我有这个功能：
public function landings($slug){
$landing = Landing::where('slug', $slug)->firstOrFail();
//use to get categories id stored in DB
$cat = DB::table('landing_categories')->where('landing_id', $landing->id)->get();
foreach ($cat as $key) {
$id[] = $key->category_id;
}
// use to get specifications id and compare it with products that have same specifications id's
$subs = DB::table('landing_specifications')->where('landing_id', $landing->id)
->join('product_subspecification', function ($keys) {
$keys->on('product_subspecification.subspecification_id', '=', 'landing_specifications.subspecification_id');
})
->join('products', 'products.id', '=', 'product_subspecification.product_id')
->get();
// dd($subs);
// using this to get result of 2 queries above at once
$prod = DB::table('products')
->whereIn('products.category_id', $id)
->groupby($subs)
->get();
return view('front.landing', compact('landing', 'prod'));
}
查询：$cat＆amp; $subs按预期工作，并返回我正在寻找的结果。
我的问题是如何在
$prod查询中绑定这两个？
到目前为止，我可以cat使用whereIn，但是当您看到$subs和$prod时，我们都会尝试获取DB::table('products')这是products问题我想。
我得到了这个错误：
SQLSTATE [HY093]：参数号无效：混合命名和位置 参数（SQL：select * from
productswherecategory_id。->union($subs)in（3,4）group by `[{＆＃34; id＆＃34;：1，＆＃34; landing_id＆＃34;：8，＆＃34; s //继续......
PS：
如果我使用->groupby($subs)代替dd($id);，我会得到：
方法getBindings不存在。
array:2 [▼
0 => 3
1 => 4
]
dd($subs); Collection {#721 ▼
#items: array:5 [▼
0 => {#710 ▼
+"id": 1
+"landing_id": 8
+"subspecification_id": 1
+"product_id": 1
+"title": "product one"
+"slug": "product-one"
+"imageOne": "product-1517990897.jpg"
+"imageTwo": "product-1517990897.png"
+"short_description": "<p>this is first testing product</p>"
+"description": "<p>this is first testing product this is first testing product this is first testing product this is first testing product this is first testing product this is ▶"
+"price": "10000000"
+"meta_description": null
+"meta_tags": null
+"arrivalDays": "2"
+"height": "100"
+"weight": "1"
+"lenght": "100"
+"width": "100"
+"sku": "1985629"
+"stock": "16"
+"status_id": 1
+"brand_id": 2
+"category_id": 1
+"subcategory_id": 2
+"created_at": "2018-02-07 15:05:00"
+"updated_at": "2018-02-28 14:16:46"
}
1 => {#716 ▶}
2 => {#714 ▶}
3 => {#720 ▶}
4 => {#718 ▶}
]
}
$cat PS：当我将$subs和1放在一起时，它应该将结果减少到===false，这是我保存的y数据的正确答案。
答案 0 :(得分：0)
我将我的$subs和$prod混合在一起，如下所示，它完美地运作：
$prod = DB::table('landing_specifications')->where('landing_id', $landing->id)
->join('product_subspecification', function ($keys) {
$keys->on('product_subspecification.subspecification_id', '=', 'landing_specifications.subspecification_id');
})
->join('products', 'products.id', '=', 'product_subspecification.product_id')
->whereIn('products.category_id', $id)
->groupby('products.id')
->get();