Can we use callout in trigger?

Can we use callout in trigger?

Callout from triggers are currently not supported. You can invoke callouts from triggers by encapsulating the callouts in @future methods. You can get the more information regarding the Annotations in this link.

Can a trigger call a future method?

You can’t call a future method from a future method. Nor can you invoke a trigger that calls a future method while running a future method.

Which actions may cause trigger to fire?

The events that fire a trigger include the following:

• DML statements that modify data in a table ( INSERT , UPDATE , or DELETE )
• DDL statements.
• System events such as startup, shutdown, and error messages.
• User events such as logon and logoff. Note: Oracle Forms can define, store, and run triggers of a different sort.

Can you execute a callout from a trigger?

This could obviously cause significant contention with other transactions and impact performance. The only way that you can execute a callout from a trigger is to schedule it to run asynchronously, for example by executing a method with the @future method as you have found.

Can you use HTTP callout from triggers in apex?

Callout from triggers are currently not supported. How can I get data to an external Web Service using Apex code? However i can use @future method but it can only be support void and this method cannot return results, i need to be able to send data to external ervice and receive acknowlegements from it.

How to use outbound messages in Salesforce trigger?

You can use outbound messages which can send a soap request to an endpoint using workflow, or you can use the streaming api where you can create push topics to send push notifications to subscribers. Of the two options outbound messages is simplest if your endpoint supports soap. Thanks for contributing an answer to Stack Overflow!