@genny-project/react-places-autocomplete

React Places Autocomplete

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

Demo

Live demo: kenny-hibino.github.io/react-places-autocomplete/

Features

1. Enable you to easily build a customized autocomplete dropdown powered by Google Maps Places Library
2. Utility functions to geocode and get latitude and longitude using Google Maps Geocoder API
3. Pass through arbitrary props to the input element to integrate well with other libraries (e.g. Redux-Form)

Installation

To install the stable version

yarn add react-places-autocomplete

or

npm install react-places-autocomplete --save

React component is exported as a default export

import PlacesAutocomplete from 'react-places-autocomplete'

geocodeByAddress and geocodeByPlaceId utility functions are named exports

import { geocodeByAddress, geocodeByPlaceId } from 'react-places-autocomplete'

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>

Create your component

import React from 'react'
import PlacesAutocomplete, { geocodeByAddress, getLatLng } from 'react-places-autocomplete'

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()

    geocodeByAddress(this.state.address)
      .then(results => getLatLng(results[0]))
      .then(latLng => console.log('Success', latLng))
      .catch(error => console.error('Error', error))
  }

  render() {
    const inputProps = {
      value: this.state.address,
      onChange: this.onChange,
    }

    return (
      <form onSubmit={this.handleFormSubmit}>
        <PlacesAutocomplete inputProps={inputProps} />
        <button type="submit">Submit</button>
      </form>
    )
  }
}

export default SimpleForm

Props

Prop	Type	Required	Description
inputProps	object	✅	Arbitrary props to input element, value and onChange are required keys
renderSuggestion	function		Functional react component to render dropdown list item
renderFooter	function		Functional react component to render footer at the bottom of the dropdown list
classNames	object		Pass CSS classes to rendered elements
styles	object		Pass CSS styles to rendered elements
onSelect	function		Event handler to handle user's select event
onEnterKeyDown	function		Event handler that gets called when user presses Enter key while input is focused
onError	function		Error handler function that gets called when Google Maps API responds with an error
options	object		Options to Google Maps API (i.e. bounds, radius)
debounce	number		Number of milliseconds to delay before making a call to Google Maps API
highlightFirstSuggestion	boolean		If set to true, first list item in the dropdown will be automatically highlighted
shouldFetchSuggestions	function		Component will fetch suggestions from Google Maps API only when this function returns true

inputProps

Type: Object, Required: true

PlacesAutocomplete is a controlled component. Therefore, you MUST pass at least value and onChange callback to the input element.

You can pass arbitrary props to the input element thorough inputProps object (NOTE: className and style props for the input element should be passed through classNames.input and styles.input respectively).

  const inputProps = {
    value,    // `value` is required
    onChange, // `onChange` is required
    onBlur: () => {
      console.log('blur!')
    },
    type: 'search',
    placeholder: 'Search Places...',
    autoFocus: true,
  }

renderSuggestion

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 list item component and pass it as a prop.

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

  return (
    <PlacesAutocomplete
      inputProps={inputProps}
      renderSuggestion={renderSuggestion}
    />
  )
}

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

  return (
    <PlacesAutocomplete
      inputProps={inputProps}
      renderSuggestion={renderSuggestion}
    />
  )
}

renderFooter

Type: Functional React Component Required: false

You can provide a component that will get rendered at the bottom of dropdown.
For example, you can provide a component to show "Powered by Google" logo.

const renderFooter = () => (
  <div className="dropdown-footer">
    <div>
      <img src={require('./images/google-logo.png')} />
    <div>
  <div>
)

// In render function
<PlacesAutocomplete
  inputProps={inputProps}
  renderFooter={renderFooter}
/>

classNames

Type: Object, Required: false

You can give a custom css classes to elements. Accepted keys are root, input, autocompleteContainer, autocompleteItem, autocompleteItemActive. If you pass classNames props, none of the default inline styles nor inline styles from styles prop will be applied to the element, and you will have full control over styling via CSS.

