useAction

info

useAction waits for the action to finish execution before returning the result. If you need to perform optimistic updates, use useOptimisticAction instead.

With this hook, you get full control of the action execution flow. Let's say, for instance, you want to change what's displayed by a component when a button is clicked.

Example

1. Define a new action called greetUser, that takes a name as input and returns a greeting:

const schema = z.object({
  name: z.string(),
});

export const greetUser = actionClient
  .schema(schema)
  .define(async ({ name }) => {
    return { message: `Hello ${name}!` };
  });

2. In your Client Component, you can use it like this:

import { useAction } from "next-safe-action/hooks";
import { greetUser } from "@/app/greet-action";

export default function Greet() {
  const [name, setName] = useState("");
  const { execute, result } = useAction(greetUser);

  return (
    <div>
      <input type="text" onChange={(e) => setName(e.target.value)} />
      <button
        onClick={() => {
          execute({ name });
        }}>
        Greet user
      </button>
      {result.data?.message ? <p>{result.data.message}</p> : null}
    </div>
  );
}

As you can see, here we display a greet message after the action is performed, if it succeeds.

useAction arguments

useAction has the following arguments:

Name	Type	Purpose
safeAction	SafeAction	This is the action that will be called when you use execute from hook's return object.
callbacks?	HookCallbacks	Optional callbacks. More information about them here.

useAction return object

useAction returns an object with the following properties:

Name	Type	Purpose
execute	(input: InferIn<S>) => void	An action caller with no return. The input is the same as the safe action you passed to the hook.
result	HookResult	When the action gets called via execute, this is the result object.
status	HookActionStatus	The action current status.
reset	() => void	You can programmatically reset the result object with this function.

Explore a working example here.