PHP应用添加Google Wallet通用卡时TextModuleData不显示求助

我在PHP网站上集成Google Wallet通用卡，功能基本实现，但TextModuleData内容无法显示在卡片上。基于官方PHP通用卡示例修改后，卡片的名称、Logo等内容均可正常展示，唯独文本模块缺失。

核心代码 #

调用代码 #

$googlepass = new GooglePass();
$googlepass->createJWTNewObjects('issuer_id', 'my_class_suffix', $randomString);

GooglePass类核心方法 #

class GooglePass {

// 授权相关代码

public function createJwtNewObjects(string $issuerId, string $classSuffix, string $objectSuffix, $user)
{
    // 更多属性说明见官方文档
    $newObject = new Google_Service_Walletobjects_GenericObject([
        'id' => "{$issuerId}.{$objectSuffix}",
        'classId' => "{$issuerId}.{$classSuffix}",
        'state' => 'ACTIVE',
        
        'header' => new Google_Service_Walletobjects_LocalizedString([
            'defaultValue' => new Google_Service_Walletobjects_TranslatedString([
                'language' => 'en-US',
                'value' => $user->name,
            ])
        ]),
        'textModulesData' => [
            new Google_Service_Walletobjects_TextModuleData([
                'header' => 'Location',
                'body' => $user->location,
                'id' => 'location'
            ]),
            new Google_Service_Walletobjects_TextModuleData([
                'header' => 'Other Details',
                'body' => $user->detail,
                'id' => 'otherDetails'
            ])
        ]
    ]);

    // 使用服务账号凭据签署JWT
    $serviceAccount = json_decode(file_get_contents($this->keyFilePath), true);

    // 创建JWT键值对数组
    $claims = [
        'iss' => $serviceAccount['client_email'],
        'aud' => 'google',
        'origins' => ['www.mysite.com'],
        'typ' => 'savetowallet',
        'payload' => [
            'genericObjects' => [
                $newObject
            ]
        ]
    ];

    $token = JWT::encode(
        $claims,
        $serviceAccount['private_key'],
        'RS256'
    );

    print "Add to Google Wallet link\n";
    print "https://pay.google.com/gp/v/save/{$token}";

    return "https://pay.google.com/gp/v/save/{$token}";
}
}

疑问与尝试 #

我猜测问题出在需要创建或更新GenericClass，但不确定针对500+用户，是否需要为每个用户分别创建类和对象，还是可以复用同一个类。

尝试添加以下GenericClass代码后，创建卡片时出现**"Something went wrong. Please try again."**错误：

$newClass = new Google_Service_Walletobjects_GenericClass([
    'id' => "{$issuerId}.{$classSuffix}",
    'classTemplateInfo' => [
        'cardTemplateOverride' => [
            'cardRowTemplateInfos' => [
                [
                    'twoItems' => [
                        'startItem' => [
                            'firstValue' => [
                                'fields' => [
                                    [
                                        'fieldPath' => "object.textModulesData['points']",
                                    ],
                                ],
                            ],
                        ],
                        'endItem' => [
                            'firstValue' => [
                                'fields' => [
                                    [
                                        'fieldPath' => "object.textModulesData['contacts']",
                                    ],
                                ],
                            ],
                        ],
                    ],
                ],
            ],
        ],
    ],
]);

相关文档说明不够清晰，希望得到正确的解决方向。

内容的提问来源于stack exchange，提问作者supazu