How to check if a certain file already exists in symfony2? - php

Question

I am working on symfony2 and currently I want to check if a file does exist. My scenario look something like this,, I have two files excel file and the docx file. If a person have an excel file for her/his transaction then it is automatically that the docx file is not applicable for her or him.And vice versa. How can I possibly do it in symfony2? A lot in the net but I don't know how to do it in my case,, thanks a lot :)
UPDATE
Controller:
public function documentType ($doc_type) {
$em = $this->getDoctrine()->getEntityManager();
$result = $em->getRepository('SupplierBundle:SupplierTransactionDetails')->findDocumentType('xlsx');
$result1 = $em->getRepository('SupplierBundle:SupplierTransactionDetails')->findDocumentType('docx');
// statement that will know if the file exists for that certain user if so the other document type will be not applicable for that user. Example: that user have docx file already then the xlsx will be N/A and vice versa
}
Repository :
public function findDocumentType ($doc_type) {
$em = $this->getEntityManager();
$query = $em->createQuery(
'SELECT a, b, c FROM SupplierBundle:SupplierTransaction Details a
JOIN a.supplierTransaction b
JOIN b.supplierDocType c
WHERE c.docType LIKE :doc_type'
)->setParameter('doc_type', $doc_type);
return $query->getResult();
}

Answer 1

You can just use plain PHP for this. For example:
$xls = 'sheet.xlsx';
$doc = 'document.docx';
if (file_exists($xls)) {
// User has an XLSX file
echo 'Download your sheet here.';
} elseif (file_exists($doc)) {
// User has a DOCX file
echo 'Download your document here.';
}

Answer 2

If you want to do it the Symfony2 way, you can use the Filesystem class, it has an exists() function. In a controller an instance is automatically available in the service container:
$em = $this->getDoctrine()->getManager();
$xlsx = $em->getRepository('SupplierBundle:SupplierTransactionDetail')->findDocumentType‌('xlsx');
$docx = $em->getRepository('SupplierBundle:SupplierTransactionDetail')->findDocumnetType‌('docx');
return [
'xlsx' => $xlsx instanceof SupplierTransactionDetail && $this->get('filesystem')->exists($xlsx->getFile()) ? $xlsx->getFile() : null,
'docx' => $docx instanceof SupplierTransactionDetail && $this->get('filesystem')->exists($docx->getFile()) ? $docx->getFile() : null,
];
In your twig template:
{% if xlsx is not empty %}
{{ xlsx }}
{% endif %}
{% if docx is not empty %}
{{ docx }}
{% endif %}