Question

我有一个高尔夫应用程序。我在数据库中保持分数。我为特定用户提供了所有轮次，并返回了一个集合（数组：14）。每个项目包含190个项目（数组：190）。 190项是特定一轮高尔夫的得分数据。像每个洞的得分，每个洞的每个驱动器的距离等等。

我要做的是获得平均驾驶距离（所有带有驾驶距离数据的记录总计除以机会数。

诀窍是我想将这些分组分为5,5和4组。所以我想要最后4轮，前5轮以及前5轮的平均驾驶距离等。

我会将它们绘制在图表上。

我遇到的问题是在我对初始集合进行分块后访问（array：190）中的项目：

$rounds = Rounds::roundsAll($user, 14); //grabs me 14 rounds for a user.
$chunks = $rounds->chunk(5); // gives me 3 collections of 4-5-5

我知道我需要一个嵌套循环，如：

foreach ($chunks as $key => $chunk) {
foreach ($chunks as $key => $round) {

如果我没有分块，我可以访问收集项目，如：

$round->$holedrivedistance

或

$round->scorecard->$holepar // I have defined these relationship 'scorecard'

如何使用chunked集合执行此操作，以便我可以迭代每个组添加我需要添加的项目。然后为下一个块做同样的事情。

RoundsAll返回一个集合：

Collection {#277 ▼
  #items: array:14 [▼
    0 => Score {#281 ▼
      #fillable: array:187 [▶]
      #dates: array:1 [▶]
      #connection: null
      #table: null
      #primaryKey: "id"
      #keyType: "int"
      +incrementing: true
      #with: []
      #perPage: 15
      +exists: true
      +wasRecentlyCreated: false
      #attributes: array:190 [▶]
      #original: array:190 [▼
        "id" => 15
        "created_at" => "2017-03-13 15:31:04"
        "updated_at" => "2017-03-13 15:31:04"
        "user_id" => 1
        "scorecard_id" => 42713
        "course_id" => 10555
        "club_id" => 9168
        "total_score" => 79
        "round_date" => "2017-03-09"
        "round_type" => 18
       ...
        "hole1_drive_distance" => 231
        "hole2_drive_distance" => 261
        "hole3_drive_distance" => 0
        "hole4_drive_distance" => 351
        "hole5_drive_distance" => 295
        "hole6_drive_distance" => 305
        "hole7_drive_distance" => 304
        "hole8_drive_distance" => 198
        "hole9_drive_distance" => 0
        "hole10_drive_distance" => 267
        "hole11_drive_distance" => 289
        "hole12_drive_distance" => 0
        "hole13_drive_distance" => 331
        "hole14_drive_distance" => 261
        "hole15_drive_distance" => 0
        "hole16_drive_distance" => 234
        "hole17_drive_distance" => 248
        "hole18_drive_distance" => 0
       ..
      ]
      #casts: []
      #dateFormat: null
      #appends: []
      #events: []
      #observables: []
      #relations: array:1 [▶]
      #touches: []
      +timestamps: true
      #hidden: []
      #visible: []
      #guarded: array:1 [▶]
    }
    1 => Score {#282 ▶}
    2 => Score {#283 ▶}
    3 => Score {#284 ▶}
    4 => Score {#285 ▶}
    5 => Score {#286 ▶}
    6 => Score {#287 ▶}
    7 => Score {#288 ▶}
    8 => Score {#289 ▶}
    9 => Score {#290 ▶}
    10 => Score {#291 ▶}
    11 => Score {#292 ▶}
    12 => Score {#293 ▶}
    13 => Score {#294 ▶}
  ]
}

Chunk返回按5-5-4

分组的相同集合

我需要遍历“hole＃_drive_distance”=＆gt;总计261项，然后用数字除以得到平均值。我成功地为所有轮次做了这个。问题是我不知道怎么做所以我回来了：

Chunk 1 = "AVG DRIVE"
Chunk 2 = "AVG DRIVE"
Chunk 3 = "AVG DRIVE"

laravel收藏和分块

0 个答案: