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Mongoose - How to create a common method for all models?

I have a generic method that I need to implement for all models. Right now I am doing this for each model:

var Product = module.exports = mongoose.model('Product', ProductSchema);

module.exports.flush = function (filename, cb) {
  "use strict";

  var collection = require(filename);

  // todo: reimplement with promises
  this.remove({}, function (err) {
    if (err) {
      console.log(err);
    }
    else {
      this.create(collection, cb);
    }
  }.bind(this));
};

How can I add this method once so that it exists for all models?

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1 answer


Just define your function for Model

:

var mongoose = require('mongoose');
mongoose.Model.flush = function (filename, cb) {
  "use strict";

  var collection = require(filename);

  // todo: reimplement with promises
  this.remove({}, function (err) {
    if (err) {
      console.log(err);
    }
    else {
      this.create(collection, cb);
    }
  }.bind(this));
};


Then all the models you create inherit the function flush

:

var Product = module.exports = mongoose.model('Product', ProductSchema);
Product.flush();
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