Fuzzy searching with fuse.js on Backbone Collections

FuzzySearchCollection.coffee

class FuzzySearchCollection extends Backbone.Collection

    #
    # Fuzzy searching with fuse.js
    #
    # 1. populate searchableFields with the model attributes you want to search on
    # 2. collection.buildSearchIndex(), with optional options -> http://kiro.me/projects/fuse.html#options
    # 3. collection.search 'query'
    #
    searchableFields: []

    buildSearchIndex: (options = {}) ->
        defaultOptions =
            keys: @searchableFields
            id: 'id'

        @_fuse = new Fuse _.pluck(@models, 'attributes'), _.defaults(options, defaultOptions)

    # returns copy of collection with search results
    search: (query) ->
        searchResults = _(@_fuse.search query)
        @filter (task) =>
            searchResults.contains(task.get 'id')