Question

我有store表与product表相关，有product.rating（int）1到5

我想找到平均产品评级为3星或任何基于我的帖子数据的商店

我的代码

$store = new Store;
if ((int)$request->input('store-rating')>0) {
    $store->whereHas('product',function($query) use($request) {
        $rate = $request->input('product-rating');
        $query->where(DB::raw('AVG(rating)'),$rate);
    });
}
$store->with('product');
$thestore = $store->paginate(6);

return $thestore;

它始终返回所有数据，例如忽略我的POST store-rating值

这是我的模特

<?php

namespace App;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Scope;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Foundation\Auth\User as AuthUser;
use Illuminate\Support\Facades\Auth;
use App\ModelBuilder;

class Store extends AuthUser
{
    use SoftDeletes;

    protected $guarded = [];
    protected $dates = ['deleted_at'];

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


}

解决方案

如下所述，我应该使用groupBy和havingRaw来使查询正常工作，但事实证明这不是我在代码中唯一的问题

我将代码更改为：

$store = Store::with('session');
if ((int)$request->input('store-rating')>0) {
    $store->whereHas('product',function($query) use($request) {
        $rate = $request->input('product-rating');
        $query->groupBy('rating')->havingRaw('AVG(rating) = '.$rate);
    });
}
$thestore = $store->paginate(6);

return $thestore;

似乎我无法使用$store = new Store;来启动我的模型查询

希望这可以帮助他人。

Answer 1

尝试使用havingRaw

$query->grouBy('rating')->havingRaw('AVG(rating) = '.$rate);

不要忘记小组

Laravel Eloquent Relationship AVG有

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