Php laravel 5.4嵌套foreach循环中的重复查询
在我的Laravel5.4项目中,我试图从模型文章和状态之间的关系中获取一些数据。关系类型为OneToMany,其中Article具有一个状态,Status具有多个项目 为了获取想要的数据,我通过一个方法Php laravel 5.4嵌套foreach循环中的重复查询,php,mysql,laravel,foreach,laravel-5.4,Php,Mysql,Laravel,Foreach,Laravel 5.4,在我的Laravel5.4项目中,我试图从模型文章和状态之间的关系中获取一些数据。关系类型为OneToMany,其中Article具有一个状态,Status具有多个项目 为了获取想要的数据,我通过一个方法whereHas()迭代了一组模型文章项,这些项目与模型/关系状态一起加载。第一次迭代构建一个正确的查询,但每次迭代都会附加由方法whereHas()[我猜是这样]生成的查询 如果给定-> 文章范本: class Article extends Model { public functio
whereHas()
迭代了一组模型文章项,这些项目与模型/关系状态一起加载。第一次迭代构建一个正确的查询,但每次迭代都会附加由方法whereHas()
[我猜是这样]生成的查询
如果给定->
文章范本:
class Article extends Model
{
public function status()
{
return $this->belongsTo(ArticleStatus::class,'articleStatus_id');
}
}
状态模型:
class ArticleStatus extends Model
{
public function article()
{
return $this->hasMany(Article::class);
}
}
将变量通过控制器传递到视图:
class RedactionController extends Controller
{
/**
* Display a listing of the resource.
*
* @return \Illuminate\Http\Response
*/
public function index()
{
$articles = Auth::user()->articles();
$statuses = array_values(ArticleStatus::all()->pluck('status')->toArray());
return view('redaction',[
'articles' => $articles,
'statuses' => $statuses,
]);
}
视图的一部分,我希望在其中遍历数据并显示与文章状态相对应的数据:
<div class="tab-content">
@foreach($statuses as $count => $status)
<div class="card-block tab-pane @if($count==0) active @endif" id="{{$status}}">
<table class="table">
<thead>
<tr>
<th>#</th>
<th>Titulok</th>
<th>Vytvorené</th>
<th>Publikované</th>
<th>Upravené</th>
<th class="text-center">Action</th>
</tr>
</thead>
<tbody>
<p class="mt-5"><b>{{$status}}</b></p>
@php
$result = $articles->with('status')->whereHas('status', function ($query) use ($status)
{
$query->where('status','=', $status);
})->toSql();
echo $result;
@endphp
</tbody>
</table>
</div>
@endforeach
</div>
第二次迭代:
select * from `articles` where `articles`.`user_id` = ? and `articles`.`user_id` is not null and exists (select * from `article_statuses` where `articles`.`articleStatus_id` = `article_statuses`.`id` and `status` = ?)
select * from `articles` where `articles`.`user_id` = ? and `articles`.`user_id` is not null and exists (select * from `article_statuses` where `articles`.`articleStatus_id` = `article_statuses`.`id` and `status` = ?) and exists (select * from `article_statuses` where `articles`.`articleStatus_id` = `article_statuses`.`id` and `status` = ?)
select * from `articles` where `articles`.`user_id` = ? and `articles`.`user_id` is not null and exists (select * from `article_statuses` where `articles`.`articleStatus_id` = `article_statuses`.`id` and `status` = ?) and exists (select * from `article_statuses` where `articles`.`articleStatus_id` = `article_statuses`.`id` and `status` = ?) and exists (select * from `article_statuses` where `articles`.`articleStatus_id` = `article_statuses`.`id` and `status` = ?)
第三次迭代:
select * from `articles` where `articles`.`user_id` = ? and `articles`.`user_id` is not null and exists (select * from `article_statuses` where `articles`.`articleStatus_id` = `article_statuses`.`id` and `status` = ?)
select * from `articles` where `articles`.`user_id` = ? and `articles`.`user_id` is not null and exists (select * from `article_statuses` where `articles`.`articleStatus_id` = `article_statuses`.`id` and `status` = ?) and exists (select * from `article_statuses` where `articles`.`articleStatus_id` = `article_statuses`.`id` and `status` = ?)
select * from `articles` where `articles`.`user_id` = ? and `articles`.`user_id` is not null and exists (select * from `article_statuses` where `articles`.`articleStatus_id` = `article_statuses`.`id` and `status` = ?) and exists (select * from `article_statuses` where `articles`.`articleStatus_id` = `article_statuses`.`id` and `status` = ?) and exists (select * from `article_statuses` where `articles`.`articleStatus_id` = `article_statuses`.`id` and `status` = ?)
因此,查询建立每个foreach迭代,并在前一个迭代的末尾追加一些查询。如果你能给我一些建议,我将不胜感激
谢谢您必须从foreach中取出查询并将其放入索引函数中,如
$results = $articles->with('status')->whereHas('status', function ($query) use ($statuses)
{
$query->whereIn('status', $statuses);
})->get();
这将获取所有在$statuses
中具有所有状态的文章,然后您可以为视图创建一个结构,如
$final_results = [];
foreach($results as $article)
{
if( ! isset($final_results[$article->status->status]))
$final_results[$article->status->status] = [];
$final_results[$article->status->status][] = $article;
}
这样,您就有了一个属性status为ArticleStatus的数组,作为其文章的键,将$final_results
变量传递给您的视图
那么在你看来,
<div class="tab-content">
@foreach($final_results as $status => $articles)
<div class="card-block tab-pane @if($count==0) active @endif" id="{{$status}}">
<table class="table">
<thead>
<tr>
<th>#</th>
<th>Titulok</th>
<th>Vytvorené</th>
<th>Publikované</th>
<th>Upravené</th>
<th class="text-center">Action</th>
</tr>
</thead>
<tbody>
<p class="mt-5"><b>{{$status}}</b></p>
@foreach($articles as $article)
// Here your code to show Article properties
@endforeach
</tbody>
</table>
</div>
@endforeach
</div>
@foreach($status=>$articles作为最终结果)
#
提图洛克
Vytvorené
公共图书馆
Upravené
行动
{{$status}
@foreach($articles作为$article)
//下面是显示文章属性的代码
@endforeach
@endforeach
您好,非常感谢您的解决方案,它工作正常。就为了记录,$count变量必须被删除,因为它没有被声明为amd替换,例如$loop->index(laravel的变量)。。