tejazz/gridfs-file-storage

GridFS file storage enabled application to store and retrieve files and images.

gridfs-file-storage's Issues

Question : how do you update a file?

What is the recommended approach to update a file?

req.body is empty

Hi I tried this code below with values for both caption and filename:

`
let formData = new FormData();

formData.append('caption', caption);

formData.append('file', {
name: filename
});

console.log('upload File formData: ', formData);

axios.post('http://localhost:9890/', formData)
.then((response) => {
response.data.success ? alert('File successfully uploaded') : alert('File already exists');
this.fetchRecent();
})
.catch(err => alert('Error: ' + err));
`

When I uploaded an image file, on the server side, the logging showed the req.body is empty and req.file is undefined:

Upload single file req.body: {}
Upload single file req.file: undefined

The server side code:

`
imageRouter.route('/')

    .post(upload.single('file'), (req, res, next) => {

        console.log(req.body);

        // check for existing images
        Image.findOne({ caption: req.body.caption })

            .then((image) => {
                console.log(image);
                if (image) {
                    return res.status(200).json({
                        success: false,
                        message: 'Image already exists',
                    });
                } 

`
...
Do you have an idea what I did wrong?
Thanks

gfs is undefined

I'm trying to connect to the database and declare the gfs variable in one file and share it to another file where I want to fetch the file details

mongo.connection.js

const mongoose = require("mongoose");
const Grid = require("gridfs-stream");

let gfs;

const establishConnection = async () => {
  try {
    mongoose.set("strictQuery", false);
    await mongoose.connect(process.env.DB_URI, {
      useNewUrlParser: true,
      useUnifiedTopology: true,
    });
    const connect = mongoose.connection;

    connect.on("error", (err) => {
      console.error("Mongoose connection error:", err);
    });

    connect.once("open", () => {
      gfs = new mongoose.mongo.GridFSBucket(connect.db, { bucketName: "uploads" });
      console.log("Mongoose connection successful.");
    });
  } catch (err) {
    console.error("Mongoose connection error:", err);
    throw err;
  }
};

const getGfsInstance = () => {
  if (!gfs) {
    throw new Error("Connection not established. Call establishConnection first.");
  }
  return gfs;
};

module.exports = { establishConnection, getGfsInstance };

user.controller.js

const { gfs } = require("../connnection/mongo.connection");

exports.postRetriveAll = async (res, req) => {
  try {
    // await establishConnection();

    console.log("Retrieved gfs:", gfs);

    // Retrieve all file details from the "uploads" bucket
    gfs.find({}).toArray((err, files) => {
      if (err) {
        console.error("Error:", err);
      } else {
        console.log("Files:", files);
      }
    });
  } 
  catch (err) {
    console.log(err);
    return err;
  }
};

Output

Mongoose connection successful.
Retrieved gfs: undefined
TypeError: Cannot read properties of undefined (reading 'find')

i have called establishConnection() function in app.js file initially and also called it once again in user.controller.js but it didn't worked i also used the promise method but it didn't work

Download File in Client

I've been trying to follow your tutorial and so far I'm stuck on how to download the file in the client

imageRouter.route("/file/:filename").get((req, res, next) => {
   gfs.find({ filename: req.params.filename }).toArray((err, files) => {
     if (!files[0] || files.length === 0) {
       return res.status(200).json({
         success: false,
         message: "No files available",
       });
     }
     console.log("getter", files[0]);
     res.status(200).json({
       success: true,
       file: files[0],
     });
   });
 });

I am using React and already spent two days trying to download the file in the client. I know the the uploading is right since I can see the file and download the file using sa NoSQLBooster MongoDB Client

My use case is when i have the list the user can have the option to download the file..

Thanks