Laravel在WhereHas中更新关系列

Question

I wanted to update a column in my model with a wherehas. However, I'm not sure how to do this. Here's my query below

$unused = Sale::whereHas('salesdetails',function($query) {
             $query->where('product_id', '<=', 24)->where('switch', 1);
        })->where(DB::raw("(DATE_FORMAT(transaction_date,'%Y-%m-%d'))"), '<', $now)->update(['switch' => 0]);

Sale Model

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Sale extends Model
{
    protected $table = 'sales';

    protected $primaryKey = 'id';
    public $timestamps = false;

    public function user()
    {
        return $this->belongsTo('App\User', 'member_id', 'id');
    }

    public function guest()
    {
        return $this->belongsTo('App\Guest', 'guest_id', 'id');
    }

    public function salesdetails()
    {
        return $this->hasOne('App\Sales_details','sales_id', 'id');  
    }

    public function discount()
    {
        return $this->hasOne('App\Discount','id', 'discount_id');  
    }
}

Salesdetails Model

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Sales_details extends Model
{
    protected $table = 'sales_details';

    protected $primaryKey = 'id';
    public $timestamps = false;

    public function sale()
    {
        return $this->belongsTo('App\Sale', 'sales_id', 'id');
    }

    public function product()
    {
        return $this->belongsTo('App\Product', 'product_id');
    }


}

In the query above, I want to update all the switches to '0' from the salesdetails relationship. How can I do this one?

Answer 1

Since you are updating the SalesDetails and not the Sale, I would reverse the query so that the update is actually on the SalesDetails instead of the Sale:

Sales_details::whereHas('sale', function($query) use ($now){
    $query->where(DB::raw("(DATE_FORMAT(transaction_date,'%Y-%m-%d'))"), '<', $now)
})->where('product_id', '<=', 24)->where('switch', 1)->update(['switch' => 0]);