CODEWITHSUNDEEP
javascriptnode.jsexpressmulter
Indrakant
Indrakant

Reputation: 411

Getting error while making API call for multer to store files

I created a node API using multer to store files and i'm getting error while calling it, please help. Bellow is the code and error -

Code -

const storage = multer.diskStorage({
    destination: './public/upload',
    filename: function(req, file, cb){
        cb(null, file.fieldname + '-' + Date.now() + path.extname(file.originalname));
    }
});

// initialize upload
const upload = multer({
    storage: storage,
    limits: {fieldSize: 100000}
}).single('myImage');

app.post('/upload', (req, res)=> {  
    upload(req, res, (err) => {
        if(err){
            res.json({
                msg: req.body,
            });
        }else {
            res.json({
                msg: 'File uploaded',
                file: `upload/${req.file.filename}`
            });
        }
    })
})

The error i'm getting while making API call is "name": "MulterError", "message": "Unexpected field", "code": "LIMIT_UNEXPECTED_FILE", "storageErrors": []

Upvotes: 0

Views: 3259

Answers (3)

Magic Realism
Magic Realism

Reputation: 19

limits: {fileSize: 100000}

I didn't check it but I believe it has to be fileSize not fieldSize, probably

Upvotes: 0

Adebayo Ilerioluwa
Adebayo Ilerioluwa

Reputation: 339

On your Frontend code have you made sure the input name is myImage

If you are using HTML try using this code

   <input type=“file” name=“myImage” />

Suppose you are using the front end framework react

This piece of code should be in the submit/ uploadFile function 

  const uploadFile = (e) =>{
       e.preventDefault();
      let file = e.target.files[0];
      let data = new FormData();
      data.append('myImage', file);
      axios.post('http://localhost:5000/upload', data, {
          headers: {
            'Content-Type': 'multipart/form-data'
          }
      }).then(res => this.setState({file: res.data.file}));
    }

I hope this helps

Upvotes: 0

Indrakant
Indrakant

Reputation: 411

Passing the filename works for me -

uploadFile = (e) =>{
  let file = e.target.files[0];
  let data = new FormData();
  data.append('myImage', file);
  axios.post('http://localhost:5000/upload', data, {
      headers: {
        'Content-Type': 'multipart/form-data'
      }
  }).then(res => this.setState({file: res.data.file}));
}

Upvotes: 1

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