react-google-typeahead

A React component to build a customized UI for Google Maps Places Autocomplete (Demo)

Features

1. Enable you to easily build a customized autocomplete dropdown powered by Google Maps Places Library
2. Utility function to get latitude and longitude using Google Maps Geocoder API
3. Airbnb style typeahead input field

Installation

To install the stable version

npm install react-google-typeahead --save

The React component is exported as a default export

import PlacesAutocomplete from 'react-google-typeahead'

geocodeByAddress and geocodeByPlaceId utility functions are named exports

import { geocodeByAddress, geocodeByPlaceId } from 'react-google-typeahead'

Demo

See live demo: kenny-hibino.github.io/react-google-typeahead/

To build the example locally, clone this repo and then run:

npm run demo

Getting Started

To use this component, you are going to need to load Google Maps JavaScript API

Load the library in your project

<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places"></script>

Declare your PlacesAutocomplete component using React component

import React from 'react'
import PlacesAutocomplete, { geocodeByAddress } from 'react-google-typeahead'

class SimpleForm extends React.Component {
  constructor(props) {
    super(props)
    this.state = { address: 'San Francisco, CA' }
    this.onChange = (address) => this.setState({ address })
  }

  handleFormSubmit = (event) => {
    event.preventDefault()
    const { address } = this.state

    geocodeByAddress(address,  (err, { lat, lng }) => {
      if (err) { console.log('Oh no!', err) }

      console.log(`Yay! got latitude and longitude for ${address}`, { lat, lng })
    })
  }

  render() {
    return (
      <form onSubmit={this.handleFormSubmit}>
        <PlacesAutocomplete
          value={this.state.address}
          onChange={this.onChange}
        />
        <button type="submit">Submit</button>
      </form>
    )
  }
}

export default SimpleForm

Props for PlacesAutocomplete

Require Props:

• value
• onChange

Optional Props:

• autocompleteItem
• typeAhead
• classNames
• styles
• placeholder
• onError
• clearItemsOnError
• onSelect
• onEnterKeyDown
• options
• autoFocus
• inputName
• inputId
• forceItemSelection

value

Type: String, Required: true

Value displayed in the input field

onChange

Type: Function, Required: true

Please see the example above

autocompleteItem

Type: Functional React Component, Required: false

The function takes props with suggestion, formattedSuggestion keys (see the example below). We highly recommend that you create your own custom AutocompleteItem and pass it as a prop.

/***********************************************
 Example #1
 autocompleteItem example with `suggestion`
************************************************/
render() {
  const AutocompleteItem = ({ suggestion }) => (<div><i className="fa fa-map-marker"/>{suggestion}</div>)

  return (
    <PlacesAutocomplete
      value={this.state.value}
      onChange={this.onChange}
      autocompleteItem={AutocompleteItem}
    />
  )
}

/***************************************************
 Example #2
 autocompleteItem example with `formattedSuggestion`
****************************************************/
render() {
  const AutocompleteItem = ({ formattedSuggestion }) => (
    <div>
      <strong>{ formattedSuggestion.mainText }</strong>{' '}
      <small>{ formattedSuggestion.secondaryText }</small>
    </div>
  )

  return (
    <PlacesAutocomplete
      value={this.state.value}
      onChange={this.onChange}
      autocompleteItem={AutocompleteItem}
    />
  )
}

typeAhead

Type: Boolean Required: false Default: false

You can enable/disable Airbnb style soft autocomplete in the input field. (NOTE: This feature is experimental and not supported in mobile browsers)

classNames

Type: Object, Required: false

You can give a custom css classes to elements. Accepted keys are root, input, autocompleteContainer

// classNames example
render() {
  const cssClasses = {
    root: 'form-group',
    input: 'form-control',
    autocompleteContainer: 'my-autocomplete-container'
  }

  return (
    <PlacesAutocomplete
      value={this.state.address}
      onChange={this.onChange}
      classNames={cssClasses}
    />
  )
}

Now you can easily apply custom CSS styles using the classNames!

styles

Type Object, Required: false

You can provide custom inline styles to elements. Accepted keys are root, input, autocompleteContainer, autocompleteItem, autocompleteItemActive

