Laravels的DD助手功能是否正常工作？

Question

我喜欢使用该dd函数进行调试.这次当我用它来显示约会列表时,我看不到(没有可点击的箭头)属性和原始数据.我得到[ …19]显示的括号,不知道为什么.

Collection {#3061 ?
  #items: array:548 [?
    0 => Appointment {#821 ?
      #table: "appointments"
      #fillable: array:16 [ …16]
      #connection: null
      #primaryKey: "id"
      #perPage: 15
      +incrementing: true
      +timestamps: true
      #attributes: array:19 [ …19]
      #original: array:19 [ …19]
      #relations: array:2 [ …2]
      #hidden: []
      #visible: []
      #appends: []
      #guarded: array:1 [ …1]
      #dates: []
      #dateFormat: null
      #casts: []
      #touches: []
      #observables: []
      #with: []
      #morphClass: null
      +exists: true
      +wasRecentlyCreated: false
    }
    1 => Appointment {#822 ?}
    2 => Appointment {#823 ?}
    3 => Appointment {#824 ?}
    4 => Appointment {#825 ?}
    5 => Appointment {#826 ?}
    6 => Appointment {#827 ?}
    7 => Appointment {#828 ?}

在后面的列表中,我甚至看不到内部约会(没有箭头):

    81 => Appointment {#902 ?}
    82 => Appointment {#903 ?}
    83 => Appointment {#904 ?}
    84 => Appointment {#905 ?}
    85 => Appointment {#906 …23}
    86 => Appointment {#907 …23}
    87 => Appointment {#908 …23}
    88 => Appointment {#909 …23}
    89 => Appointment {#910 …23}
    90 => Appointment {#911 …23}

但是当我使用var_dump时,我的数据看起来很好:

    array(548) {
      [0]=>
      array(21) {
        ["id"]=>
        int(149)
        ["appointmenttype_id"]=>
        NULL
        ["appointmentlocationtype_id"]=>
        NULL
        ["appointment_start"]=>
        object(Carbon\Carbon)#812 (3) {
          ["date"]=>
          string(26) "2015-12-21 07:00:00.000000"
          ["timezone_type"]=>
          int(3)
          ["timezone"]=>
          string(16) "America/New_York"
        }
        ["appointment_end"]=>
        object(Carbon\Carbon)#811 (3) {
          ["date"]=>
          string(26) "2015-12-21 09:00:00.000000"
          ["timezone_type"]=>
          int(3)
          ["timezone"]=>
          string(16) "America/New_York"
        }

其他人经历过这种情况？

Answer 1

这是一个不太知名的警告,它返回了太大的结果列表.通常,dd()它是对您要返回的数据的快速概述,并处理较小的数据组"向下钻取".一旦你达到一定数量(我忘了确切的一个,500可能？),该功能不再有效.

如果您在某个地方的代码中使用它之前绝对需要查看此数据,limit()请get()在结果之前使用一个子句,或者使用dd($example[0])查看单个结果的详细信息.希望有所帮助!