[英]How can I get a file uploaded from a view in Laravel?
我试图在控制器中的Request
捕获CSV文件。 我一直在阅读有关在Laravel中使用文件系统的文档 ,但它似乎返回NULL
。
在我的控制器内部:
public function index(Request $request)
{
$file = $request->file('dataframe'); # This returns null every time
if(isset($file)):
$dataset = new CsvDataset($file, 1);
$vectorizer = new TokenCountVectorizer(new WordTokenizer());
$tfIdfTransformer = new TfIdfTransformer();
$samples = [];
foreach ($dataset->getSamples() as $sample)
$samples[] = $sample[0];
$vectorizer->fit($samples);
$vectorizer->transform($samples);
$tfIdfTransformer->fit($samples);
$tfIdfTransformer->transform($samples);
$dataset = new ArrayDataset($samples, $dataset->getTargets());
$randomSplit = new StratifiedRandomSplit($dataset, 0.1);
$classifier = new SVC(Kernel::RBF, 10000);
$classifier->train($randomSplit->getTrainSamples(), $randomSplit->getTrainLabels());
$predictedLabels = $classifier->predict($randomSplit->getTestSamples());
$viewVar = (object) [
'labels' => $predictedLabels,
'score' => Accuracy::score($randomSplit->getTestLabels(), $predictedLabels)
];
return view('home')->with('prediction', $viewVar);
endif;
return view('home');
}
我的观点:
<p>You can upload your dataframe below.</p>
<form method='GET'>
<input type='file' name='dataframe'>
<button type='submit' name='upload'>Predict</button>
</form>
@if (isset($prediction))
<p> Score: {{ $prediction->score }} </p>
@endif
当我var_dump()
请求时,我可以看到上传的languages.csv
文件。 如何在$request
变量中访问此文件?
如果要提交文档,则必须使用POST和enctype:
<form method='POST' enctype="multipart/form-data">
<input type='file' name='dataframe'>
<button type='submit' name='upload'>Predict</button>
</form>
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