Data not saving to mongodb - node.js

Question

I'm currently trying upload images to a database by using Mutler and GridFS - which is successful. But I'm also trying to create a caption via the same form, but saving the data into a different schema. My problem is that on the POST route, it's not saving the data to the Posts schema - but no errors are being returned - but as well as that, I'm not being redirected the index page.
model.js schema for caption data
const mongoose = require('mongoose');
const Schema = mongoose.Schema;
const PostSchema = new Schema({
caption: {
type: String,
},
fileID: {
type: mongoose.Schema.Types.ObjectId,
ref: 'fs' //created by multer gridfs storage
}
});
const Posts = mongoose.model('Posts', PostSchema);
module.exports = { Posts };
app.js
// Middleware
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }))
app.use(methodOverride("_method"));
app.set("view engine", "ejs");
// Mongo URI
const mongoURI = "mongodb://localhost:27017/grid-fs";
// Mongo connection
const connection = mongoose.createConnection(mongoURI, { useNewUrlParser: true });
// Mongoose Schema
const { Posts } = require('./models/model');
// Init gfs
let gfs;
connection.once("open", () => {
// Init stream
gfs = Grid(connection.db, mongoose.mongo);
gfs.collection("uploads");
})
// Create storage engine
const storage = new GridFsStorage({
url: mongoURI,
file: (req, file) => {
return new Promise((resolve, reject) => {
crypto.randomBytes(16, (err, buf) => {
if (err) {
return reject(err);
}
const filename = buf.toString("hex") + path.extname(file.originalname);
const fileInfo = {
filename: filename,
bucketName: "uploads"
};
resolve(fileInfo);
});
});
}
});
const upload = multer({ storage });
app.get("/", (req, res) => {
gfs.files.find().toArray((err, files) => {
// Check if files exist
if (!files || files.length === 0) {
res.render("index", {files: false})
} else {
files.map(file => {
if(file.contentType === "image/jpeg" || file.contentType === "image/png") {
file.isImage = true;
} else {
file.isImate = false;
}
});
res.render('index', {files: files})
}
});
})
app.post('/upload', upload.single('file'), (req, res) => {
console.log(req.file)
const post = new Posts({
caption: req.body.caption,
fileID: req.file.id
});
console.log(req.body.caption)
console.log(req.file.id)
console.log(post)
post.save().then( result => {
res.redirect('/');
}).catch(err => {
res.status(400).send("Unable to save data");
});
});
I refresh the page the image is pushed to the frontend, but when I check the database the caption content is missing - no schema is there:

Answer 1

try this db.getCollectionNames() and check if your collection is there or not if it doesnot exists
try this
Posts.create({
caption: req.body.caption,
fileID: req.file.id
}, (err, data) => {
if (err) res.status(400).send("Unable to save");
else {
res.redirect("/")
}
})