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Add prop to specify whether the directions API should return multiple routes, and if so allow for specification of which route to render. #188

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Add prop to specify whether the directions API should return multiple routes, and if so allow for specification of which route to render. #188

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252305f
add option for requesting multiple routes and choosing route preference
Apr 29, 2022
c96c33d
update to latest changes
Apr 29, 2022
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12 changes: 8 additions & 4 deletions src/MapViewDirections.js
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Original file line number Diff line number Diff line change
Expand Up @@ -92,6 +92,7 @@ class MapViewDirections extends Component {
precision = 'low',
timePrecision = 'none',
channel,
preferredRoute
} = props;

if (!apikey) {
Expand Down Expand Up @@ -174,7 +175,7 @@ class MapViewDirections extends Component {
}

return (
this.fetchRoute(directionsServiceBaseUrl, origin, waypoints, destination, apikey, mode, language, region, precision, timePrecisionString, channel)
this.fetchRoute(directionsServiceBaseUrl, origin, waypoints, destination, apikey, mode, language, region, precision, timePrecisionString, channel, preferredRoute)
.then(result => {
return result;
})
Expand Down Expand Up @@ -227,7 +228,7 @@ class MapViewDirections extends Component {
});
}

fetchRoute(directionsServiceBaseUrl, origin, waypoints, destination, apikey, mode, language, region, precision, timePrecision, channel) {
fetchRoute(directionsServiceBaseUrl, origin, waypoints, destination, apikey, mode, language, region, precision, timePrecision, channel, preferredRoute) {

// Define the URL to call. Only add default parameters to the URL if it's a string.
let url = directionsServiceBaseUrl;
Expand All @@ -239,6 +240,9 @@ class MapViewDirections extends Component {
if(channel){
url+=`&channel=${channel}`;
}
if (preferredRoute) {
url += `&alternatives=${true}`
}
}

return fetch(url)
Expand All @@ -252,7 +256,7 @@ class MapViewDirections extends Component {

if (json.routes.length) {

const route = json.routes[0];
const route = preferredRoute && preferredRoute < json.routes.length ? json.routes[preferredRoute] : json.routes[0];

return Promise.resolve({
distance: route.legs.reduce((carry, curr) => {
Expand Down Expand Up @@ -354,4 +358,4 @@ MapViewDirections.propTypes = {
channel: PropTypes.string,
};

export default MapViewDirections;
export default MapViewDirections;