Laravel 参数 1 传递给

Question

我正在尝试编写代码，但遇到了这个问题。问题是，我做的和我的第一个代码完全一样，但它在那里工作。

CoinflipController.php 第 115 行中的 ErrorException：参数 1 通过 到 App\Http\Controllers\CoinflipController::CoinflipToJson() 必须是 App\Models\Game\Coinflip\Coinflip 的一个实例， Illuminate\Database\Eloquent\Collection 给定，调用 C:\xampp\htdocs\site\app\Http\Controllers\CoinflipController.php 上 第 104 行并定义

硬币翻转文件

<?php

namespace App\Models\Game\Coinflip;

use Illuminate\Database\Eloquent\Model;

class Coinflip extends Model {
    const STATUS_ACTIVE     = 0;
    const STATUS_ROLLING    = 1;
    const STATUS_ENDED      = 2;

    protected $table = 'coinflip';    
    protected $fillable = [
        'status',
        'winner_steam_id',
        'winner_probability',
        'winner_value',
        'hash',
        'ticket',
        'seed',
        'player1',
        'player1_side',
    ];
    protected $dates = [ 'draw_at' ];
    protected $casts = [
        'winner_steam_id' => 'string',
        'winner_probability' => 'float',
        'winner_value' => 'float',
        'ticket' => 'double'
    ];

    public function entry(){
        return $this->hasMany( 'App\Models\Game\Coinflip\CoinflipEntry', 'coinflip_id' );
    }

    public function winner(){
        return $this->hasOne( 'App\User', 'steam_id', 'winner_steam_id' );
    }

    public function getCommissionValue(){
        $val = 0;
        foreach( $this->entry as $entry ){
            foreach( $entry->item as $item ){
                if ( $item->status == CoinflipEntryItem::STATUS_COMMISIONED )
                    $val += (float)$item->price;
            }
        }
        return $val;
    }
}

CoinflipToJson 函数（第一行是错误）

 public function CoinflipToJson( Coinflip $coinflip, $showExtra = false ){
        $canDeposit1 = $coinflip->value * 0.10 + $coinflip->value;
        $canDeposit2 = $coinflip->value - $coinflip->value * 0.10;
        $data = [
            'id' => $coinflip->id,
            'hash' => $coinflip->hash,
            'gameValue' => $coinflip->value,
            'canDeposit1' => $canDeposit1,
            'canDeposit2' => $canDeposit2,
            'skinValue' => 0,
            'skinCount' => 0,
            'timeStart' => $coinflip->created_at->getTimestamp(),
            'timeEnd' => $coinflip->draw_at ? $jackpot->draw_at->getTimestamp() : 0,
            'timeEndIn' => $coinflip->draw_at ? $jackpot->draw_at->getTimestamp() - time() : -1,
            'timeMax' => Setting::of('JackpotExtendTime', 15)->getValue(),
            'entry' => []
        ];

        if ( $showExtra ){
            $data['winningPercentage'] = $coinflip->ticket;
            $data['winnerId'] = $coinflip->winner_steam_id;
            $data['secret'] = $coinflip->seed;
        }

        foreach( $coinflip->entry as $entry ){
            $entryData = $this->entryToJson( $entry );
            $data['entry'][] = $entryData;
            $data['skinValue'] += $entryData['skinValue'];
            $data['skinCount'] += $entryData['skinCount'];
        }
        return $data;
    }

我调用它的代码（第 5 行）

public function current( Request $request ){
    $coinflip = $this->getCurrentGame();
    if($coinflip){
        $data = [
            'current' => $this->CoinflipToJson($coinflip)
        ];
        return response()->json($data);
    } else return response()->json(['error' => 'No Games']);
}

获取当前游戏函数

public function getCurrentGame(){
    $coinflip = Coinflip::where('status', Coinflip::STATUS_ACTIVE)->get();
    return $coinflip;
}

Answer 1

在您的getCurrentGame() 方法中，get() 方法总是返回一个Collection，即使只有一条记录。如果您查询只会返回一条记录，您只需将get() 更改为first()，它将返回记录实例，而不是Collection。