Foreach課程部分和課程-有解無憂

我正在嘗試計算當前的課程部分，然后計算該部分的課程和耐用性。這是我的 foreach

<div class="card-content-box">
            @foreach($courses as $c)
            <p class="card-content-box__quantity">
            @foreach($c->sections as $s)
                <span class="card-content-box__quantity-time">
                    {{ $s->count('id') }} section
                </span>
                @endforeach
                @foreach($s->lessons as $l)
                <span class="card-content-box__quantity-time">
                    {{ $l->count('id') }} lesson
                </span>
                <span class="card-content-box__quantity-lecture">
                    {{ $l->count('durability') }} lesson durability
                </span>
                @endforeach
            </p>
            @endforeach
        </div>

它非常有線。我認為這是我的 foreach 錯誤

30節30節30節30節30節30節30節30節30節15節課15節課持久性15節15節課持久性15節15節課持久性15節15節課持久性15節課15節課持久性

15節課15節課耐久度15節課15節課耐久度15節課15節課耐久度15節課耐久度15節課耐久度15節課耐久度15節課耐久度

uj5u.com熱心網友回復：

如果您想要每門課程的總數

你需要這些關系到位：

Lesson -> section() (belongsTo)
Section -> course() (belongsTo)

<div class="card-content-box">
    @foreach($courses as $course)
        <p class="card-content-box__quantity">
            <span class="card-content-box__quantity-time">
                {{ $course->sections()->count() }} section
            </span>
            <span class="card-content-box__quantity-time">
                {{ Lesson::whereHas('section.course', function($cq) use ($course) {$cq->where('id', $course->id);})->count() }} lesson
            </span>
            <span class="card-content-box__quantity-lecture">
                {{ Lesson::whereHas('section.course', function($cq) use ($course) {$cq->where('id', $course->id);})->sum('durability') }} lesson durability
            </span>

        </p>
    @endforeach
</div>

除了課程一之外，不需要回圈。

uj5u.com熱心網友回復：

<div class="card-content-box">
    @foreach($courses as $c)
        <p class="card-content-box__quantity">
            @foreach($c->sections as $s)
                <span class="card-content-box__quantity-time">
                    {{ $s->count('id') }} section
                </span>
                @foreach($s->lessons as $l)
                    <span class="card-content-box__quantity-time">
                    {{ $l->count('id') }} lesson
                </span>
                    <span class="card-content-box__quantity-lecture">
                    {{ $l->count('durability') }} lesson durability
                </span>
                @endforeach
            @endforeach
        </p>
    @endforeach
</div>

這個應該有效。在你的代碼中，你$s->lessons as $l在節的回圈之外使用。所以，$s實際上是在處理最后一個物件。

轉載請註明出處，本文鏈接：https://www.uj5u.com/gongcheng/392930.html

標籤：php 拉拉维尔

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