I am having a issue while saving the image file in MognoDB. It is saying the error
(node:14849) UnhandledPromiseRejectionWarning: Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client
While I searched for the error solution, it was said that I am sending the result after it is sent. I am checking my code it is not like that. Can anyone help me with this to find the error please?
imageUpload.js
const multer = require("multer");
const uploadImage = require("../../models/fileUpload");
const Storage = multer.diskStorage({
destination: "uploads",
filename: function (req, file, cb) {
const uniqueSuffix = Date.now() + "-" + Math.round(Math.random() * 1e9);
cb(null, file.fieldname + "-" + uniqueSuffix);
},
});
const upload = multer({
storage: Storage,
limits: {
fileSize: 1024 * 1024 * 5,
},
}).single("testImage");
const imageUpload = async (req, res) => {
try {
upload(req, res, (err) => {
if (err)
res.status(400).json({
success: false,
message: "Saving Failed",
});
const newImage = new uploadImage({
name: req.body.name,
image: {
data: req.body.image,
contentType: "image/png",
},
});
newImage
.save()
.then(() => {
res.status(201).json({
success: true,
msg: "Saved Successfully",
});
})
.catch((error) => {
res.status(500).json({
success: false,
msg: error.data,
});
});
});
} catch (err) {
console.log(err);
}
};
module.exports = { imageUpload };
return before sending response to client add return before every response you sent it will fix the error and also its a good habbit
I couldn't properly defined the if condition with else.
Here is the code below rewritten.
imageUpload.js
const multer = require("multer");
const uploadImage = require("../../models/fileUpload");
// const Storage = multer.diskStorage({
// destination: "uploads",
// filename: function (req, file, cb) {
// const uniqueSuffix = Date.now() + "-" + Math.round(Math.random() * 1e9);
// cb(null, file.fieldname + "-" + uniqueSuffix);
// },
// });
const upload = multer({
// storage: Storage,
limits: {
fileSize: 1024 * 1024 * 5,
},
}).single("testImage");
const imageUpload = async (req, res) => {
try {
upload(req, res, (err) => {
if (err) {
res.status(400).json({
success: false,
message: "Saving Failed",
});
} else {
const newImage = new uploadImage({
name: req.body.name,
image: {
data: req.body.image,
contentType: "image/png",
},
});
newImage
.save()
.then(() => {
res.status(201).json({
success: true,
msg: "Saved Successfully",
});
})
.catch((error) => {
res.status(500).json({
success: false,
msg: error.data,
});
});
}
});
} catch (err) {
console.log(err);
}
};
module.exports = { imageUpload };