Question

如果我使用{{$node[0]->url}}，那么Laravel的模板引擎会显示正确的结果，但是我无法弄清楚如何在@foreach循环中使用@for $ i = 0来显示所有内容这就是我在路线中的内容文件

$oReturn = new stdClass();
        $fid='endpoints';//sample fid

        $url = 'http://localhost:5493/sdata/$system/registry/'.$fid;

        $xml = simplexml_load_file($url);
        foreach($xml->xpath("//sdata:payload") as $entry) {
            // xpath here must be from payload to endPoint--type
            $content = $entry->xpath("./sdata:endPoint--type");

            foreach($content as $c) {
                // Make set of children with prefix sdata
                $nodes = $c->children('sdata', true);

            }

// add parsed data to the array
            $oReturn->entry[] = $nodes;

        }
        return View::make('index', compact('oReturn'));

这就是我在我的视图文件中尝试的内容

@for($i=0; $i < 4; $i++)
@endfor
@foreach ($oReturn as $node)
   <li>{{$node[$i]->url}}</li>
@endforeach

抱歉，这是完整的print_r结果

Array ( [oReturn] => stdClass Object 
( [entry] => Array 
    ( 
        [0] => SimpleXMLElement Object ( [description] => Sage 50 Accounts [protocol] => http [host] => base_3 [applicationName] => accounts50 [contractName] => SimpleXMLElement Object ( ) [dataSetName] => - [url] => http://base_3:5493/sdata/accounts50 [isBrowsable] => true [aliveStamp] => 2015-11-06T23:31:10.031+00:00 ) 
        [1] => SimpleXMLElement Object ( [endPointType] => dataSet [applicationName] => accounts50 [contractName] => GCRM [dataSetName] => Enter Your Company Name [url] => http://base_3:5493/sdata/accounts50/GCRM/{C22ACA13-3C4C-4E33-A584-CD99BD3002A6} ) 
        [2] => SimpleXMLElement Object ( [endPointType] => dataSet [applicationName] => accounts50 [contractName] => GCRM [dataSetName] => Enter Your Company Name [url] => http://base_3:5493/sdata/accounts50/GCRM/{FF476636-D4AF-4191-BDE4-891EDA349A68} ) 
        [3] => SimpleXMLElement Object ( [endPointType] => dataSet [applicationName] => accounts50 [contractName] => GCRM [dataSetName] => Enter Your Company Name [url] => http://base_3:5493/sdata/accounts50/GCRM/{C62A13D5-3FFE-43B4-9DAF-38F9055A83C7} ) 
        [4] => SimpleXMLElement Object ( [description] => GCRM Contract [endPointType] => contract [protocol] => http [host] => base_3 [applicationName] => accounts50 [contractName] => GCRM [dataSetName] => - [url] => http://base_3:5493/sdata/accounts50/GCRM [aliveStamp] => 2015-11-06T23:31:11.062+00:00 ) 
    ) 
) 
) 1

Answer 1

简单的答案是，Blade中的foreach与常规PHP foreach的工作方式相同。您应该可以执行以下操作：

@foreach ($nodes as $node)
    <li>{{ $node->url }}</li>
@endforeach

如果您需要访问每个节点的数组键值：

@foreach ($nodes as $key => $node)
    <li>{{ $key }}: {{ $node->url }}</li>
@endforeach

但是，我认为问题可能不在于您的Blade语法，而在于您创建输入变量的方式。鉴于您在上面的代码中创建$oReturn的方式，它将没有您看起来期望的属性。为了说明，这里是您正在创建的内容的简化版本：

// initialize your return variable 
$oReturn = new stdClass();

// create a dummy array <sdata:x> nodes,
// to simulate $nodes = $c->children('sdata', true);
$node = new SimpleXMLElement('<sdata:x/>');
$nodes = [ $node, $node, $node ];

// simulate adding nodes to the array of entries 
$oReturn->entry[] = [ $node, $node, $node ];

// print out the resulting structure
print_r( compact( 'oReturn' ) );

将返回：

Array(
    [oReturn] => stdClass Object
        (
            [entry] => Array
                (
                    [0] => Array
                        (
                            [0] => SimpleXMLElement Object()
                            [1] => SimpleXMLElement Object()
                            [2] => SimpleXMLElement Object()
                        )
                )
        )
)

因此，当您执行@foreach ($oReturn as $node)时，$node的值将是entry[]数组，该数组具有单个元素，即节点数组。从您的输入中不清楚这些节点甚至有url个元素。如果您确实想要遍历节点，则必须执行以下操作：

@foreach ($oReturn->entry[0] as $node)
    <li>{{ $node->url }}</li>
@endforeach

这有意义吗？我认为您需要重新考虑$oReturn的创建。

更新

根据以下反馈和上述print_r声明的输出，以下内容应该有效：

@foreach ($oReturn->entry as $node)
    <li>{{ (string) $node->url }}</li>
@endforeach

(string)将$node->url的结果转换为字符串。否则PHP可能会将其视为某种对象。 SimpleXMLElement可能很奇怪。

尝试使用刀片获取foreach循环中的键

1 个答案:

更新