// custom style examples
render() {
  const myStyles = {
    root: { position: 'absolute' },
    input: { width: '100%' },
    autocompleteContainer: { backgroundColor: 'green' },
    autocompleteItem: { color: 'black' },
    autocompleteItemActive: { color: 'blue' }
  }

  return (
    <PlacesAutocomplete
      value={this.state.address}
      onChange={this.onChange}
      styles={myStyles}
    />
  )
}

placeholder

Type: String, Required: false, Default: "Address"

You can pass placeholder prop to customize input's placeholder text

onError

Type: Function Required: false

You can pass onError prop to customize the behavior when google.maps.places.PlacesServiceStatus is not OK (e.g., no predictions are found)

Function takes status as a parameter

clearItemsOnError

Type: Boolean Required: false Default: false

You can pass clearItemsOnError prop to indicate whether the autocomplete predictions should be cleared when google.maps.places.PlacesServiceStatus is not OK

onSelect

Type: Function Required: false, Default: null

You can pass a function that gets called instead of onChange function when user hits the Enter key or clicks on an autocomplete item.

The function takes two positional arguments. First argument is address, second is placeId.

const handleSelect = (address, placeId) => {
  this.setState({ address, placeId })

  // You can do other things with address string or placeId. For example, geocode :)
}

// Pass this function via onSelect prop.
<PlacesAutocomplete
  value={this.state.value}
  onChange={this.handleChange}
  onSelect={this.handleSelect}
/>

onEnterKeyDown

Type: Function Required: false Deafult: noop

You can pass a callback function that gets called when pressing down Enter key when no item in the dropdown is selected.
The function takes one argument, the value in the input field.

const handleEnter = (address) => {
  geocodeByAddress(address, (err, { lat, lng }, results) => {
    if (err) { console.error('Error'); return; }

    console.log("Geocode success", { lat, lng })
  })
}

// Pass this function via onEnterKeyDown prop.
<PlacesAutocomplete
  value={this.state.value}
  onChange={this.handleChange}
  onEnterKeyDown={this.handleEnter}
/>

options

Type: Object Required: false Default: {}

You can fine-tune the settings passed to the AutocompleteService class with options prop. This prop accepts an object following the same format as google.maps.places.AutocompletionRequest (except for input, which comes from the value of the input field).

// these options will bias the autocomplete predictions toward Sydney, Australia with a radius of 2000 meters,
// and limit the results to addresses only
const options = {
  location: new google.maps.LatLng(-34, 151),
  radius: 2000,
  types: ['address']
}

<PlacesAutocomplete
  value={this.state.address}
  onChange={this.onChange}
  options={options}
/>

autoFocus

Type: Boolean Required: false Default: false

inputName

Type: String Required: false Default: Empty String

inputId

Type: String Required: false Default: Empty String

forceItemSelection

Type: Boolean Required: false Default: false

geocodeByAddress API

geocodeByAddress(address, callback)

address

Type: String, Required: true

String that gets passed to Google Maps Geocoder

callback

Type: Function, Required: true

Three arguments will be passed to the callback.

First argument is an error object, set to null when there's no error.

Second argument is an object with lat and lng keys

Third argument (optional) is entire payload from Google API

import { geocodeByAddress } from 'react-google-typeahead'

geocodeByAddress('Los Angeles, CA', (error, { lat, lng }, results) => {
  if (error) { return }

  console.log('Geocoding success!', { lat, lng })
  console.log('Entire payload from Google API', results)
})

geocodeByPlaceId API

geocodeByPlaceId(placeId, callback)

placeId

Type: String, Required: true

String that gets passed to Google Maps Geocoder

callback

Type: Function, Required: true

Three arguments will be passed to the callback.

First argument is an error object, set to null when there's no error.

Second argument is an object with lat and lng keys

Third argument (optional) is entire payload from Google API

import { geocodeByPlaceId } from 'react-google-typeahead'

geocodeByPlaceId('ChIJE9on3F3HwoAR9AhGJW_fL-I', (error, { lat, lng }, results) => {
  if (error) { return }

  console.log('Geocoding success!', { lat, lng })
  console.log('Entire payload from Google API', results)
})

Discussion

Join us on Gitter if you are interested in contributing!

License

MIT