Php 使用数组值检索数据-laravel

我的任务是显示选定组的所有联系人。当我选择facebook和instagram等两个Gorup时，我必须显示属于这两个组的所有联系人

当我选择下面这样的多个组并执行

返回$explode\u groups

时，我将获得两个组的id，如

1,2

但我的问题是，当我将联系人显示为

return$selected\u contacts

时，我只会获得组1的联系人

为什么会这样

集团

 public function customers()
    {
        return $this->belongsToMany('App\Customer','customer_group','group_id','customer_id')
        ->withTimestamps();
    }

客户

 public function groups()
    {
        return $this->belongsToMany('App\Group','customer_group','customer_id','group_id')
        ->withTimestamps();
    }

$get_selected_groups = $request->get('group');

$explode_groups = implode(', ', $get_selected_groups);

$selected_groups = Group::where('id',$explode_groups)->first();

$selected_contacts = $selected_groups->customers()->get();

控制器

 public function groups()
    {
        return $this->belongsToMany('App\Group','customer_group','customer_id','group_id')
        ->withTimestamps();
    }

$get_selected_groups = $request->get('group');

$explode_groups = implode(', ', $get_selected_groups);

$selected_groups = Group::where('id',$explode_groups)->first();

$selected_contacts = $selected_groups->customers()->get();

响应

{"id":2,"title":"test","no_of_contacts":0,"user_id":1,"created_at":"2018-04-15 23:55:30","updated_at":"2018-04-15 23:55:30","customers":[{"id":1,"name":"Benson Jones Thomson","phone":"0247878234","group_id":null,"user_id":1,"created_at":"2018-04-16 00:14:20","updated_at":"2018-04-16 05:31:05","pivot":{"group_id":2,"customer_id":1,"created_at":"2018-04-16 05:33:08","updated_at":"2018-04-16 05:33:08"}},{"id":2,"name":"Lawrence Pitcher","phone":"0244371112","group_id":null,"user_id":1,"created_at":"2018-04-16 07:59:15","updated_at":"2018-04-16 07:59:15","pivot":{"group_id":2,"customer_id":2,"created_at":"2018-04-16 07:59:15","updated_at":"2018-04-16 07:59:15"}}]}

---

您应该使用

where（）

从给定数组中选择多个ID，并使用

with（）

方法加载每个模型的关系

比如：

试试这个

$selected_contacts = Customer::whereHas('groups', function($q) use ($explode_groups){
            $q->whereIn('id', $explode_groups);
})->get();

你应该试试这个

$selected_groups = Group::whereIn('id',$get_selected_groups)->get();

$selected_contacts = array();

foreach($selected_groups as $selected_group){

   $selected_contacts[] = $selected_group->customers()->get();

}

---

Group:：其中（'id'，$request->get（'Group'）

，你应该停止做你正在做的事情，拿起一本书或看一些关于编程的系列，特别是SQL。向我们展示你的客户和组模型及其关系function@Kyslik，请在评论之前阅读问题。因为我试过你的基本功answer@Sohel0415，model updated Now显示传递给Lightning\Database\Grammar:：parameterize（）的$get\u selected\u groupsArgument 1的转储必须是数组类型，字符串给定，请检查问题中的响应。。我正试图得到客户的财产