This is the format I use to write controllers and routes in Express
controller
exports.postBlog = async (req, res, next) => {...}
routes
router.route("/post").post(onlyAdmin, postBlog);
*onlyAdmin is a protection middleware
I want to add the multer method below in the controller just before the async (req, res, next) so that the uploading logic is handled by the controller not the router
upload.single("image")
call multer upload middleware from the controller:
const multer = require('multer');
const upload = multer().single('image');
exports.postBlog = async (req, res, next) => {
upload(req, res, function (err) {
//...
}
}
Since route handlers accept arrays too, you can to this:
exports.postBlog = [
upload.single("image"),
async (req, res, next) => {...}
];