mongo mongoose schema object code example

Example 1: mongoose schema type

var schema = new Schema({
  name:    String,
  binary:  Buffer,
  living:  Boolean,
  updated: { type: Date, default: Date.now },
  age:     { type: Number, min: 18, max: 65 },
  mixed:   Schema.Types.Mixed,
  _someId: Schema.Types.ObjectId,
  decimal: Schema.Types.Decimal128,
  array: [],
  ofString: [String],
  ofNumber: [Number],
  ofDates: [Date],
  ofBuffer: [Buffer],
  ofBoolean: [Boolean],
  ofMixed: [Schema.Types.Mixed],
  ofObjectId: [Schema.Types.ObjectId],
  ofArrays: [[]],
  ofArrayOfNumbers: [[Number]],
  nested: {
    stuff: { type: String, lowercase: true, trim: true }
  },
  map: Map,
  mapOfString: {
    type: Map,
    of: String
  }
})

// example use

var Thing = mongoose.model('Thing', schema);

var m = new Thing;
m.name = 'Statue of Liberty';
m.age = 125;
m.updated = new Date;
m.binary = Buffer.alloc(0);
m.living = false;
m.mixed = { any: { thing: 'i want' } };
m.markModified('mixed');
m._someId = new mongoose.Types.ObjectId;
m.array.push(1);
m.ofString.push("strings!");
m.ofNumber.unshift(1,2,3,4);
m.ofDates.addToSet(new Date);
m.ofBuffer.pop();
m.ofMixed = [1, [], 'three', { four: 5 }];
m.nested.stuff = 'good';
m.map = new Map([['key', 'value']]);
m.save(callback);

Example 2: how to delete popultate subdocument mongoose

exports.feed = function (req, res) {
  var userIds = req.user.friends;

  Surf
    .find({user_id: {$in: userIds}})
    .populate('user_id', 'name boards') // added boards
    .populate('friends', 'name')
    // .populate('board_id', 'name size') // can't do this as discussed
    .exec(function (err, surfs) {
      if (err) {
        return handleError(res, err);
      }

      surfs.forEach(function (surf) {
        surf.boardInfo = surf.user_id.boards.id(surf.board_id)
      });
      // TODO: now remove the surf.user_id.boards.
      return res.json(200, surfs);
    });

};