Update Passes Classes and Passes Objects

Keeping passes updated is an important way to engage with your customers and build a positive experience.

There are two resources that can be updated: The GenericClass and the GenericObject.

Best Practices

The following list contains helpful information to consider when updating your Generic pass classes and objects:

When you want to update an entire class or object, send an update request. When you want to update a small number of fields in a class or object, send a patch request.
When you make an update request, the entire object or class is updated. This means that any fields not included in the request will be cleared. Before sending an update request, we recommend you send a GET request to ensure you are working with the latest version and all of the intended fields are included in your request.
When making a patch request, only the patched fields are updated. Before sending a patch request, consider optionally sending a GET request to compare your changes against the latest version.
When making patch requests to update arrays, the original array is replaced with the one included in the request body. You cannot modify the elements in an array individually.
In some cases, you may not know when changes happen, or when to trigger updates. Consider periodically scheduling update or patch requests for all classes and objects.

Update a Passes Class

Use the Google Wallet Business Console

Pass classes (not objects) can be modified directly in the Google Pay & Wallet Console.

Navigate to the console
Select Google Wallet API
Select the class you want to modify
Select Edit
Update the class properties
Select Save

Once you save your changes, the class is updated automatically for any generic holders.

Use the Google Wallet API

Updating the GenericClass affects all users who have been provisioned Generic passes using this class. For example, to update the logo for your Generic passes, you would submit an update or patch request to the Google Wallet API at either of the following endpoints. The resourceId value would be the class ID (ISSUER_ID.CLASS_SUFFIX).

# Update
PUT https://walletobjects.googleapis.com/walletobjects/v1/genericclass/{resourceId}

# Patch
PATCH https://walletobjects.googleapis.com/walletobjects/v1/genericclass/{resourceId}

For more information, see the API reference.

Java

To start your integration in Java, refer to our complete code samples on GitHub.

/**
 * Update a class.
 *
 * <p><strong>Warning:</strong> This replaces all existing class attributes!
 *
 * @param issuerId The issuer ID being used for this request.
 * @param classSuffix Developer-defined unique ID for this pass class.
 * @return The pass class ID: "{issuerId}.{classSuffix}"
 */
public String updateClass(String issuerId, String classSuffix) throws IOException {
  GenericClass updatedClass;

  // Check if the class exists
  try {
    updatedClass =
        service.genericclass().get(String.format("%s.%s", issuerId, classSuffix)).execute();
  } catch (GoogleJsonResponseException ex) {
    if (ex.getStatusCode() == 404) {
      // Class does not exist
      System.out.printf("Class %s.%s not found!%n", issuerId, classSuffix);
      return String.format("%s.%s", issuerId, classSuffix);
    } else {
      // Something else went wrong...
      ex.printStackTrace();
      return String.format("%s.%s", issuerId, classSuffix);
    }
  }

  // Class exists
  // Update the class by adding a link
  Uri newLink =
      new Uri()
          .setUri("https://developers.google.com/wallet")
          .setDescription("New link description");

  if (updatedClass.getLinksModuleData() == null) {
    // LinksModuleData was not set on the original object
    updatedClass.setLinksModuleData(new LinksModuleData().setUris(new ArrayList<Uri>()));
  }
  updatedClass.getLinksModuleData().getUris().add(newLink);

  GenericClass response =
      service
          .genericclass()
          .update(String.format("%s.%s", issuerId, classSuffix), updatedClass)
          .execute();

  System.out.println("Class update response");
  System.out.println(response.toPrettyString());

  return response.getId();
}

PHP

To start your integration in PHP, refer to our complete code samples on GitHub.

/**
 * Update a class.
 *
 * **Warning:** This replaces all existing class attributes!
 *
 * @param string $issuerId The issuer ID being used for this request.
 * @param string $classSuffix Developer-defined unique ID for this pass class.
 *
 * @return string The pass class ID: "{$issuerId}.{$classSuffix}"
 */
public function updateClass(string $issuerId, string $classSuffix)
{
  // Check if the class exists
  try {
    $updatedClass = $this->service->genericclass->get("{$issuerId}.{$classSuffix}");
  } catch (Google\Service\Exception $ex) {
    if (!empty($ex->getErrors()) && $ex->getErrors()[0]['reason'] == 'classNotFound') {
      // Class does not exist
      print("Class {$issuerId}.{$classSuffix} not found!");
      return "{$issuerId}.{$classSuffix}";
    } else {
      // Something else went wrong...
      print_r($ex);
      return "{$issuerId}.{$classSuffix}";
    }
  }

  // Update the class by adding a homepage
  $newLink = new Uri([
    'uri' => 'https://developers.google.com/wallet',
    'description' => 'Homepage description'
  ]);

  $linksModuleData = $updatedClass->getLinksModuleData();
  if (is_null($linksModuleData)) {
    // LinksModuleData was not set on the original object
    $linksModuleData = new LinksModuleData([
      'uris' => []
    ]);
  }
  $uris = $linksModuleData->getUris();
  array_push(
    $uris,
    $newLink
  );
  $linksModuleData->setUris($uris);

  $updatedClass->setLinksModuleData($linksModuleData);

  $response = $this->service->genericclass->update("{$issuerId}.{$classSuffix}", $updatedClass);

  print "Class update response\n";
  print_r($response);

  return $response->id;
}

Python

To start your integration in Python, refer to our complete code samples on GitHub.

def update_class(self, issuer_id: str, class_suffix: str) -> str:
    """Update a class.

    **Warning:** This replaces all existing class attributes!

    Args:
        issuer_id (str): The issuer ID being used for this request.
        class_suffix (str): Developer-defined unique ID for this pass class.

