I'm encountering an issue while attempting to upload multipart form data using multer. I have integrated swagger express middleware for my APIs. Strangely, everything was functioning correctly before implementing swagger. However, after integrating swagger, the file does not get uploaded. There are no validation errors being displayed, but the file simply fails to upload. Below is some relevant code that you may find helpful:
app.js
SwaggerExpress.create(config, function(err, swaggerExpress) {
if (err) { throw err; }
swaggerExpress.register(app);
var port = 8850;
https.createServer(options, app).listen(port, function () {
console.log('Bus993 server started @ %s!', port);
});
});
upload function
function uploadImage(req, res, multer){
console.log("here", req.files);
//ABOVE SHOWS A VALID FILE
var storage = multer.diskStorage({
destination: function (req, file, cb) {
console.log("fILE", file);
//THIS IS NOT PRINTED
cb(null, '../../public/images');
},
filename: function (req, file, cb) {
console.log(file);
//THIS IS NOT PRINTED
cb(null, file.originalname.replace(/[.]{1}[a-zA-Z]+$/, "") + '_' + moment().format('X') + getExtension(file));
}
});
var upload = multer({storage: storage, fileFilter: fileFilter}).single('imageFile');
upload(req, res, function (err) {
if (err) {
res.status(422).json(
{
status: "error",
data: {error: err.message},
message: "Image upload failed."
}
);
} else {
res.status(200).json(
{
status: "success",
data: "",
message: "Image uploaded successfully."
}
);
}
});
function fileFilter(req, file, cb) {
console.log("fILE", file);
if ((file.mimetype != 'image/jpeg' && file.mimetype != 'image/png' && file.mimetype != 'image/gif') || file.size > 8000) {
cb(new Error('Invalid file.'), false);
} else {
cb(null, true);
}
}
function getExtension(file) {
var res = '';
if (file.mimetype === 'image/jpeg') res = '.jpg';
if (file.mimetype === 'image/png') res = '.png';
if (file.mimetype === 'image/gif') res = '.gif';
return res;
}
}
It appears that the issue lies in the fact that file is undefined when using swagger. Previously, this was not a problem. Now, even though it returns a status of success, the image is still not uploaded.
Could there be an error in my implementation?