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

  return (
    <PlacesAutocomplete
      inputProps={inputProps}
      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.

const defaultStyles = {
  root: {
    position: 'relative',
    paddingBottom: '0px',
  },
  input: {
    display: 'inline-block',
    width: '100%',
    padding: '10px',
  },
  autocompleteContainer: {
    position: 'absolute',
    top: '100%',
    backgroundColor: 'white',
    border: '1px solid #555555',
    width: '100%',
  },
  autocompleteItem: {
    backgroundColor: '#ffffff',
    padding: '10px',
    color: '#555555',
    cursor: 'pointer',
  },
  autocompleteItemActive: {
    backgroundColor: '#fafafa'
  },
}

Object passed via styles prop will be merged in with the above defaults and applied to their respective elements. NOTE: Passing classNames will disable any inline styling for respective elements.

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

  return (
    <PlacesAutocomplete
      inputProps={inputProps}
      styles={myStyles}
    />
  )
}

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
  inputProps={inputProps}
  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)
    .then(results => {
      console.log('results', results)
    })
}

// Pass this function via onEnterKeyDown prop.
<PlacesAutocomplete
  inputProps={inputProps}
  onEnterKeyDown={this.handleEnter}
/>

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 (string) and clearSuggestions (function) as parameters

// Log error status and clear dropdown when Google Maps API returns an error.
const onError = (status, clearSuggestions) => {
  console.log('Google Maps API returned error with status: ', status)
  clearSuggestions()
}

// In render function
<PlacesAutocomplete
  inputProps={inputProps}
  onError={onError}
/>

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']
}

// In render function
<PlacesAutocomplete
  inputProps={inputProps}
  options={options}
/>

debounce

Type: Number Required: false Default: 200

The number of milliseconds to delay before making a call to Google Maps API.

highlightFirstSuggestion

Type: Boolean Required: false Default: false

If set to true, first suggestion in the dropdown will be automatically highlighted.

shouldFetchSuggestions

Type: Function Required: false Default: () => true

You can pass a function to tell when to fetch suggestions from Google Maps API.
It takes an input { value } and should return a boolean.

// Only fetch suggestions when the input text is longer than 3 characters.
const shouldFetchSuggestions = ({ value }) => value.length > 3

// In render function
<PlacesAutocomplete
  inputProps={inputProps}
  shouldFetchSuggestions={shouldFetchSuggestions}
/>

Utility Functions

• geocodeByAddress
• geocodeByPlaceId
• getLatLng

geocodeByAddress API

/**
 * Returns a promise
 * @param {String} address
 * @return {Promise}
*/
geocodeByAddress(address)

address

Type: String, Required: true

String that gets passed to Google Maps Geocoder

import { geocodeByAddress } from 'react-places-autocomplete'

// `results` is an entire payload from Google API.
geocodeByAddress('Los Angeles, CA')
  .then(results => console.log(results))
  .catch(error => console.error(error))

geocodeByPlaceId API

/**
 * Returns a promise
 * @param {String} placeId
 * @return {Promise}
*/
geocodeByPlaceId(placeId)

placeId

Type: String, Required: true

String that gets passed to Google Maps Geocoder

import { geocodeByPlaceId } from 'react-places-autocomplete'

// `results` is an entire payload from Google API.
geocodeByPlaceId('ChIJE9on3F3HwoAR9AhGJW_fL-I')
  .then(results => console.log(results))
  .catch(error => console.error(error))

getLatLng API

/**
 * Returns a promise
 * @param {Object} result
 * @return {Promise}
*/
getLatLng(result)

result

Type: Object Required: true

One of the element from results (returned from Google Maps Geocoder)

import { geocodeByAddress, getLatLng } from 'react-places-autocomplete'

geocodeByAddress('Tokyo, Japan')
  .then(results => getLatLng(results[0]))
  .then(({ lat, lng }) => console.log('Successfully got latitude and longitude', { lat, lng }))

Discussion

Join us on Gitter if you are interested in contributing!

License

MIT