保存 laravel 中 table 行的数据

Question

当我尝试保存时，我在一个页面中有多个同名的输入字段，如果我将来自多个 table 行数据的数据保存到数据库中，我会抛出一个 error.how。错误从空值创建默认对象这里 $varientaccesss->variant_id = $request->input('varient'),

控制器

public function storevarient_update(Request $request)
    {
//return $request;
        $varientprice = new Price();
        $varientprice->variant_id = $request->input('varient');
        $varientprice->discount = $request->input('discount');
        $varientprice->price = $request->input('vehicleprice');
        $varientprice->save();


        $varientaccess = new Categoryvariantmapping();

          foreach ($varientaccess as $varientaccesss){

        $varientaccesss->variant_id = $request->input('varient');
        $varientaccesss->cat_id = $request->input('test');
        $varientaccesss->rate = $request->input('cat_price');
        $varientaccesss->status = '0';

       $varientaccess->save();
   }

        return redirect('Varientupdate')->with('success', 'Details  Added Successfully');


    }

dd($request->all);

Answer 1

你可以这样保存

public function storevarient_update(Request $request)
{
    //return $request;
    $varientprice = new Price();
    $varientprice->variant_id = $request->input('varient');
    $varientprice->discount = $request->input('discount');
    $varientprice->price = $request->input('vehicleprice');
    $varientprice->save();
    $cat_id = $request->input('cat_price');
    $test_ids = $request->input('test');
    foreach($test_ids as $key => $test)
    {
        $varientaccesss = new Categoryvariantmapping();
        $varientaccesss = new Categoryvariantmapping();
        $varientaccesss->variant_id = $request->input('varient'),
        $varientaccesss->cat_id = $test,
        $varientaccesss->rate = $cat_id[$key],
        $varientaccesss->status = '0',
        $varientaccess->save();
    }
    return redirect('Varientupdate')->with('success', 'Details  Added Successfully');
}

Answer 2

这样做的目的是初始化一个你即将保存在数据库中的新数据

$varientaccess = new Categoryvariantmapping();

但是你把它放在了循环之外

$varientaccess = new Categoryvariantmapping();

foreach(....)

这意味着无论 foreach 中有多少行，它都只会保存一次，因为它不会再次初始化

所以解决办法是把它放在循环中

foreach(....) {

    $varientaccess = new Categoryvariantmapping();
    $varientaccesss->variant_id = $request->input('varient');
    $varientaccesss->cat_id = $request->input('test');
    $varientaccesss->rate = $request->input('cat_price');
    $varientaccesss->status = '0';

   $varientaccess->save();

}

保存 laravel 中 table 行的数据

Save data from table rows in laravel

php

laravel

laravel-5.5

laravel-5.6