Question

我有一个页面，显示单个测试用例的详细信息。出于某种原因，即使发送$id，我也无法通过此错误。这是我的控制器：

public function show($id)
{
    $data =DB::table('TestCase')->where('TestCaseID', $id);
    return view('managements.testcase-details')->with($data);
}

这是错误：

在View.php第180行中 at HandleExceptions-＆gt; handleError（'2'，'非法偏移类型'，'C：\ xampp \ htdocs \ terkwazmng \ vendor \ laravel \ framework \ src \ Illuminate \ View \ View.php'，'180'，数组（ 'key'=＆gt; object（Builder），'value'=＆gt; null））

Answer 1

你忘记了一点。一个get并设置数据变量名称。您的错误意味着您传递的是查询构建器而不是其结果。第二个错误是您传递NULL值（with中的第二个参数）。

$data =DB::table('TestCase')->where('TestCaseID', $id)->get();
return view('managements.testcase-details')->with('data', $data);

在视图中使用data就像使用数组一样：foreach($data ...)。

Answer 2

此方法解决了我的问题，我在这里以示例方式显示-

我们要使用的类-

<?php

namespace App;

use App\Helpers\ModelMPK; //MPK stands for Multi-column Primary Key handling

class AccountSession extends ModelMPK
{
    protected $hidden = ["account_id", "id"];
    protected $primaryKey = ['account_id', 'session'];
    public $incrementing = false;
}

定制的模型类，我从某处复制了函数，在这里我不能引用他，因为我无法获得从-

中获得的URL

<?php

namespace App\Helpers;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Builder;

class ModelMPK extends Model
{
    /**
     * Set the keys for a save update query.
     *
     * @param  \Illuminate\Database\Eloquent\Builder  $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    protected function setKeysForSaveQuery(Builder $query)
    {
        $keys = $this->getKeyName();
        if(!is_array($keys)){
            return parent::setKeysForSaveQuery($query);
        }

        foreach($keys as $keyName){
            $query->where($keyName, '=', $this->getKeyForSaveQuery($keyName));
        }

        return $query;
    }

    /**
     * Get the primary key value for a save query.
     *
     * @param mixed $keyName
     * @return mixed
     */
    protected function getKeyForSaveQuery($keyName = null)
    {
        if(is_null($keyName)){
            $keyName = $this->getKeyName();
        }

        if (isset($this->original[$keyName])) {
            return $this->original[$keyName];
        }

        return $this->getAttribute($keyName);
    }
}

Answer 3

我在模型中添加了这个


        namespace App;
        use Illuminate\Database\Eloquent\Model;
        use Illuminate\Database\Eloquent\Builder;

        class holding extends Model
        {
            public $timestamps = false;
            public $incrementing = false;
          public $keyType = 'string';
            protected $table = 'tb_holding';
            protected $primaryKey = ['qsymbol','id_user'];
            protected $fillable = ['qsymbol','qlotbuy','qbuyprice','qstoploss','qlaststopls','qbuydate','idnote','id_user'];


            //---> Illegal offset type while updating model 
            //---> because primary key more than 1 --> add this
            //https://laracasts.com/discuss/channels/laravel/illegal-offset-type-while-updating-model?page=1
            protected function setKeysForSaveQuery(Builder $query)
            {
                return $query->where('qsymbol', $this->getAttribute('qsymbol'))
                             ->where('id_user', $this->getAttribute('id_user'));
            }

laravel非法偏移类型错误

3 个答案: