Question

我试图在foreach循环中迭代一个json对象，但没有成功，它一直给我关于html实体的错误。

我试图在我的foreach中输出的数据如上：

数据：存储上述数据的变量是'$ product-＆gt;标签['data']'

{"tags":[{"type":"circle","points":[[1.0449999570846558,0.5450000166893005],[0.9850000143051147,0.4399999976158142]],"popup":{"title":"my title","description":"my description"}},{"type":"rectangle","points":[[0.03500000014901161,0.125],[0.3400000035762787,0.6000000238418579]],"popup":{"title":"roupa","description":"guardar roupa"}}]}

我的代码：

@foreach($product->tags['data']->tags as $tag){
{{$tag->type}}
}

我的错误：无效argument supplied for foreach()

Answer 1

    $product->tags['data'] = '{"tags":[{"type":"circle","points":[[1.0449999570846558,0.5450000166893005],[0.9850000143051147,0.4399999976158142]],"popup":{"title":"my title","description":"my description"}},{"type":"rectangle","points":[[0.03500000014901161,0.125],[0.3400000035762787,0.6000000238418579]],"popup":{"title":"roupa","description":"guardar roupa"}}]}';
    $product->tags['data'] = json_decode($product->tags['data'], true);

    foreach($product->tags['data']['tags'] as $tag)
        echo $tag['type'].'<br>';

Answer 2

假设你的json是：

$json='{"tags":[{"type":"circle","points":[[1.0449999570846558,0.5450000166893005],
[0.9850000143051147,0.4399999976158142]],
"popup":{"title":"my title","description":"my description"}},
{"type":"rectangle","points":[[0.03500000014901161,0.125],
[0.3400000035762787,0.6000000238418579]],"popup":{"title":"roupa","description":"guardar roupa"}}]}';

我假设您在将json传递给视图时没有对其进行解码，因此您必须在控制器中执行此操作：

return view('sample')->with('data',json_decode($json));

json_decode 是将您的json数据解码为可在刀片中迭代的函数。

现在，在您的刀片模板中，您可以像这样遍历标记：

@foreach($data->tags as $tag)
  {{$tag->type}}
  <br/>
@endforeach

迭代刀片json数据

2 个答案: