Recensioni dei luoghi

Visualizza il codice sorgente completo dell'esempio

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

TypeScript

let map: google.maps.Map;
let centerCoordinates = { lat: 42.349134, lng: -71.083184 }; // Boston, MA
let infoWindow;
let contentString;

async function initMap() {
    const { Map, InfoWindow } = await google.maps.importLibrary('maps') as google.maps.MapsLibrary;
    const { AdvancedMarkerElement } = await google.maps.importLibrary('marker') as google.maps.MarkerLibrary;
    const { Place, Review } = await google.maps.importLibrary('places') as google.maps.PlacesLibrary;

    map = new Map(document.getElementById('map') as HTMLElement, {
        center: centerCoordinates,
        zoom: 14,
        // ...
    });

    // Use a place ID to 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'],
    });

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

        // Format the review using HTML.
        contentString =`
            <div id="title"><b>${place.displayName}</b></div>
            <div id="address">${place.formattedAddress}</div>
            <a href="${authorUri}" target="_blank">Author: ${authorName}</a>
            <div id="rating">Rating: ${reviewRating} stars</div>
            <div id="rating"><p>Review: ${reviewText}</p></div>`;
    } else {
        contentString = 'No reviews were found for ' + place.displayName + '.';
    }

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

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

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

initMap();
index.ts

JavaScript

let map;
let centerCoordinates = { lat: 42.349134, lng: -71.083184 }; // Boston, MA
let infoWindow;
let contentString;

async function initMap() {
  const { Map, InfoWindow } = await google.maps.importLibrary("maps");
  const { AdvancedMarkerElement } = await google.maps.importLibrary("marker");
  const { Place, Review } = await google.maps.importLibrary("places");

  map = new Map(document.getElementById("map"), {
    center: centerCoordinates,
    zoom: 14,
    // ...
  });

  // Use a place ID to 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"],
  });
  // If there are any reviews display the first one.
  if (place.reviews && place.reviews.length > 0) {
    // Get info for the first review.
    let reviewRating = place.reviews[0].rating;
    let reviewText = place.reviews[0].text;
    let authorName = place.reviews[0].authorAttribution.displayName;
    let authorUri = place.reviews[0].authorAttribution.uri;

    // Format the review using HTML.
    contentString = `
            <div id="title"><b>${place.displayName}</b></div>
            <div id="address">${place.formattedAddress}</div>
            <a href="${authorUri}" target="_blank">Author: ${authorName}</a>
            <div id="rating">Rating: ${reviewRating} stars</div>
            <div id="rating"><p>Review: ${reviewText}</p></div>`;
  } else {
    contentString = "No reviews were found for " + place.displayName + ".";
  }

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

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

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

initMap();
index.js

CSS

/* 
 * Always set the map height explicitly to define the size of the div element
 * that contains the map. 
 */
#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>
  </head>
  <body>
    <div id="map"></div>

    <!-- 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: "AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg", v: "weekly"});</script>
  </body>
</html>
index.html

Prova Sample

Visualizzare le recensioni di un luogo

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

L'esempio seguente mostra come effettuare una richiesta di dettagli del luogo per le recensioni. 

// Use a place ID to 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"],
});
// If there are any reviews display the first one.
if (place.reviews && place.reviews.length > 0) {
  // Get info for the first review.
  let reviewRating = place.reviews[0].rating;
  let reviewText = place.reviews[0].text;
  let authorName = place.reviews[0].authorAttribution.displayName;
  let authorUri = place.reviews[0].authorAttribution.uri;

  // Format the review using HTML.
  contentString = `
          <div id="title"><b>${place.displayName}</b></div>
          <div id="address">${place.formattedAddress}</div>
          <a href="${authorUri}" target="_blank">Author: ${authorName}</a>
          <div id="rating">Rating: ${reviewRating} stars</div>
          <div id="rating"><p>Review: ${reviewText}</p></div>`;
} else {
  contentString = "No reviews were found for " + place.displayName + ".";
}

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

index.js

L'istanza Review contiene:

  • Un AuthorAttribution
  • Il rating fornito dall'utente.
  • publishTime (Data) e relativePublishTimeDescription (ora della revisione rispetto all'ora corrente, 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 dell'autore

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 di Google Maps (uri) e un URI per la sua foto (photoURI). Lo snippet seguente mostra il ritorno 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;