Recensioni dei luoghi

Sviluppatori dello Spazio economico europeo (SEE)

Le recensioni dei luoghi ti consentono di accedere a milioni di recensioni e valutazioni di alta qualità dal database di Places e di visualizzarle nelle tue pagine web.

Visualizza il codice sorgente dell'esempio completo

Questo esempio recupera i dettagli del luogo, inclusa la prima recensione, e mostra le informazioni in una finestra informativa.

TypeScript

let innerMap;
let infoWindow;
const mapElement = document.querySelector('gmp-map') as google.maps.MapElement;

async function initMap() {
    // Import the needed libraries.
    const [{ InfoWindow }, { AdvancedMarkerElement }, { Place }] =
        await Promise.all([
            google.maps.importLibrary(
                'maps'
            ) as Promise<google.maps.MapsLibrary>,
            google.maps.importLibrary(
                'marker'
            ) as Promise<google.maps.MarkerLibrary>,
            google.maps.importLibrary(
                'places'
            ) as Promise<google.maps.PlacesLibrary>,
        ]);

    innerMap = mapElement.innerMap;

    // Create a new Place instance.
    const place = new Place({
        id: 'ChIJpyiwa4Zw44kRBQSGWKv4wgA', // Faneuil Hall Marketplace, Boston, MA
    });

    // Call fetchFields, passing 'reviews' and other needed fields.
    await place.fetchFields({
        fields: ['displayName', 'formattedAddress', 'location', 'reviews'],
    });

    // Create an HTML container.
    const content = document.createElement('div');
    const title = document.createElement('div');
    const rating = document.createElement('div');
    const address = document.createElement('div');
    const review = document.createElement('div');
    const authorLink = document.createElement('a');

    // If there are any reviews display the first one.
    if (place.reviews && place.reviews.length > 0) {
        // Get info for the first review.
        const reviewRating = place.reviews[0].rating;
        const reviewText = place.reviews[0].text;
        const authorName = place.reviews[0].authorAttribution!.displayName;
        const authorUri = place.reviews[0].authorAttribution!.uri;

        // Safely populate the HTML.
        title.textContent = place.displayName || '';
        address.textContent = place.formattedAddress || '';
        rating.textContent = `Rating: ${reviewRating} stars`;
        review.textContent = reviewText || '';
        authorLink.textContent = authorName;
        authorLink.href = authorUri || '';
        authorLink.target = '_blank';

        content.appendChild(title);
        content.appendChild(address);
        content.appendChild(rating);
        content.appendChild(review);
        content.appendChild(authorLink);
    } else {
        content.textContent =
            `No reviews were found for ${place.displayName}.`;
    }

    // Create an infowindow to display the review.
    infoWindow = new InfoWindow({
        content,
        ariaLabel: place.displayName,
    });

    // Add a marker.
    const marker = new AdvancedMarkerElement({
        map: innerMap,
        position: place.location,
        title: place.displayName,
    });

    innerMap.setCenter(place.location);

    // Show the info window.
    infoWindow.open({
        anchor: marker,
        map: innerMap,
    });
}

initMap();
index.ts

JavaScript

let innerMap;
let infoWindow;
const mapElement = document.querySelector('gmp-map');
async function initMap() {
    // Import the needed libraries.
    const [{ InfoWindow }, { AdvancedMarkerElement }, { Place }] = await Promise.all([
        google.maps.importLibrary('maps'),
        google.maps.importLibrary('marker'),
        google.maps.importLibrary('places'),
    ]);
    innerMap = mapElement.innerMap;
    // Create a new Place instance.
    const place = new Place({
        id: 'ChIJpyiwa4Zw44kRBQSGWKv4wgA', // Faneuil Hall Marketplace, Boston, MA
    });
    // Call fetchFields, passing 'reviews' and other needed fields.
    await place.fetchFields({
        fields: ['displayName', 'formattedAddress', 'location', 'reviews'],
    });
    // Create an HTML container.
    const content = document.createElement('div');
    const title = document.createElement('div');
    const rating = document.createElement('div');
    const address = document.createElement('div');
    const review = document.createElement('div');
    const authorLink = document.createElement('a');
    // If there are any reviews display the first one.
    if (place.reviews && place.reviews.length > 0) {
        // Get info for the first review.
        const reviewRating = place.reviews[0].rating;
        const reviewText = place.reviews[0].text;
        const authorName = place.reviews[0].authorAttribution.displayName;
        const authorUri = place.reviews[0].authorAttribution.uri;
        // Safely populate the HTML.
        title.textContent = place.displayName || '';
        address.textContent = place.formattedAddress || '';
        rating.textContent = `Rating: ${reviewRating} stars`;
        review.textContent = reviewText || '';
        authorLink.textContent = authorName;
        authorLink.href = authorUri || '';
        authorLink.target = '_blank';
        content.appendChild(title);
        content.appendChild(address);
        content.appendChild(rating);
        content.appendChild(review);
        content.appendChild(authorLink);
    }
    else {
        content.textContent =
            `No reviews were found for ${place.displayName}.`;
    }
    // Create an infowindow to display the review.
    infoWindow = new InfoWindow({
        content,
        ariaLabel: place.displayName,
    });
    // Add a marker.
    const marker = new AdvancedMarkerElement({
        map: innerMap,
        position: place.location,
        title: place.displayName,
    });
    innerMap.setCenter(place.location);
    // Show the info window.
    infoWindow.open({
        anchor: marker,
        map: innerMap,
    });
}
initMap();
index.js

CSS

/* 
 * Always set the map height explicitly to define the size of the div element
 * that contains the map. 
 */
gmp-map {
    height: 100%;
}

/* 
 * Optional: Makes the sample page fill the window. 
 */
html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
}

style.css

HTML

<html>
    <head>
        <title>Place Reviews</title>

        <link rel="stylesheet" type="text/css" href="./style.css" />
        <script type="module" src="./index.js"></script>
        <!-- prettier-ignore -->
        <script>(g=>{var h,a,k,p="The Google Maps JavaScript API",c="google",l="importLibrary",q="__ib__",m=document,b=window;b=b[c]||(b[c]={});var d=b.maps||(b.maps={}),r=new Set,e=new URLSearchParams,u=()=>h||(h=new Promise(async(f,n)=>{await (a=m.createElement("script"));e.set("libraries",[...r]+"");for(k in g)e.set(k.replace(/[A-Z]/g,t=>"_"+t[0].toLowerCase()),g[k]);e.set("callback",c+".maps."+q);a.src=`https://maps.${c}apis.com/maps/api/js?`+e;d[q]=f;a.onerror=()=>h=n(Error(p+" could not load."));a.nonce=m.querySelector("script[nonce]")?.nonce||"";m.head.append(a)}));d[l]?console.warn(p+" only loads once. Ignoring:",g):d[l]=(f,...n)=>r.add(f)&&u().then(()=>d[l](f,...n))})
        ({key: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8", v: "weekly"});</script>
    </head>
    <body>
        <gmp-map
            center="42.349134, -71.083184"
            zoom="14"
            map-id="4504f8b37365c3d0">
        </gmp-map>
    </body>
</html>
index.html

Prova campione

Visualizzare le recensioni di un luogo

Per ottenere i dati delle recensioni di un luogo, includi il campo reviews nei parametri della richiesta fetchFields(). L'istanza Place risultante contiene un array di oggetti Review, da cui puoi accedere alle informazioni necessarie per la recensione.

L'esempio seguente mostra come inviare una richiesta Place Details per le recensioni. 

// Create a new Place instance.
const place = new Place({
    id: 'ChIJpyiwa4Zw44kRBQSGWKv4wgA', // Faneuil Hall Marketplace, Boston, MA
});
// Call fetchFields, passing 'reviews' and other needed fields.
await place.fetchFields({
    fields: ['displayName', 'formattedAddress', 'location', 'reviews'],
});
// Create an HTML container.
const content = document.createElement('div');
const title = document.createElement('div');
const rating = document.createElement('div');
const address = document.createElement('div');
const review = document.createElement('div');
const authorLink = document.createElement('a');
// If there are any reviews display the first one.
if (place.reviews && place.reviews.length > 0) {
    // Get info for the first review.
    const reviewRating = place.reviews[0].rating;
    const reviewText = place.reviews[0].text;
    const authorName = place.reviews[0].authorAttribution.displayName;
    const authorUri = place.reviews[0].authorAttribution.uri;
    // Safely populate the HTML.
    title.textContent = place.displayName || '';
    address.textContent = place.formattedAddress || '';
    rating.textContent = `Rating: ${reviewRating} stars`;
    review.textContent = reviewText || '';
    authorLink.textContent = authorName;
    authorLink.href = authorUri || '';
    authorLink.target = '_blank';
    content.appendChild(title);
    content.appendChild(address);
    content.appendChild(rating);
    content.appendChild(review);
    content.appendChild(authorLink);
}
else {
    content.textContent =
        `No reviews were found for ${place.displayName}.`;
}
// Create an infowindow to display the review.
infoWindow = new InfoWindow({
    content,
    ariaLabel: place.displayName,
});
index.js

L'istanza Review contiene:

  • AuthorAttribution
  • Il rating fornito dall'utente.
  • publishTime (data) e relativePublishTimeDescription (ora della recensione rispetto all'ora attuale, ad esempio "un mese fa").
  • La recensione text.
  • Il textLanguageCode che indica la lingua in cui è scritta la recensione.

Per ottenere la valutazione complessiva del luogo, utilizza la proprietà Place.rating (devi richiedere il campo rating nei parametri di richiesta fetchFields()).

Attribuzioni degli autori

Quando mostri una recensione, devi mostrare anche le attribuzioni dell'autore. Utilizza la classe AuthorAttribution per restituire le attribuzioni. Un'attribuzione include il nome dell'autore (displayName), un URI per il suo profilo Google Maps (uri) e un URI per la foto dell'autore (photoURI). Il seguente snippet mostra la restituzione di displayName, uri e photoURI per un'attribuzione. 

  let authorName = place.reviews[0].authorAttribution!.displayName;
  let authorUri = place.reviews[0].authorAttribution!.uri;
  let authorPhoto = place.reviews[0].authorAttribution!.photoURI;