格式化来自 Laravel 视图中的 JSON 数据

Question

我正在尝试以这种插图格式在我的视图中显示我的数据。方括号中的项目是 table 的 header。

[Lecture]

ECE 201 Section 1   ..   ..

ECE 201 Section 2   ..   ..

ECE 201 Section 3   ..   ..

[Lab]

ECE 201 Section 10   ..   ..

ECE 201 Section 11   ..   ..

ECE 201 Section 12   ..   ..

[Recitation]

ECE 201 Section 20   ..   ..

ECE 201 Section 21   ..   ..

ECE 201 Section 22   ..   ..

我的 JSON，嗯，对于一个 class，看起来像下面的

   {
       year: "2015",
       term: "Summer",
       subject_code: "ECE",
       course_no: "201",
       instr_type: "Lecture",
       instr_method: "Face To Face",
       section: "003",
       crn: "42953",
       course_title: "Digital Logic",
       credits: "3.0",
       day: "R",
       time: "06:30 pm - 09:20 pm",
       instructor: "Teacher Name",
       campus: "University Building",
       max_enroll: "18",
       enroll: "18",
       building: "PLACE",
       room: null,
       description: "Introduction to logic for computing",
       pre_reqs: "",
       co_reqs: ""
   }

本质上，我想把instr_type ONCE显示为table的一个header，并在table中显示相应的数据。您可以假设数据 return 按 instr_type 排序，因此如果您有多个实验室和讲座，它将像这样 returned - 实验室，实验室，实验室，讲座，讲座，等等

我觉得如果我的数据采用这种格式，我想做的事情会更容易实现：

   {
       year: "2015",
       term: "Summer",
       subject_code: "ECE",
       course_no: "201",
       instr_type: "Lecture",
       info: [
       { 
         instr_method: "Face To Face",
         section: "003",
         crn: "42953",
         course_title: "Digital Logic",
         credits: "3.0",
         day: "R",
         time: "06:30 pm - 09:20 pm",
         instructor: "Teacher Name",
         campus: "University Building",
         max_enroll: "18",
         enroll: "18",
         building: "PLACE",
         room: null,
         description: "Introduction to logic for computing",
         pre_reqs: "",
         co_reqs: ""
       }, {
         instr_method: "Face To Face",
         section: "004",
         crn: "42954",
         ..
       }
       ]
   }

我的问题是如何在我的 Controller 或 View 中格式化我的数据，以便实现这种效果？为这个愚蠢的问题道歉；我觉得这个问题的答案很简单，只是我想多了。

Answer 1

我发现使用两个循环最适合这种事情。

// in your Controller
$classesByType = [];
foreach ($classes => $class) {
    $classesByType[$class['instr_type']][] = $class;
}
return view('my-view', ['classesByType' => $classesByType]);

// In your Blade template
@foreach ($classesByType as $type => $classes)
    <h1>{{ $type }}</h1>
    @foreach ($classes as $class)
        <p>{{ $class['subject_code'] }} {{ $class['course_code'] }} ...</p>
    @endforeach
@endforeach

如果要按其他元素分类，只需添加另一个 loop/array 级别：

// in your Controller
$classesByLabelAndType = [];
foreach ($classes => $class) {
    $label = $class['subject_code'] . " " . $class['course_no'];
    $classesByLabelAndType[$label][$class['instr_type']][] = $class;
}
return view('my-view', ['classesByLabelAndType' => $classesByLabelAndType]);

// In your Blade template
@foreach ($classesByLabelAndType as $label => $classesByType)
    <h1>{{ $label }}</h1>
    @foreach ($classesByType as $type => $classes)
        <h2>{{ $type }}</h2>
        @foreach ($classes as $class)
            <p>{{ $class['course_code'] }} ...</p>
        @endforeach
    @endforeach
@endforeach

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