How to call invocable method from flow

Question

What's the process to call an invocable method within a flow? Any guidance on setup?

Answer 1

To call an invocable method from a Flow in Salesforce, follow these steps:

Step 1: Create the Invocable Method in Apex: First, create an Apex class with a method that has the @InvocableMethod annotation. This lets the method be called directly from a Flow.

public class MyInvocableClass {

    @InvocableMethod

    public static void myMethod(List<String> inputParams) {

        // Your logic here

    }

}

• The method must be public static and accept a single List parameter (typically a List of custom Apex types or primitive data types).

Step 2: Go to Flow Builder: In Salesforce Setup, go to Flow Builder.

Step 3: Add an Action Element: In the Flow, include an Action element.

Step 4: Select Your Invocable Method: When you want to add an Action, look for a search box to help you find available actions. Type in your class name or method name, and you will see a list of options. Click on the method you want from this list. The method should be visible thanks to the @InvocableMethod annotation, which indicates that it is properly set up in the system.

Step 5: Configure Inputs and Outputs: Set the input values that you need to pass to the method and choose where to store the outputs. The Flow will identify the parameters automatically based on the method signature in Apex.

Step 6: Activate the Flow: After you set up your Flow, save it and turn it on.

Now, every time the Flow runs, it will call your Apex method. This method helps you add custom business logic to expand the capabilities of Flow. If you want to learn more about Azure, click here.