Components

Places Autocomplete

GitHub

A Stimulus controller for Google Places Autocomplete.

Installation

  1. Install the package

    Terminal
    $ yarn add stimulus-places-autocomplete

  2. Register the controller in your application

    app/javascript/controllers/index.js
    import { Application } from '@hotwired/stimulus'
import PlacesAutocomplete from 'stimulus-places-autocomplete'

const application = Application.start()
application.register('places-autocomplete', PlacesAutocomplete)

Google Maps Callback

Load the Google Maps Api JavaScript in your <head>:

app/views/index.html
<head>
  <script
    src="https://maps.googleapis.com/maps/api/js?key={your_key_here}&libraries=places&callback=initAutocomplete"
    async=""
    defer=""
  ></script>
</head>

Define a callback to trigger the PlacesAutocomplete controller in your views:

app/views/index.html
window.initAutocomplete = function () {
  const event = new Event("google-maps-callback", {
    bubbles: true,
    cancelable: true,
  })

  window.dispatchEvent(event)
}

👉 Tip: You don't need this callback if you add the <div> asynchronously in your DOM.

Usage

app/views/index.html
<div
  data-controller="places-autocomplete"
  data-action="google-maps-callback@window->places-autocomplete#initAutocomplete"
  data-places-autocomplete-country-value='["fr"]'
>
  <input
    type="text"
    data-action="keydown->places-autocomplete#preventSubmit"
    data-places-autocomplete-target="address"
    placeholder="Search a location"
  />

  <input type="hidden" data-places-autocomplete-target="city" />
  <input type="hidden" data-places-autocomplete-target="streetNumber" />
  <input type="hidden" data-places-autocomplete-target="route" />
  <input type="hidden" data-places-autocomplete-target="county" />
  <input type="hidden" data-places-autocomplete-target="state" />
  <input type="hidden" data-places-autocomplete-target="postalCode" />
  <input type="hidden" data-places-autocomplete-target="country" />

  <input type="hidden" data-places-autocomplete-target="longitude" />
  <input type="hidden" data-places-autocomplete-target="latitude" />
</div>

Configuration

AttributeDefaultDescriptionOptional
data-places-autocomplete-country-value[]Array of countries the autocomplete is restricted to.
Must be parseable by JSON.parse.		✅

If a target does not exist, it will be ignored.

Extending Controller

You can use inheritance to extend the functionality of any Stimulus component:

app/javascript/controllers/places_autocomplete_controller.js
import PlacesAutocomplete from "stimulus-places-autocomplete"

export default class extends PlacesAutocomplete {
  connect() {
    super.connect()
    console.log("Do what you want here.")

    // The google.maps.places.Autocomplete instance.
    this.autocomplete
  }

  // You can override the `initAutocomplete` method here.
  initAutocomplete() {
    super.initAutocomplete()
  }

  // You can override the `placeChanged` method here.
  placeChanged() {
    super.placeChanged()
  }

  // You can set the Autocomplete options in this getter.
  get autocompleteOptions() {
    return {
      fields: ["address_components", "geometry"],
    }
  }
}

This controller will automatically have access to targets defined in the parent class.

If you override the connect, disconnect or any other methods from the parent, you'll want to call super.method() to make sure the parent functionality is executed.