Laravel 5.6 如何通过 id 获取数据并打印 10 by 10

问题描述 投票：0回答：1

我打印了 50 个问题，是的，它也有效。但需求改变了如何按 topic_id 提问并在 5 页中按 10 x 10 打印它们。好消息。我拿了 topic_id 和问题。但我如何从控制器中的数据库中获取数据。

我的数据库栏=问题

| id | topic_id |question_text|
| ---|:--------:|:-----------:|
| 1  |     5    | question1   |
| 2  |     6    | question2   |
| 3  |     7    | question3   |

topic_id => 请求问题编号

array:9 [▼
"_token" => "N6AJGDf95iQ5WOae3WKibS3yiEdzXJmW7RPXu6sE"
1 => "5"
2 => "3"
3 => "5"
4 => "1"
5 => "3"
6 => "6"
7 => "7"
8 => "8"
]

这是我的旧控制器

$questions = $request->input('questions');
$inquiries = $request->input('inquiries');
$queries = $request->input('queries');
$examinations = $request->input('examinations');
$inquisitions = $request->input('inquisitions');

$except = [];

$questions = Question::inRandomOrder()->limit(10)->get();
$except = array_merge($except, $questions->pluck('id')->toArray());
$inquiries = Question::inRandomOrder()->whereNotIn('id', $except)->limit(10)->get(); 
$except = array_merge($except, $inquiries->pluck('id')->toArray())
$queries = Question::inRandomOrder()->whereNotIn('id', $except)->limit(10)->get();
$except = array_merge($except, $queries->pluck('id')->toArray());
$examinations = Question::inRandomOrder()->whereNotIn('id', $except)->limit(10)->get();
$except = array_merge($except, $examinations->pluck('id')->toArray());
$inquisitions = Question::inRandomOrder()->whereNotIn('id', $except)->limit(10)->get();

foreach ($questions as &$question) {
  $question->options = QuestionsOption::where('question_id', $question->id)->inRandomOrder()->get();
}
return view('exams.create', compact('questions','inquiries','queries','examinations','inquisitions'));

create.blade.php

<form method="post" name="myform" action="{{ route('exams.store') }}">
{{ csrf_field() }}

<div id="account_details">
<div class="panel panel-default">
    <div class="panel-heading">
        Нэгдүгээр хэсэг
    </div>
    <?php //dd($questions) ?>
@if(count($questions) > 0)
    <div class="panel-body">
    <?php $i = 1; ?>
    @foreach($questions as $question)
        @if ($i > 1) <hr /> @endif
        <div class="row">
            <div class="col-xs-12 form-group">
                <div class="form-group">
                    <strong>Асуулт {{ $question->id }}.<br/><br/>{!! nl2br($question->question_text) !!}</strong><br/>

                    <input
                        type="hidden"
                        name="questions[{{ $question->id }}]"
                        value="{{ $question->id }}">
                @foreach($question->options as $option)
                    <br>
                    <label class="radio-inline">
                        <input
                            type="radio"
                            name="answers[{{ $question->id }}]"
                            value="{{ $option->id }}">
                        {{ $option->option }}
                    </label>
                @endforeach
                </div>
            </div>
        </div>
    <?php $i++; ?>
    @endforeach
    </div>
@endif
</div><input type="button" value="Дараагын хуудас" onclick="show_next('account_details','user_details','bar1');">
</div>

<div id="user_details">
<div class="panel panel-default">
    <div class="panel-heading">
        Хоёрдугаар хэсэг
    </div>
    <?php //dd($questions) ?>
    @if(count($inquiries) > 0)
    <div class="panel-body">
    <?php $i = 1; ?>
    @foreach($inquiries as $question)
        @if ($i > 1) <hr /> @endif
        <div class="row">
            <div class="col-xs-12 form-group">
                <div class="form-group">
                    <strong>Асуулт {{ $question->id }}.<br/><br/>{!! nl2br($question->question_text) !!}</strong><br/>

                    <input
                        type="hidden"
                        name="questions[{{ $question->id }}]"
                        value="{{ $question->id }}">
                @foreach($question->options as $option)
                    <br>
                    <label class="radio-inline">
                        <input
                            type="radio"
                            name="answers[{{ $question->id }}]"
                            value="{{ $option->id }}">
                        {{ $option->option }}
                    </label>
                @endforeach
                </div>
            </div>
        </div>
    <?php $i++; ?>
    @endforeach
    </div>
@endif
</div>
<input type="button" value="Өмнөх хуудас" onclick="show_prev('account_details','bar1');">
<input type="button" value="Дараагын хуудас" onclick="show_next('user_details','qualification','bar2');">
</div>

<div id="qualification">
<div class="panel panel-default">
    <div class="panel-heading">
        Гуравдугаар хэсэг
    </div>
    <?php //dd($questions) ?>
    @if(count($queries) > 0)
    <div class="panel-body">
    <?php $i = 1; ?>
    @foreach($queries as $question)
        @if ($i > 1) <hr /> @endif
        <div class="row">
            <div class="col-xs-12 form-group">
                <div class="form-group">
                    <strong>Асуулт {{ $question->id }}.<br/><br/>{!! nl2br($question->question_text) !!}</strong><br/>

