Laravel 5将查询结果添加到数组中的foreach中

Question

I have a problem in my Laravel 5 application. 我的Laravel 5应用程序中有问题。 My controller-method contains a foreach, which should iterate over a previous Eloquent-result-array (it is named $zipcodes). 我的控制器方法包含一个foreach，它应该在以前的Eloquent-result-array（称为$ zipcodes）上进行迭代。 So each zipcode is used to fill a query, which result returns an Article-object (named $article). 因此，每个邮政编码都用于填充查询，结果返回一个Article对象（名为$ article）。 Every end of iteration it should add the Article-result to an array ($articles), which is used at the end of my method to display the Articles on my page. 每次迭代结束时，都应将Article-result添加到一个数组（$ articles）中，该数组在我的方法末尾用于在页面上显示Articles。 Maybe there is a better option for the performing of the Article-query, not every iteration, but I don't know how. 也许有一个更好的选项来执行Article-query，不是每次迭代都可以，但是我不知道怎么做。

UPDATE UPDATE

This is working for my problem, without perform the query in a foreach: Laravel multiple where clauses in query from given array 这适用于我的问题，而无需在foreach中执行查询： Laravel从给定数组中查询中的多个where子句

My code now is 我的代码现在是

// grabs all zipcodes matching the distance
$zipcodes = $this->getZipcodes($zipCoordinateId, $distance);

foreach ($zipcodes AS $key=>$val)
{
    $zipcodes[$key] = (array) $val;
}

$codes = array_column($zipcodes, 'zc_zip');

$articles = Article::whereIn('zipcode', $codes)->get();

return view('pages.intern.articles.index', compact('articles'));

UPDATE END 更新结束

My SearchController: 我的SearchController：

<?php

namespace App\Http\Controllers;

use App\Article;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Session;

class SearchController extends Controller
{
public function getSearch(Request $request)
{
    if(($request->has('zipcode'))) {
        $zipcode = $request->input('zipcode');
        $distance = $request->input('distance');

        $zipCoordinateId = $this->getZipCoordindateId($zipcode);
        $zipcodes = $this->getZipcodes($zipCoordinateId, $distance);

        $articles = array();

        foreach($zipcodes as $value) {
            //$zipcode = $zipcodes[0]->zc_zip; // this is working
            $zipcode = $value->zc_zip;

            $article = Article::where('zipcode', $zipcode)->get();


           // add the $article each iteration to $articles
        }

        return view('pages.articles', compact('articles'));
    } else {
        return redirect('/articles');
    }
}

public function getZipCoordindateId($value) {
    $result = DB::table('zip_coordinates')
            ->where('zc_zip', '=' , $value)
            ->orWhere('zc_location_name', 'LIKE', $value)
            ->pluck('zc_id');
    return $result;
}

public function getZipcodes($id, $distance) {

    $result = DB::select(
        DB::raw("
            SELECT dest.zc_zip,
                ACOS(
                    SIN(RADIANS(src.zc_lat)) * SIN(RADIANS(dest.zc_lat))
                    + COS(RADIANS(src.zc_lat)) * COS(RADIANS(dest.zc_lat))
                    * COS(RADIANS(src.zc_lon) - RADIANS(dest.zc_lon))
                ) * 6380 AS distance
            FROM zip_coordinates AS dest
            CROSS JOIN zip_coordinates AS src
            WHERE src.zc_id = :id
            HAVING distance < :distance
            ORDER BY distance"), array('id' => $id, 'distance' => $distance));

    return $result;
}
}

my view: 我的观点：

@extends('layouts.default')

@section('content')
    <h1>All Articles</h1>
<hr/>

<search>
    {!! Form::open(['url' => 'intern/search']) !!}
        {!! Form::text('zipcode', null, ['class' => 'form-control']) !!}
        {!! Form::select('distance', [
          '5' => '5 km',
          '10' => '10 km',
          '25' => '25 km',
          '50' => '50 km',
          ], null, ['class' => 'form-control']) !!}
        {!! Form::submit('Suchen', ['class' => 'btn btn-success']) !!}
    {!! Form::close() !!}
</search>


