"file upload validation" Code Answer's
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file upload validation
app.post('/upload-profile-pic', (req, res) => {
// 'profile_pic' is the name of our file input field in the HTML form
let upload = multer({ storage: storage, fileFilter: helpers.imageFilter }).single('profile_pic');
upload(req, res, function(err) {
// req.file contains information of uploaded file
// req.body contains information of text fields, if there were any
if (req.fileValidationError) {
return res.send(req.fileValidationError);
}
else if (!req.file) {
return res.send('Please select an image to upload');
}
else if (err instanceof multer.MulterError) {
return res.send(err);
}
else if (err) {
return res.send(err);
}
// Display uploaded image for user validation
res.send(`You have uploaded this image: <hr/><img src="${req.file.path}" width="500"><hr /><a href="./">Upload another image</a>`);
});
});
Source: stackabuse.com
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