                    <input
                        type="hidden"
                        name="questions[{{ $question->id }}]"
                        value="{{ $question->id }}">
                @foreach($question->options as $option)
                    <br>
                    <label class="radio-inline">
                        <input
                            type="radio"
                            name="answers[{{ $question->id }}]"
                            value="{{ $option->id }}">
                        {{ $option->option }}
                    </label>
                @endforeach
                </div>
            </div>
        </div>
    <?php $i++; ?>
    @endforeach
    </div>
@endif
</div>
    <input type="button" value="Өмнөх хуудас" onclick="show_prev('user_details','bar1');">
    <input type="button" value="Дараагын хуудас" onclick="show_next('qualification','exort','bar2');">
</div>

<div id="exort">
<div class="panel panel-default">
    <div class="panel-heading">
        Дөрөвдүгээр хэсэг
    </div>
    <?php //dd($questions) ?>
    @if(count($examinations) > 0)
    <div class="panel-body">
    <?php $i = 1; ?>
    @foreach($examinations as $question)
        @if ($i > 1) <hr /> @endif
        <div class="row">
            <div class="col-xs-12 form-group">
                <div class="form-group">
                    <strong>Асуулт {{ $question->id }}.<br/><br/>{!! nl2br($question->question_text) !!}</strong><br/>

                    <input
                        type="hidden"
                        name="questions[{{ $question->id }}]"
                        value="{{ $question->id }}">
                @foreach($question->options as $option)
                    <br>
                    <label class="radio-inline">
                        <input
                            type="radio"
                            name="answers[{{ $question->id }}]"
                            value="{{ $option->id }}">
                        {{ $option->option }}
                    </label>
                @endforeach
                </div>
            </div>
        </div>
    <?php $i++; ?>
    @endforeach
    </div>
@endif
</div>

<input type="button" value="Өмнөх хуудас" onclick="show_prev('qualification','bar1');">
<input type="button" value="Дараагын хуудас" onclick="show_next('exort','wex','bar2');">

</div>

<div id="wex">
<div class="panel panel-default">
    <div class="panel-heading">
        Тавдугаар хэсэг
    </div>
    <?php //dd($questions) ?>
    @if(count($inquisitions) > 0)
    <div class="panel-body">
    <?php $i = 1; ?>
    @foreach($inquisitions as $question)
        @if ($i > 1) <hr /> @endif
        <div class="row">
            <div class="col-xs-12 form-group">
                <div class="form-group">
                    <strong>Асуулт {{ $question->id }}.<br/><br/>{!! nl2br($question->question_text) !!}</strong><br/>

                    <input
                        type="hidden"
                        name="questions[{{ $question->id }}]"
                        value="{{ $question->id }}">
                @foreach($question->options as $option)
                    <br>
                    <label class="radio-inline">
                        <input
                            type="radio"
                            name="answers[{{ $question->id }}]"
                            value="{{ $option->id }}">
                        {{ $option->option }}
                    </label>
                @endforeach
                </div>
            </div>
        </div>
    <?php $i++; ?>
    @endforeach
    </div>
@endif
</div>

<input type="hidden" name="torol" value="1">

<div class="form-group">
<input type="button" value="Өмнөх хуудас" onclick="show_prev('exort','bar1');">
<button type="submit">Дуусгах</button>
</div>

</div>

</form>

ExamsController@create

就是这样。因为我需要接受问题数组的输入请求。

@foreach($questions as $question)
        @if ($i > 1) <hr /> @endif
        <div class="row">
            <div class="col-xs-12 form-group">
                <div class="form-group">
                    <strong>Асуулт {{ $question->id }}.<br/><br/>{!! nl2br($question->question_text) !!}</strong><br/>

                    <input
                        type="hidden"
                        name="questions[{{ $question->id }}]"
                        value="{{ $question->id }}">
                @foreach($question->options as $option)
                    <br>
                    <label class="radio-inline">
                        <input
                            type="radio"
                            name="answers[{{ $question->id }}]"
                            value="{{ $option->id }}">
                        {{ $option->option }}
                    </label>
                @endforeach
                </div>
            </div>
        </div>
    <?php $i++; ?>
    @endforeach
php mysql laravel
1个回答
2
投票

我会这样做：

$questions = Question::with(['options' => function($query) {
     $query->inRandomOrder();
}])->inRandomOrder()->paginate(10);
return view('exams.create', compact('questions'));

请记住，这个解决方案理所当然地认为 

hasMany
和 
question
之间有一个雄辩的 
questionOption
关系，称为 
options
。

如果您需要有关如何在视图中处理分页的更多信息，请查看官方文档。

编辑

如果您只需要将问题分成五组，您可以这样做：

$questions = Question::with(['options' => function($query) {
     $query->inRandomOrder();
}])->inRandomOrder()->limit(50)->get()->slice(5);
return view('exams.create', compact('questions'));

要在视图中显示结果，您可以执行以下操作：

@foreach($questions as $group) 
    @foreach ($group as $question) 
        {{$question}} 
        @foreach($question->options as $option) 
            {{$option}}
        @endforeach
    @endforeach
@endforeach

希望这对您有帮助。

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