Answers for "Mongoose model functions"

create document mongoose

var Tank = mongoose.model('Tank', yourSchema);

var small = new Tank({ size: 'small' });
small.save(function (err) {
  if (err) return handleError(err);
  // saved!
});

// or

Tank.create({ size: 'small' }, function (err, small) {
  if (err) return handleError(err);
  // saved!
});

// or, for inserting large batches of documents
Tank.insertMany([{ size: 'small' }], function(err) {

});

mongoose model

const schema = new mongoose.Schema({ name: 'string', size: 'string' });
const Tank = mongoose.model('Tank', schema);

model mongoose

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

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

Mongoose model functions

// Define a `Person` model. Schema has 2 custom getters and a `fullName`
// virtual. Neither the getters nor the virtuals will run if lean is enabled.
const personSchema = new mongoose.Schema({
  firstName: {
    type: String,
    get: capitalizeFirstLetter
  },
  lastName: {
    type: String,
    get: capitalizeFirstLetter
  }
});
personSchema.virtual('fullName').get(function() {
  return `${this.firstName} ${this.lastName}`;
});
function capitalizeFirstLetter(v) {
  // Convert 'bob' -> 'Bob'
  return v.charAt(0).toUpperCase() + v.substr(1);
}
const Person = mongoose.model('Person', personSchema);

// Create a doc and load it as a lean doc
await Person.create({ firstName: 'benjamin', lastName: 'sisko' });
const normalDoc = await Person.findOne();
const leanDoc = await Person.findOne().lean();

normalDoc.fullName; // 'Benjamin Sisko'
normalDoc.firstName; // 'Benjamin', because of `capitalizeFirstLetter()`
normalDoc.lastName; // 'Sisko', because of `capitalizeFirstLetter()`

leanDoc.fullName; // undefined
leanDoc.firstName; // 'benjamin', custom getter doesn't run
leanDoc.lastName; // 'sisko', custom getter doesn't run