@foreach($articles as $article)
    <article>
        <h2>
            <a href="{{ url('/articles', $article->id) }}">{{ $article->name }}</a>
        </h2>

        <div>
            <label>Description:</label>
            <p>{{ $article->description }}</p>
        </div>
        <div>
            <label>ZIPCODE:</label>
            {{ $article->zipcode }}
        </div>
        <div>
            <label>Published:</label>
            {{ $article->published }}
        </div>
        <div>
            <label>Rank:</label>
            {{ $article->rank }}
        </div>
    </article>
    <hr/>
@endforeach
@stop

Hope you can help me, thank you in advance. 希望你能帮助我，在此先谢谢你。 quantatheist quantatheist

EDIT 编辑

When I use 当我使用

foreach($zipcodes as $key => $value)
        {
            $articles[] = Article::where('zipcode', $value->zc_zip)->get();
        }
        print_r($articles);

With another zipcode in the search and updated zipcodes of my articles, it prints (at the moment, there are three articles in my database, the both first have zipcodes, which are in the range of my new zipcode-search): 搜索时会显示另一个邮政编码，并显示我文章的更新邮政编码（目前，我的数据库中有三篇文章，第一篇都包含邮政编码，这在我的新邮政编码搜索范围内）：

EDIT 2 编辑2

I print_r the articles from $articles = Article::all();, which uses the same return view('pages.articles', compact('articles')); 我从$ articles = Article :: all（）;中打印文章，它使用相同的返回视图（'pages.articles'，compact（'articles）））; and displays on the same site: 并显示在同一站点上：

So the output from my print_r($articles) should be something like this. 所以我的print_r（$ articles）的输出应该是这样的。

EDIT 3 编辑3

My current foreach is: 我当前的foreach是：

foreach($zipcodes as $key => $value)
        {
            //$code = $zipcodes[0]->zc_zip; // working, prints out one article
            //$article = Article::where('zipcode', $code)->get();
            $article = Article::where('zipcode', $value->zc_zip)->get();
            //print_r($article);
        }
        print_r($article);

Answer 1

You could try this: 您可以尝试以下方法：

foreach($zipcodes as $key => $value)
{
    $articles[] = Article::where('zipcode', $value->zc_zip)->get();
}
return view('pages.articles', compact('articles'));

View: 视图：

@foreach($articles as $article)
<article>
    <h2>
        <a href="{!! url('/articles', $article->id) !!}">{!! $article->name !!}</a>
    </h2>

    <div>
        <label>Description:</label>
        <p>{!! $article->description !!}</p>
    </div>
    <div>
        <label>ZIPCODE:</label>
        {!! $article->zipcode !!}
    </div>
    <div>
        <label>Published:</label>
        {!! $article->published !!}
    </div>
    <div>
        <label>Rank:</label>
        {!! $article->rank !!}
    </div>
</article>
<hr/>
@endforeach

Answer 2

You have declared $articles = array(); 您已经声明了$ articles = array（）; and then you're passing $article (without the s ) to compact function, that is why you get an undefined variable in your view, also when you are looping in the foreach you must do it like this : 然后将$ article（不带s ）传递给紧凑函数，这就是为什么您在视图中得到一个未定义的变量的原因，同样，当您循环到foreach时，您必须这样做：

@foreach($articles as $article)
....
@endforeach

Laravel 5将查询结果添加到数组中的foreach中

问题描述

2 个解决方案

解决方案1
0 2015-11-03 23:44:40

解决方案2
0 2015-11-04 01:30:47

Laravel 5将查询结果添加到数组中的foreach中

问题描述

2 个解决方案

解决方案1 0 2015-11-03 23:44:40

解决方案2 0 2015-11-04 01:30:47

解决方案1
0 2015-11-03 23:44:40

解决方案2
0 2015-11-04 01:30:47