A tree structure for sails-mongo (Waterline) using the materialized path pattern

Installations

Install using npm install sails-mongo-tree --save

Integration

In order to transform your model into a tree like structure call tree.seed() and pass on your schema as argument

//api/models/User.js

var tree = require('sails-mongo-tree')

module.exports = tree.seed({
  attributes: {
    firstName: { type: 'string' },
    lastName: { type: 'string' }
  }
})

It adds a parent field and a __path field to your model. parent is a reference to the immediate parent and __path is used to implement the materialized path algorithm.

Attribute Methods available

Get Parent

model.getParent(function(err, parent){})

Get immediate children

model.getChildren(function(err, children){})

Get all children and grand children

model.getChildren(true, function(err, allChildren){})

Get all ancestors including parent

model.getAncestors(function(err, ancestors){})

Get Level

model.level()