Question

当我尝试向数据库添加新记录时Laravel返回错误：

SQLSTATE [23000]：完整性约束违规：1452无法添加或更新子行：外键约束失败（kurwa_magazyn。transmits，CONSTRAINT transmits_to_user_id_foreign FOREIGN KEY（to_user_id）参考 users（id））（SQL：插入transmits（from_user_id， to_user_id，product_id，quantity，transmit，created_at， updated_at，user_id）值（1,0,1,3,0,2016-08-16 18:08:53， 2016-08-16 18：08：53,1））

    $transmit = new transmit($request->all());
    $transmit['from_user_id'] = $idKey;
    $transmit['to_user_id'] = $idKey2;
    $transmit['product_id'] = $downloadProductsId;
    $transmit['quantity'] = $downloadIlosc;
    $transmit['transmit'] = 0;
    $transmit['created_at'] = $dateNow;
    $transmit['updated_at'] = $dateNow;

    Auth::user()->transmits()->save($transmit);
    //Session::flash('status1', 'Artykuł został dodany poprawnie');
    return redirect('warehouse');

但是当我尝试只添加一个值时，例如$transmit['to_user_id'] = $idKey2;，那么一切正常：

$transmit = new transmit($request->all());
$transmit['to_user_id'] = $idKey2;
Auth::user()->transmits()->save($transmit);
return redirect('warehouse');

我的文件模型transmit.php：

protected $fillable = [
    'id',
    'user_id',
    'from_user_id',
    'to_user_id',
    'product_id',
    'quantity',
    'transmit',
    'created_at',
    'updated_at',
];
public function user(){
    return $this->belongsTo('App\User');
}
public function products(){
    return $this->belongsTo('App\Product');
}

并且文件添加新记录（transferProductUser.php）：

<div class="col-xs-4">
    {!! Form::model(['method'=>'post','class'=>'form-horizontal','action'=>['TransmitsController@updateTransferProduct']]) !!}


                Produkt:
                <select class="form-control selectpicker show-tick" data-live-search="true" data-size="5" name="products" id="products" onchange="copy()">
                  <option selected disabled style="color: orange">Wybierz...</option>
                @foreach( $listProductOfSelectedUser as $listProduct)
                  <option data-subtext="(
                    <?php
                    $sn = DB::table('products')->select('sn')->where('id', '=', $listProduct->product_id)->get();
                    $quantity = DB::table($name_user)->select('quantity')->where('product_id', '=', $listProduct->product_id)->get();
                    ?>
                    @foreach($sn as $serial)
                        @if($serial->sn == '')
                            <i>~brak SN~</i>
                        @elseif($serial->sn)
                            {{ $serial->sn }}
                        @endif
                    @endforeach
                    @foreach($quantity as $ilosc)
                            ) ilość: <b>{{ $ilosc->quantity }} szt.</b>
                    @endforeach

                  " value="{{ $listProduct->product_id }}">

                        <?php
                        $article_name = DB::table('products')->select('article_id')->where('id', '=', $listProduct->product_id)->get();
                        ?>
                        @foreach ($article_name as $name) 
                            {{ article::find($name->article_id)->article_name }}
                        @endforeach

                   </option>
                @endforeach
                </select>

                <br />

                Do:
                <select name="stan2" id="stan2" class="form-control selectpicker show-tick" data-size="5" onchange="run2(event)">
                <option selected disabled>Wybierz...</option>
                  <optgroup id="użytkownicy" value="użytkownicy" label="użytkownicy">
                    @foreach($userListName as $user)
                        <option name="użytkownicy" value="{{ $user->id }}">{{ $user->name }}</option>
                    @endforeach
                  </optgroup>

                  <optgroup id="magazyny" value="magazyny" label="magazyny">

                    @foreach($warehouseList as $warehouse)
                        <option name="magazyny" value="{{ $warehouse->id }}">{{ $warehouse->name_warehouse }}</option>
                    @endforeach
                  </optgroup>
                </select>



              <div class="checkbox">
                <label>
                  <input type="checkbox" id="isAgeSelected"> Podaj ilość produktów do przeniesienia.
                </label>
              </div>

            <input type="number" class='form-control', id="txtAge" name="count" id="txtAge" style="display:none" min='0', max="", placeholder='Podaj ilość produktow do przeniesienia...'>



            <br />

            {!! Form::text('stan_key', 'user,'.$userId, ['class' => 'form-control', 'id'=>'copy']) !!}
            {!! Form::text('stan_key2', null, ['class' => 'form-control', 'id'=>'copy3']) !!}
            {!! Form::text('idProduct', null, ['class' => 'form-control', 'id'=>'copy2']) !!}

            {!! Form::submit('Tak, przenieś', ['class' => 'btn btn-primary']) !!}
            {!! link_to('warehouse', $title = 'Anuluj', ['class' => 'btn btn-danger']) !!}

    {!! Form::close() !!}

</div>


<script>

function run2(event) {
console.log(document.getElementById("użytkownicy").label);
var $id = document.getElementById("stan2").value;
var lable=event.target.options[event.target.selectedIndex].parentNode.label

    if(lable == 'użytkownicy'){

      document.getElementById("copy3").value = "user,"+$id;

    } else if (lable == 'magazyny') {

      document.getElementById("copy3").value = "warehouse,"+$id;
    }

}


document.getElementById('products').onchange = function () {
    document.getElementById('copy2').value = event.target.value  
}


//wyswietlenie inputa z quantity
$('#isAgeSelected').click(function() {
    $("#txtAge").toggle(this.checked);
});

</script>

为什么我不能一次添加所有值？

Answer 1

似乎在你想要的时候

$transmit['to_user_id'] = $idKey2;

您的$ idKey包含null或0。

如果您希望有可能设置空值，则应将此列设为可为空。

Laravel插入记录（外键）

1 个答案: