通过条件将Firebase Cloud Messaging(FCM)发送到多个主题的正确语法是什么 [英] What is the correct syntax to send Firebase Cloud Messaging (FCM) to multiple topics via condition

问题描述

我只是想使用Google Cloud Functions将通知发送到订阅了主题组合的设备.

Simply I want to use the Google Cloud Functions to send notifications to devices that subscribe to a combination of topics.

文档说:

主题&&中的"TopicA"(主题中的"TopicB" |主题中的"TopicC")"

"'TopicA' in topics && ('TopicB' in topics || 'TopicC' in topics)"

我试图做的是:

var topicsConditions = `'${type}' in topics && ('${area}' in topics || '${city}' in topics)`;

// Send a message to devices subscribed to the provided topic.
admin.messaging().sendToCondition(topicsConditions, notificationPayload)
  .then(function(response) {
    // See the MessagingTopicResponse reference documentation for the
    // contents of response.
    console.log("Successfully sent message:", response);
  })
  .catch(function(error) {
    console.log("Error sending message:", error);
  });

但我一直收到此错误:

发送消息时出错:{错误:提供了无效的参数.原始服务器响应:无效的"条件"字段:仅支持主题"条件 .状态码:400. 在FirebaseMessagingError.Error(本机) 在FirebaseMessagingError.FirebaseError [作为构造函数](/user_code/node_modules/firebase-admin/lib/utils/error.js:39:28) 在FirebaseMessagingError.PrefixedFirebaseError [作为构造函数](/user_code/node_modules/firebase-admin/lib/utils/error.js:85:28) 在新的FirebaseMessagingError(/user_code/node_modules/firebase-admin/lib/utils/error.js:241:16) 在/user_code/node_modules/firebase-admin/lib/messaging/messaging-api-request.js:115:23 在process._tickDomainCallback(内部/进程/next_tick.js:135:7) errorInfo: {代码:消息/无效参数"， 消息:提供了无效的参数.原始服务器响应:无效的"条件"字段:仅支持\'topics \'条件\ n.状态码:400. }， codePrefix:'messaging'}

Error sending message: { Error: Invalid argument provided. Raw server response: "Invalid "condition" field: only support 'topics' conditions ". Status code: 400. at FirebaseMessagingError.Error (native) at FirebaseMessagingError.FirebaseError [as constructor] (/user_code/node_modules/firebase-admin/lib/utils/error.js:39:28) at FirebaseMessagingError.PrefixedFirebaseError [as constructor] (/user_code/node_modules/firebase-admin/lib/utils/error.js:85:28) at new FirebaseMessagingError (/user_code/node_modules/firebase-admin/lib/utils/error.js:241:16) at /user_code/node_modules/firebase-admin/lib/messaging/messaging-api-request.js:115:23 at process._tickDomainCallback (internal/process/next_tick.js:135:7) errorInfo: { code: 'messaging/invalid-argument', message: 'Invalid argument provided. Raw server response: "Invalid "condition" field: only support \'topics\' conditions\n". Status code: 400.' }, codePrefix: 'messaging' }

任何人都可以指导我使用正确的语法吗?

Anyone can direct me to the correct syntax?

主题的日志输出为:

主题&&中的主题条件="MyType +" (主题为埃及吉萨" |主题为"|القاهرةالكبرى")

Topic conditions = 'MyType+' in topics && ('Giza, Egypt ' in topics || 'القاهرة الكبرى' in topics)

推荐答案

主题名称中可能使用的字符限于:

The characters that may be used in a topic name are limited to:

• 小写字母a至z
• 大写字母A至Z
• 位数0至9
• 字符- _ . ~ %

• lowercase letters a to z
• uppercase letters A to Z
• digits 0 to 9
• characters - _ . ~ %

您的主题名称包含无效字符+，,，空格和阿拉伯语.

Your topic names contain invalid characters +, ,, space, and Arabic.

更多详细信息位于文档:

Further details are in the documentation:

开发人员可以选择与常规名称匹配的任何主题名称 表达式:"[a-zA-Z0-9 -_.〜％] +"

Developers can choose any topic name that matches the regular expression: "[a-zA-Z0-9-_.~%]+"

有效条件字符串的示例是:

An example of a valid condition string is:

var topicsConditions = "'Aswan' in topics && ('Giza' in topics || 'Cairo' in topics)";

我在调用admin.messaging().sendToCondition()

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