mongoose findoneand delete code example

Example 1: mongoose find by and delete

Campground.findByIdAndRemove(req.params.id, function(err){
      if(err){
          res.redirect("/campgrounds");
      } else {
          res.redirect("/campgrounds");
      }
   });

Example 2: deleteOne mongoose

Tank.deleteOne({ size: 'large' }, function (err) {
  if (err) return handleError(err);
  // deleted at most one tank document
});

Example 3: model mongoose

const modelName = mongoose.model("collectionname", collectionSchema);

//example
const fruitSchma = new mongoose.Schema ({
  name: String
});
const Fruit = mongoose.model("Fruit", fruitSchema);

Example 4: mongoose modele

mongoose.connect('mongodb://localhost/gettingstarted', {useNewUrlParser: true,useUnifiedTopology: true});