Avaliações de lugares

Desenvolvedores do Espaço Econômico Europeu (EEE)

Com as avaliações de lugares, você tem acesso a milhões de avaliações e classificações de alta qualidade do banco de dados do Google Maps e pode mostrá-las nas suas páginas da Web.

Confira o código-fonte de exemplo completo

Este exemplo recupera detalhes do lugar, incluindo a primeira avaliação, e mostra as informações em uma janela de informações.

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

Testar amostra

Receber avaliações de um lugar

Para receber dados de avaliações de um lugar, inclua o campo reviews nos parâmetros da solicitação fetchFields(). A instância de lugar resultante contém uma matriz de objetos Review, em que é possível acessar as informações de avaliação necessárias.

O exemplo a seguir mostra como fazer uma solicitação de Place Details para avaliações. 

// 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

A instância Review contém o seguinte:

  • Um AuthorAttribution
  • O rating fornecido pelo usuário.
  • O publishTime (data) e o relativePublishTimeDescription (horário da avaliação em relação ao horário atual, por exemplo, "há um mês").
  • A avaliação text.
  • O textLanguageCode que indica o idioma em que a avaliação foi escrita.

Para receber a classificação geral do lugar, use a propriedade Place.rating. É necessário solicitar o campo rating nos parâmetros de solicitação fetchFields().

Atribuições de autor

Ao mostrar uma avaliação, você também precisa exibir as atribuições do autor. Use a classe AuthorAttribution para retornar atribuições. Uma atribuição inclui o nome do autor (displayName), um URI para o perfil do Google Maps dele (uri) e um URI para a foto do autor (photoURI). O snippet a seguir mostra como retornar displayName, uri e photoURI para uma atribuição. 

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