On the fly references to attributes synchronisation.
npm install mongoose-orchestrator
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.
``bash`
$ npm install mongoose-orchestrator
`js
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: . 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:
`js
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.
`js
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; }.
`js
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...
!mongoose-orchestrator-events-example
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
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SOFTWARE.