Adding a Trigger for an Object Instance

Function

This API is used to add a trigger for an object instance.

URI

POST Huawei Cloud Astro Zero domain name/u-route/baas/metadata/v1.0/Object/{object_id}/Trigger

**Table 1** URI parameter
Parameter	Mandatory	Type	Description
object_id	Yes	String	Explanation Object instance ID, which can be queried by calling the API of Querying All Custom Objects (id in the response message). Constraints None Value None Default value None

Request Parameters

**Table 2** Request parameters
Parameter	Mandatory	Type	Description
name	Yes	String	Explanation Name of the trigger to be added. Constraints None Value Start with a letter and can contain only letters, digits, and single underscores (_). The value cannot use consecutive underscore (_) and cannot end with an underscore. A maximum of 64 characters are allowed. Default value None
label	No	String	Explanation Label of the trigger to be added. Constraints None Value 1–64 characters Default value None
description	No	String	Explanation Description of the trigger. Constraints None Value 1–255 characters Default value None
script	Yes	String	Explanation Nameof the script that implements trigger functions. Constraints None Value None Default value None
jscode	No	string	Explanation JavaScript code in the trigger. Constraints None Value None Default value None
active	No	String	Explanation Whether to activate the trigger. Constraints None Value true: The license is activated. false: The value is not activated. Default value false
event	No	String	Explanation Conditions for starting a trigger. Constraints None Value BeforeInsert: Starts the trigger before inserting a record. AfterInsert: Starts the trigger after a record is inserted. BeforeUpdate: Starts the trigger before records are updated. AfterUpdate: Starts the trigger after a record is updated. BeforeDelete: Starts the trigger before a record is deleted. AfterDelete: Starts the trigger after a record is deleted. Default value None

Response Parameters

**Table 3** Response parameters
Parameter	Type	Description
resCode	String	Explanation Return code. Value If the request is successful, 0 is returned. For details about other error codes, see Error Codes.
resMsg	String	Explanation Message returned. Value If the request is successful, "Success" is returned. In other cases, an error message is returned.
result	string	Explanation If the request is successful, an ID is returned. Value None

Example Request

To add a trigger for an object instance, send the following request:

POST https://Huawei Cloud Astro Zero domain name/u-route/baas/metadata/v1.0/Object/cust000000aKtFZpERvc/Trigger
{
    "name": "Trigger_01",
    "label": "Trigger 01",
    "description": null,
    "script": "string",
    "jscode": "Hello, world;rn",
    "active": true,
    "event": "BeforeInsert"
}

Example Response

{
    "resCode": "0",
    "resMsg": "Success",
    "result": "001i000000SIrEi3E0a8"
}

Status Code

See Status Codes.

Error Code

See Error Codes.

Parent topic: Operations on Custom Objects

Previous topic: Adding a Field to an Object Instance

Next topic: Adding a Validator for an Object Instance

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