从 Laravel 中的 View 格式化 JSON 数据

Posted 2023-02-26

【中文标题】从 Laravel 中的 View 格式化 JSON 数据

【英文标题】：Formatting JSON data from View in Laravel

【发布时间】：2015-07-25 19:36:09

【问题描述】：

我正在尝试以这种类型的插图格式在我的视图中显示我的数据。方括号内的项目是表格的标题。

[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，好吧，对于一个类，如下所示

   
       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，我想将instr_typeONCE 显示为表的表头，并在表中显示相应的数据。您可以假设数据返回按instr_type 排序，因此如果您有多个实验室和讲座，它将像这样返回 - 实验室、实验室、实验室、讲座、讲座等

如果我的数据采用这种格式，我觉得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控制器或视图中格式化我的数据，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。

【参考方案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

如果您想按其他元素进行分类，只需添加另一个循环/数组级别：

// 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

【讨论】：

正是我想要的。谢谢=)。

很高兴为您提供帮助！并非我们所有人都有超过一千个声誉，所以绿色复选标记将不胜感激！ :)

我会在两分钟内接受！ *** 限制 =)

啊，没有意识到——我是新手。谢谢！

嘿@Ben。我将如何计算$classesByType 数组的总类数？我试过count($classesByType)，但显然，它只返回instr_type的数量