php - Laravel 4.2 Eloquent : How can i return the count of id based on the following query?

Question

这是我的 Eloquent 模型。

public function getRecordCount($id = NULL){
            if ($id == 0) {
                $count = $this->leftJoin('liip_user_customers', 'warehouse_to', '=', 'liip_user_customers.customer_id')
                            ->where('status', '=', $id)
                            ->where('created_by_id', '=', Auth::user()->id)
                            ->select('id')
                            ->count('id');

                    if (!empty($count)) {
                        return $count;
                    }else{
                        return 0;
                    }
    }
}

<小时/>

这是在我的 Controller 上。

public function getIndex(){
        $count_approval = $this->warehouse_transfer->getRecordCount(0);
        $count_correction = $this->warehouse_transfer->getRecordCount(14);
        $count_final = $this->warehouse_transfer->getRecordCount(13);
        $count_pending = $this->warehouse_transfer->getRecordCount(15);

        // Title
        $title = Lang::get('liipWarehousePalletTransfer::warehousePalletTransfer/title.warehouse_pallet_transfers_management');

        // Show the page
        return View::make('liipWarehousePalletTransfer::index', compact( 'title', 'count_approval', 'count_correction', 'count_close', 'count_disapprove', 'count_final', 'count_pending'));
}

我遇到了一些错误:

SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'id' 
    in field list is ambiguous (SQL: select count(`id`) as aggregate from
    `liip_warehouse_pallet_transfers` left join `liip_user_customers` on
    `warehouse_to` = `liip_user_customers`.`customer_id` where `status` = 0
    and `created_by_id` = 159)

Check the attached image

“待批准”选项卡中的徽章应为“5”。 我已经搜索过这个问题，但找不到与我相同的场景。

Answer 1

$this->leftJoin('liip_user_customers', 
        'warehouse_to', '=', 'liip_user_customers.customer_id')

发生错误的原因是您在左联接中缺少表名称TABLE_NAME.warehouse_to

参见Laravel Join了解更多信息