    Returns:
        The pass class ID: f"{issuer_id}.{class_suffix}"
    """

    # Check if the class exists
    try:
        response = self.client.genericclass().get(resourceId=f'{issuer_id}.{class_suffix}').execute()
    except HttpError as e:
        if e.status_code == 404:
            print(f'Class {issuer_id}.{class_suffix} not found!')
            return f'{issuer_id}.{class_suffix}'
        else:
            # Something else went wrong...
            print(e.error_details)
            return f'{issuer_id}.{class_suffix}'

    # Class exists
    updated_class = response

    # Update the class by adding a link
    new_link = {
        'uri': 'https://developers.google.com/wallet',
        'description': 'Homepage description'
    }
    if not updated_class.get('linksModuleData'):
        updated_class['linksModuleData'] = {'uris': []}
    updated_class['linksModuleData']['uris'].append(new_link)

    # Note: reviewStatus must be 'UNDER_REVIEW' or 'DRAFT' for updates
    updated_class['reviewStatus'] = 'UNDER_REVIEW'

    response = self.client.genericclass().update(
        resourceId=f'{issuer_id}.{class_suffix}',
        body=updated_class).execute()

    print('Class update response')
    print(response)

    return f'{issuer_id}.{class_suffix}'

C#

To start your integration in C#, refer to our complete code samples on GitHub.

/// <summary>
/// Update a class.
/// <para />
/// <strong>Warning:</strong> This replaces all existing class attributes!
/// </summary>
/// <param name="issuerId">The issuer ID being used for this request.</param>
/// <param name="classSuffix">Developer-defined unique ID for this pass class.</param>
/// <returns>The pass class ID: "{issuerId}.{classSuffix}"</returns>
public string UpdateClass(string issuerId, string classSuffix)
{
  // Check if the class exists
  Stream responseStream = service.Genericclass
      .Get($"{issuerId}.{classSuffix}")
      .ExecuteAsStream();

  StreamReader responseReader = new StreamReader(responseStream);
  JObject jsonResponse = JObject.Parse(responseReader.ReadToEnd());

  if (jsonResponse.ContainsKey("error"))
  {
    if (jsonResponse["error"].Value<int>("code") == 404)
    {
      // Class does not exist
      Console.WriteLine($"Class {issuerId}.{classSuffix} not found!");
      return $"{issuerId}.{classSuffix}";
    }
    else
    {
      // Something else went wrong...
      Console.WriteLine(jsonResponse.ToString());
      return $"{issuerId}.{classSuffix}";
    }
  }

  // Class exists
  GenericClass updatedClass = JsonConvert.DeserializeObject<GenericClass>(jsonResponse.ToString());

  // Update the class by adding a link
  Google.Apis.Walletobjects.v1.Data.Uri newLink = new Google.Apis.Walletobjects.v1.Data.Uri
  {
    UriValue = "https://developers.google.com/wallet",
    Description = "New link description"
  };

  if (updatedClass.LinksModuleData == null)
  {
    // LinksModuleData was not set on the original object
    updatedClass.LinksModuleData = new LinksModuleData
    {
      Uris = new List<Google.Apis.Walletobjects.v1.Data.Uri>
      {
        newLink
      }
    };
  }
  else
  {
    // LinksModuleData was set on the original object
    updatedClass.LinksModuleData.Uris.Add(newLink);
  }

  responseStream = service.Genericclass
      .Update(updatedClass, $"{issuerId}.{classSuffix}")
      .ExecuteAsStream();

  responseReader = new StreamReader(responseStream);
  jsonResponse = JObject.Parse(responseReader.ReadToEnd());

  Console.WriteLine("Class update response");
  Console.WriteLine(jsonResponse.ToString());

  return $"{issuerId}.{classSuffix}";
}

Node.js

To start your integration in Node, refer to our complete code samples on GitHub.

/**
 * Update a class.
 *
 * **Warning:** This replaces all existing class attributes!
 *
 * @param {string} issuerId The issuer ID being used for this request.
 * @param {string} classSuffix Developer-defined unique ID for this pass class.
 *
 * @returns {string} The pass class ID: `${issuerId}.${classSuffix}`
 */
async updateClass(issuerId, classSuffix) {
  let response;

  // Check if the class exists
  try {
    response = await this.client.genericclass.get({
      resourceId: `${issuerId}.${classSuffix}`
    });
  } catch (err) {
    if (err.response && err.response.status === 404) {
      console.log(`Class ${issuerId}.${classSuffix} not found!`);
      return `${issuerId}.${classSuffix}`;
    } else {
      // Something else went wrong...
      console.log(err);
      return `${issuerId}.${classSuffix}`;
    }
  }

  // Class exists
  let updatedClass = response.data;

  // Update the class by adding a link
  let newLink = {
    'uri': 'https://developers.google.com/wallet',
    'description': 'New link description'
  }
  if (updatedClass['linksModuleData'] === undefined) {
    updatedClass['linksModuleData'] = {
      'uris': []
    };
  }
  updatedClass['linksModuleData']['uris'].push(newLink);

  response = await this.client.genericclass.update({
    resourceId: `${issuerId}.${classSuffix}`,
    requestBody: updatedClass
  });

  console.log('Class update response');
  console.log(response);

  return `${issuerId}.${classSuffix}`;
}

Update a Passes Object

Updating an individual GenericObject affects only the user who has been provisioned that specific object. You should regularly update individual Generic passes to reflect changes that affect your customers and keep them engaged. The resourceId value would be the object ID (ISSUER_ID.OBJECT_SUFFIX).

# Update
PUT https://walletobjects.googleapis.com/walletobjects/v1/genericobject/{resourceId}

# Patch
PATCH https://walletobjects.googleapis.com/walletobjects/v1/genericobject/{resourceId}