分页前 Laravel 雄辩的采摘数据

Posted 2023-03-14

【中文标题】分页前 Laravel 雄辩的采摘数据

【英文标题】：Laravel eloquent pluck data before pagination

【发布时间】：2020-11-25 15:28:21

【问题描述】：

这里是分页查询：

User::where('username', 'test')
      ->with('followers.follower_details')
      ->paginate(25)

但我想要在分页之前提取数据，如下所示：

User::where('username', 'test')
          ->with('followers.follower_details')
          ->pluck('followers')
          ->paginate(25) 

通过谷歌搜索找不到任何有用的东西，有什么技巧可以处理这些类型的查询吗？

更新 我尝试了 KurtFriars 的工作方式，但数据的问题是

Follower::where('following',
        User::query()->where('username', request()->username)
            ->firstOrFail()->id)->with('follower_details')->paginate(25)

回复是：

        "current_page": 1,
        "data": [
            
                "id": 1,
                "user_id": 1,
                "following": 2,
                "created_at": null,
                "updated_at": null,
                "follower_details": 
                    "name": "test test2",
                    "username": "test",
                    "email": "[e-mail]"
                
            ,
            
                "id": 5,
                "user_id": 3,
                "following": 2,
                "created_at": null,
                "updated_at": null,
                "follower_details": 
                    "name": "test2",
                    "username": "test2",
                    "email": "[e-mail]",
                
            
        ],
        .... // paginations links 
    

但我只需要follower_details，像这样：

        "current_page": 1,
        "data": [
            

                    "name": "test test2",
                    "username": "test",
                    "email": "[e-mail]"
                
            ,
            
                    "name": "test2",
                    "username": "test2",
                    "email": "[e-mail]",
                
            
        ],
        "first_page_url": "http://localhost/api/user/nod/followers?page=1",
        "from": 1,
        "last_page": 1,
        "last_page_url": "http://localhost/api/user/nod/followers?page=1",
        "next_page_url": null,
        "path": "http://localhost/api/user/nod/followers",
        "per_page": 5,
        "prev_page_url": null,
        "to": 2,
        "total": 2
    

【问题讨论】：

为什么要在分页前采摘？还有一件事，如果您不需要follower_details，那您为什么要急切地加载它？

@BasheerKharoti 因为我不需要属于 followers 、 followers.follower_details 的数据，并且为了简单起见

所以你只需要follower_details数据？

@BasheerKharoti 是的

【参考方案1】：

把它分解成这样怎么样

// this will pluck this user followers ids to array
$user_followers = User::where('username', 'username')->first()->followers()->pluck('id')->toArray(); 

// this will get follower details from user follower's array of ids
$follower_details = FollowerDetails::whereIn('following', $user_followers)->paginate(10);