Question

我有一个名为“产品”的表格，其中有5个字段（编号，标题，价格，数量，总计）。

我的目标是通过产品表格进行计算。创建总价*数量。

数据库-产品

public function up()
    {
        Schema::create('products', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->string('title');
            $table->integer('quantity');
            $table->double('price');
            $table->double('total')->nullable();
            $table->timestamps();
        });
    }

型号-产品

protected  $fillable = ['title', 'quantity', 'price', 'total']; 

    public function setTotalAttribute()
    {
        $this->total = $this->quantity * $this->price; 
    }

    public function getTotalAttribute($value)
    {
        return $value;
    }

**控制器-ProductController **

public function index()
    {
        $products = Product::oldest()->paginate(5);
        return view('admin.products.index', compact('products'))
                  ->with('i', (request()->input('page', 1)-1)*5);
    }


    public function create()
    {

        $products = Product::all();
        return view('admin.products.create', compact('products'));
    }


    public function store(Request $request)
    {
        $request->validate([
                'title' => 'required',
                'quantity' => 'required',
                'price' => 'required',
                'total' => 'required'


        ]);

        Product::create($request->all());

        return redirect()->route('products.index')
                    ->with('success', 'save');
    }

我的问题是在我的视图“ products.create”中，当我对3个字段进行编码时，我有3个字段，什么都没有发生？

Products.create

<form class="panel-body" action="{{route('products.store')}}" method="POST" novalidate>
              @csrf
              <fieldset class="form-group {{ $errors->has('title') ? 'has-error' : '' }}">
                <label for="form-group-input-1">Title</label>
                <input type="text" name="title" id="title" class="form-control" value="{{ old('title')}}"/>
                {!! $errors->first('title', '<span class="help-block">:message</span>') !!}
              </fieldset>

              <fieldset class="form-group {{ $errors->has('quantity') ? 'has-error' : '' }}">
                <label for="form-group-input-1">Quantity</label>
                <input type="text" name="quantity" id="quantity" class="form-control" value="{{ old('quantity')}}"/>
                {!! $errors->first('quantity', '<span class="help-block">:message</span>') !!}
              </fieldset>

              <fieldset class="form-group {{ $errors->has('price') ? 'has-error' : '' }}">
                <label for="form-group-input-1">Price</label>
                <input type="text" name="price" id="price" class="form-control" value="{{ old('price')}}"/>
                {!! $errors->first('price', '<span class="help-block">:message</span>') !!}
              </fieldset>

              <a href="{{route('products.index')}}" class="btn btn-primary pull-right">Back</a>
              <button type="submit" class="btn btn-sm btn-primary">Valider</button>

谢谢您的帮助。

Answer 1

首先，您没有发送任何总值...

 $request->validate([
                'title' => 'required',
                'quantity' => 'required',
                'price' => 'required',
        ]);

只需遵循雄辩的ORM

$product = New Product();
$product-title = $request->title;
$product-quantity = $request->quantity;
$product-price = $request->price;
$product-total = $request->price * $request* quantity;
$product->save();

// redirect（）

Answer 2

增变器将收到在属性上设置的值，因此您的Product模型上的增变器方法应与此类似

public function setTotalAttribute()
{
    $this->attributes['total'] = $this->quantity * $this->price;
}

Laravel的总数量，总价格

2 个答案: