刀片视图中的Laravel查询

Question

您如何在blade.php翻译此查询

$developer_contractor_association = DeveloperContractorAssociation::whereHas('defect_types', function ($query) use($id) {
            $query->where('developer_contractor_associations.id', $id);
        })->orwhereHas('contractor', function ($query) use($id) {
            $query->where('developer_contractor_associations.id', $id);
        })->first();
    return view('dev-admin.contractors.associations.edit', ['developer_contractor_association' => $developer_contractor_association]);

我尝试使用上面的方法，但是当涉及到刀片时，它不起作用

@foreach($developer_contractor_association as $dca_details)
    <h2> {{ $dca_details->user->name }} </h2>
    <p><i class="fas fa-map-marker-alt"></i>{{ $dca_details->contractor->address }}</p>
    <p><i class="fas fa-envelope"></i>{{ $dca_details->user->email }}</p>
    <p><i class="fas fa-phone"></i></i>{{ $dca_details->contractor->contact_no }}</p>
@endforeach

它说：

试图获取非对象的属性“名称”

更新：

我在查询时犯了一些错误，我不需要foreach ，这可以修复我的代码。 谢谢大家的帮助

<div id="contractor-details" class="col-sm-12 col-md-12">
    <h2> {{ $developer_contractor_association->contractor->user->name }} </h2>
    <p><i class="fas fa-map-marker-alt"></i>{{ $developer_contractor_association->contractor->address }}</p>
    <p><i class="fas fa-envelope"></i>{{ $developer_contractor_association->contractor->user->email }}</p>
    <p><i class="fas fa-phone"></i></i>{{ $developer_contractor_association->contractor->contact_no }}</p>
</div>

Answer 1

您应该使用get()而不是first() ，然后在foreach()中使用dd($dca_details)变量来查看$ dca_details是否有用户，如果使用了dd($dca_details->user->name)

处理此错误的最佳方法是使用：

{{$ dca_details-> user-> name？ '-'}}

Answer 2

那是因为一个developer_contractor_association没有用户。 你一定要用

@foreach($developer_contractor_association as $dca_details)
    <h2> {{ $dca_details->user->name ?? 'User absent' }} </h2>
    <p><i class="fas fa-map-marker-alt"></i>{{ $dca_details->contractor->address ?? ''}}</p>
    <p><i class="fas fa-envelope"></i>{{ $dca_details->user->email ?? ''}}</p>
    <p><i class="fas fa-phone"></i>{{ $dca_details->contractor->contact_no ?? ''}}</p>
@endforeach

或者你可以使用

@foreach($developer_contractor_association as $dca_details)
    @if(empty($dca_details->user) || empty($dca_details->contractor))
        @continue
    @endif
    <h2> {{ $dca_details->user->name }} </h2>
    <p><i class="fas fa-map-marker-alt"></i>{{ $dca_details->contractor->address }}</p>
    <p><i class="fas fa-envelope"></i>{{ $dca_details->user->email }}</p>
    <p><i class="fas fa-phone"></i>{{ $dca_details->contractor->contact_no }}</p>
@endforeach

或在控制器中使用

$developer_contractor_association = DeveloperContractorAssociation::whereHas('defect_types', function ($query) use($id) {
        $query->where('developer_contractor_associations.id', $id);
    })->orwhereHas('contractor', function ($query) use($id) {
        $query->where('developer_contractor_associations.id', $id);
    })->has('user')
   ->has('contractor')
   ->get();
return view('dev-admin.contractors.associations.edit', ['developer_contractor_association' => $developer_contractor_association]);