Keep your references to attributes synchronized.

This project is continuously tested on Node 0.12 and Node 4.0. Compatible with Mongoose 3.8 and above.

Install

$ npm install mongoose-orchestrator

Use

const mongoose = require('mongoose');
const ObjectId = mongoose.Schema.Types.ObjectId;


const UserSchema = mongoose.Schema({

  name: { type: String, required: true },

  country: { type: ObjectId, ref: 'Country' },
  countryName: { type: String, ref: 'Country.name', sync: true }
});

UserSchema.plugin(require('mongoose-orchestrator'));

Use the key sync: true on your schema, that's the way mongoose-orchestrator will look for attributes that needs to be synchronized.

Have an attribute with a lowercased version of the model name.

The ref key on the attributes object means the attribute to lookup, using the following nomenclature: <<MODEL_NAME>>.<<ATTRIBUTE_NAME>>. For example, Country.name means the attribute name in the Country model.

Require the mongoose-orchestrator plugin for the schema.

Specifying a source

The source keyword is the attribute of the instance where the reference will be stored. As default, is a lowercased version of the reference model.

You can create a schema as the following:

mongoose.Schema({

  name: { type: String, required: true },

  country: {
    id: { type: ObjectId, ref: 'Country' },
    name: { type: String, ref: 'Country.name', sync: true, source: 'country.id' }
  }

});

Default: modelName.toLowerCase();

Transformations

Set a transformation for the referenced attribute. This function will be applied to the value before persisting it.

mongoose.Schema({

  name: { type: String, required: true },

  country: {
    id: {
      type: ObjectId,
      ref: 'Country'
    },
    name: {
      type: String,
      ref: 'Country.name',
      sync: true,
      source: 'country.id'
    },
    nameInitial: {
      type: String,
      ref: 'Country.name',
      sync: true,

      // Set the transformation function.
      transformation: function(value) {
        return (value.length) ? value[0] : '';
      }
    }
  }

});

Default: function (value) { return value; }.

Example

const mongoose = require('mongoose');
const mongooseOrchestrator = require('mongoose-orchestrator');
const ObjectId = mongoose.Schema.Types.ObjectId;

// Create and register the `Season` model.

const SeasonSchema = new mongoose.Schema({

  name: {type: String, required: true}

});

mongoose.model('Season', SeasonSchema);


// Create and register the `Episode` model.

const EpisodeSchema = new mongoose.Schema({

  name: {type: String, required: true},

  season: {type: ObjectId, ref: 'Season'},
  seasonName: {type: String, ref: 'Season.name', sync: true}

});

EpisodeSchema.plugin(mongooseOrchestrator);

mongoose.model('Episode', EpisodeSchema);

Under the hood...

LICENSE

The MIT License (MIT)

Copyright (c) 2016 Rodrigo Espinosa

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.