使用nodejs在mongodb中删除对象导致错误

Question

Hello am trying to delete object in my mongodb using nodejs. Here is my code :

module.exports.deletetopic = function (req, res) {
//var id = JSON.parse(req.body)._id;
var idd = req.query.id;
console.log('iddd dans serveur ' + idd);
Topic.findById(idd, function(err, topic) {
  if (err) throw err;


//console.log(topic.title);

  topic.delete(function(err) {
    if (err) throw err;

    console.log('Topic successfully deleted!');
  });

});
}

But i get the following error : topic.delete is not a function

And here is how i call it on my client side :

$scope.deletetopic = function (id) {
  console.log('id est de ' + id);
  $http.delete('/api/deletetopic', {params:{id:id}});
  }

Can you help

Answer 1

You should use db.collection.remove() to remove documents from a collection in MongoDb.

topic.remove(function(err) {
   if (err) throw err;
   console.log('Topic successfully deleted!');
});

Also as suggested you should follow these practices as well.

Topic.findById({id: idd}, function(err, topic) {
...
...
if(topic){
   // your query
}
else{
   console.log('some message');
}

Answer 2

You can remove document by using ModelName.remove({_id:receivedId})

Topic.remove({_id:idd}).exec(function (err,doc) {
  if (err) {
    return res.status(400).send('Error while deleting');
  }
  if(doc.result.n != 0){
    return res.status(200).send('Deleted');
  }
  return res.status(400).send('Not found');
});