel 5.4 开发某种 API，并一直在尝试保存、更新和删除销售及其相关的销售详细信息，但在尝试并浏览了大量代码示例后仍然没有取得任何进展这里。我希望能够:

1. 保存销售及其销售明细(无需一一映射字段)
2. 更新销售及其销售详细信息(无需逐一映射字段)
3. 一次删除销售及其详细信息。

下面是我的代码

销售模式关系

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use App\Models\SalesDetail;

class Sale extends Model
{
//
  protected $fillable=[
    'receipt',
    'customer',
    'total_cost',
    'amount_paid',
    'payment_type',
    'discount_percent',
    'discount_amount'

  ];

  // a sale has many sales details
  public function saleDetails(){
    return $this->hasMany('App\Models\SalesDetail');
  }
}

销售明细模型关系

 namespace App\Models;

 use Illuminate\Database\Eloquent\Model;
 use App\Models\Sale;

 class SalesDetail extends Model
 {
  //
  protected $fillable=[
    // 'sales_id',
    'category',
    'menu',
    'unit',
    'quantity',
    'cost'

   ];

   // A sales detail  belongs to a sale
   public function sale(){
    return $this->belongsTo('App\Models\Sale');
   }
 }

销售 Controller - 保存功能(已更新 - 现在工作正常)

public function store(Request $request)
  {
    //Validate request data
     $this->validate($request,['receipt'=>'required']);

     //Save sales without sales details data
    $sale = Sale::create($request->except(['sale_details']));

    //Get sales details data
    $saledetails = $request->sale_details;

    //Loop through sales details
    foreach ($saledetails as $data){

        //Create a new instance of sales details model
        $details = new SalesDetail;

        //fill the model properties (mass assignment) with the data
        $details->fill($data);

        //Save and link sales details to sales 
        $sale->saleDetails()->save($details);

    }

    return 'Sale saved successfully';
}           

销售总监 - 更新功能

 public function update(Request $request, $id)
{
    //
      $this->validate($request,['receipt'=>'required']);

    $sale = Sale::with('saleDetails')->findOrFail($id);

    $input=$request->all();
    $sale->fill($input)->save();

    return 'Sale updated successfully';
}

销售主管 - 删除功能

public function destroy($id)
{
    //
    Sale::with('saleDetails')->whereId($id)->first()->delete();

    return 'Sale deleted sucessfully';
}

示例销售数据

{
"id": 1,
"receipt": "RT124558",
"customer": "John Dumelo",
"total_cost": 1000,
"amount_paid": 900,
"payment_type": "Cash",
"discount_percent": 0.1,
"discount_amount": 100,
"created_at": "2017-06-12 00:00:00",
"updated_at": "2017-06-12 00:00:00",
"sale_details": [
    {
        "id": 1,
        "sale_id": 1,
        "category": "Pizza",
        "menu": "Meat Eater",
        "unit": "Large",
        "quantity": 10,
        "cost": 50,
        "created_at": "2017-06-14 00:00:00",
        "updated_at": "2017-06-14 00:00:00"
    },
    {
        "id": 2,
        "sale_id": 1,
        "category": "Pizza",
        "menu": "Meat Deluze",
        "unit": "Medium",
        "quantity": 5,
        "cost": 30,
        "created_at": "2017-06-14 00:00:00",
        "updated_at": "2017-06-14 00:00:00"
    }
  ]
}

我是 Laravel 的新手，希望我能得到这方面的帮助。先感谢您。

Answer 1

尝试单独保存 Sale 和 SaleDetail 模型，然后通过以下方式将它们关联起来:

$sale->saleDetails()->associate($details); 

根据您的 SaleDetails 模型，您需要对此进行过滤:

"sale_details": [
    {
        "id": 1,
        "sale_id": 1,
        "category": "Pizza",
        "menu": "Meat Eater",
        "unit": "Large",
        "quantity": 10,
        "cost": 50,
        "created_at": "2017-06-14 00:00:00",
        "updated_at": "2017-06-14 00:00:00"
    },
    {
        "id": 2,
        "sale_id": 1,
        "category": "Pizza",
        "menu": "Meat Deluze",
        "unit": "Medium",
        "quantity": 5,
        "cost": 30,
        "created_at": "2017-06-14 00:00:00",
        "updated_at": "2017-06-14 00:00:00"
    }
  ]

只包括这个:

"sale_details": [
    {
        "category": "Pizza",
        "menu": "Meat Eater",
        "unit": "Large",
        "quantity": 10,
        "cost": 50
    },
    {
        "category": "Pizza",
        "menu": "Meat Deluze",
        "unit": "Medium",
        "quantity": 5,
        "cost": 30
    }
  ]