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After a Topic Is Created/

After a Topic Is Created

Feature Overview

This callback allows you to view the information of the topic created by the user on the application backend in real time. Specifically, it notifies the application backend of the successful topic creation so that the backend can sync data.

Notes

To enable this callback, you must configure the URL. This callback and the callback after group creation use the same switch. For detailed directions, see Webhook Configuration.
During this callback, the IM backend initiates an HTTP POST request to the app backend.
After receiving the callback request, the app backend must check whether the SDKAppID contained in the request URL is the SDKAppID of the app.
For more security considerations, see the Security Considerations section in Third-Party Callback Overview.
You need to enable the topic feature in the console before using it.

Callback Triggering Scenarios

The application user created a topic successfully on the client.
The application admin created a topic successfully through the RESTful API.

Callback Triggering Timing

It will be triggered after a topic is created successfully.

API Calling Description

Sample request URL

In the following sample, the callback URL configured in the app is https://www.example.com. Example:
https://www.example.com?SdkAppid=$SDKAppID&CallbackCommand=$CallbackCommand&contenttype=json&ClientIP=$ClientIP&OptPlatform=$OptPlatform

Request parameters

Parameter
Description
https
The request protocol is HTTPS, and the request method is POST.
www.example.com
Callback URL
SdkAppid
The SDKAppID assigned by the IM console when the app is created
CallbackCommand
Fixed value: Group.CallbackAfterCreateTopic.
contenttype
Fixed value: JSON.
ClientIP
Client IP, such as 127.0.0.1
OptPlatform
Client platform. For valid values, see the description of OptPlatform in the Callback Protocols section of Third-Party Callback Overview.

Sample request

 {
    "CallbackCommand": "Group.CallbackAfterCreateTopic", // Callback command
    "GroupId" : "@TGS#2J4SZEAEL",
    "TopicId"	: "@TGS#_@TGS#cQVLVHIM62CJ@TOPIC#_@TOPIC#cRTE3HIM62C5",
    "Operator_Account": "group_root", // Operator
    "Owner_Account": "leckie", // Group owner
    "Type": "Community", // Group type
    "Name": "MyFirstTopic", // Topic name
    "UserDefinedDataList": [ // Custom field to be used when the user creates a topic
        {
            "Key": "UserDefined1",
            "Value": "hello"
        },
        {
            "Key": "UserDefined2",
            "Value": "world"
        }
    ]
}

Request fields

Field
Type
Description
CallbackCommand
String
Callback command
GroupId
String
Group ID of the topic
TopicId
string
Topic ID
Operator_Account
String
UserID of the operator who initiates the topic creation request
Owner_Account
String
UserID of the group owner
Type
String
Group type of the topic. Here, it is Community.
Name
String
Name of the topic requested to be created
UserDefinedDataList
Array
Custom field to be used when the user creates a topic. This field is unavailable by default and needs to be enabled as instructed in Group System.

Sample response

A response is sent after the app backend synchronizes the data.
{
    "ActionStatus": "OK",
    "ErrorInfo": "",
    "ErrorCode": 0 //The value `0` indicates that the callback result is ignored.
}

Response fields

Field
Type
Required
Description
ActionStatus
String
Yes
Request result. OK: Successful; FAIL: Failed
ErrorCode
Integer
Yes
Error code. The value 0 indicates that the callback result is ignored.
ErrorInfo
String
Yes
Error information

References

Third-Party Callback Overview
RESTful API: Creating Topic