i am not able to get the data throught below code in nodejs ? it shows TypeError: Converting circular structure to JSON

Question

app.get('/students', (req, res)=>{
 const studentsData = Student.find();
 studentsData.then(()=>{
    res.status(200).send(studentsData);
   }).catch((e)=>{
    console.log(e);
    res.status(400).send(e);
  })
  })

I am getting error says that :- TypeError: Converting circular structure to JSON

Answer 1

You should use the result of the promise to send back, instead of the promise itself:

app.get('/students', (req, res)=>{
 const studentsData = Student.find();
 studentsData.then(result => {
    res.status(200).send(result);
 }).catch((e)=>{
  console.log(e);
  res.status(400).send(e);
 })
})