![MIT-License]()

React Places Autocomplete

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

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Live demo: hibiken.github.io/react-autocomplete-places/

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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. Full control over rendering to integrate well with other libraries (e.g. Redux-Form)
4. Mobile friendly UX
5. WAI-ARIA compliant
6. Support Asynchronous Google script loading

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To install the stable version

``sh
npm install --save react-autocomplete-places
`

React component is exported as a default export

`js
import PlacesAutocomplete from 'react-autocomplete-places';
`

utility functions are named exports

`js
import {
geocodeByAddress,
geocodeByPlaceId,
getLatLng,
} from 'react-autocomplete-places';
`

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

Load the library in your project

`html

`

Create your component

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

class LocationSearchInput extends React.Component {
constructor(props) {
super(props);
this.state = { address: '' };
}

handleChange = address => {
this.setState({ address });
};

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

render() {
return (
value={this.state.address}
onChange={this.handleChange}
onSelect={this.handleSelect}
>
{({ getInputProps, suggestions, getSuggestionItemProps, loading }) => (

{...getInputProps({
placeholder: 'Search Places ...',
className: 'location-search-input',
})}
/>

{loading &&

Loading...

}
{suggestions.map(suggestion => {
const className = suggestion.active
? 'suggestion-item--active'
: 'suggestion-item';
// inline style for demonstration purpose
const style = suggestion.active
? { backgroundColor: '#fafafa', cursor: 'pointer' }
: { backgroundColor: '#ffffff', cursor: 'pointer' };
return (

{...getSuggestionItemProps(suggestion, {
className,
style,
})}
>
{suggestion.description}

);
})}

)}

);
}
}
`

Props

PlacesAutocomplete is a Controlled Component with a Render Prop. Therefore, you MUST pass at least value and onChange callback to the input element, and render function via children.

| Prop | Type | Required | Description |
| ------------------------------------------------------- | :------: | :----------------: | ------------------------------------------------------------------------------------------------ |
| value | string | :white_check_mark: | value for the input element |
| onChange | function | :white_check_mark: | onChange function for the input element |
| children | function | :white_check_mark: | Render function to specify the rendering |
| onSelect | function | | Event handler to handle user's select event |
| onError | function | | Error handler function that gets called when Google Maps API responds with an error |
| searchOptions | 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 | boolean | | Component will hit Google Maps API only if this flag is set true |
| googleCallbackName | string | | You can provide a callback name to initialize PlacesAutocomplete after google script is loaded |

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Type: string,
Required: true

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Type: function,
Required: true

Typically this event handler will update value state.

`js
value={this.state.value}
onChange={value => this.setState({ value })}
>
{/ custom render function /}

`

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Type: function
Required: true

This is where you render whatever you want to based on the state of PlacesAutocomplete.
The function will take an object with the following keys.

* getInputProps : function
* getSuggestionItemProps : function
* loading : boolean
* suggestions : array

Simple example

`js
const renderFunc = ({ getInputProps, getSuggestionItemProps, suggestions }) => (

{loading &&

Loading...

}
{suggestions.map(suggestion => (

{suggestion.description}

))}

);

// In render function

{renderFunc}
;
`

#### getInputProps

This function will return the props that you can spread over the element.
You can optionally call the function with an object to pass other props to the input.

`js
// In render function

`

#### getSuggestionItemProps

This function will return the props that you can spread over each suggestion item in your
autocomplete dropdown. You MUST call it with suggestion object as an argument, and optionally pass an object to pass other props to the element.

`js
// Simple example

{suggestions.map(suggestion => (

{suggestion.description}

))}

// Pass options as a second argument

{suggestions.map(suggestion => {
const className = suggestion.active ? 'suggestion-item--active' : 'suggestion-item';
return (

{suggestion.description}

);
})}

`

#### loading

This is a boolean flag indicating whether or not the request is pending, or has completed.

#### suggestions

This is an array of suggestion objects each containing all the data from Google Maps API and other metadata.

An example of a suggestion object.

`js
{
active: false,
description: "San Francisco, CA, USA",
formattedSuggestion: { mainText: "San Francisco", secondaryText: "CA, USA" },
id: "1b9ea3c094d3ac23c9a3afa8cd4d8a41f05de50a",
index: 0,
matchedSubstrings: [ {length: 8, offset: 0} ],
placeId: "ChIJIQBpAG2ahYAR_6128GcTUEo",
terms: [
{ offset: 0, value: "San Francisco" },
{ offset: 15, value: "CA" },
{ offset: 19, value: "USA" }
],
types: ["locality", "political", "geocode"]
}
`

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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 a suggestion item.

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

`js
// NOTE: placeId is null when user hits Enter key with no suggestion item selected.
const handleSelect = (address: string, placeId: ?string) => {
// Do something with address and placeId
}

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

`

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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

`js
// 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()
}

value={this.state.value}
onChange={this.handleChange}
onError={onError}
>
{/ Custom render function /}

`

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Type: Object
Required: false
Default: {}

You can fine-tune the settings passed to the AutocompleteService class with searchOptions 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).

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

value={this.state.value}
onChange={this.handleChange}
searchOptions={searchOptions}
>
{/ Custom render function /}

`

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Type: number
Required: false
Default: 200

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

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Type: boolean
Required: false
Default: false

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

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Type: boolean
Required: false
Default: true

`js
// Only fetch suggestions when the input text is longer than 3 characters.
value={this.state.address}
onChange={this.handleChange}
shouldFetchSuggestions={this.state.address.length > 3}
>
{/ custom render function /}

`

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Type: string
Required: false
Default: undefined

If provided, component will initialize after the browser has finished downloading google script.

IMPORTANT: To enable this async mode, you need to provide the same callback name to google script via callback=[YOUR CALLBACK NAME].

Example:

`html

`

Then, provide googleCallbackName prop to PlacesAutocomplete.

`js
value={this.state.value}
onChange={this.handleChange}
googleCallbackName="myCallbackFunc"
>
{/ custom render function /}

`

NOTE: If there are more than one PlacesAutocomplete components rendered in the page,
set up a callback function that calls a callback function for each component.

Example:

`html


`

`js
value={this.state.value}
onChange={this.handleChange}
googleCallbackName="initOne"
>
{/ custom render function /}


value={this.state.value}
onChange={this.handleChange}
googleCallbackName="initTwo"
>
{/ custom render function /}

`

Utility Functions

* geocodeByAddress
* geocodeByPlaceId
* getLatLng

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

#### address

Type: String,
Required: true

String that gets passed to Google Maps Geocoder

`js
import { geocodeByAddress } from 'react-autocomplete-places';

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

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

#### placeId

Type: String,
Required: true

String that gets passed to Google Maps Geocoder

`js
import { geocodeByPlaceId } from 'react-autocomplete-places';

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

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`js
/**
* 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)

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

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

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Join us on Gitter if you are interested in contributing!

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MIT