Updating User Information in Statsig

When using the Statsig React SDK, it's essential to manage user updates correctly to reflect changes in your UI based on feature gates. If you encounter issues where the UI does not update after calling Statsig.updateUser, it may be due to how the user state is managed in your component.

Example Setup

In the following example, we demonstrate how to set up a basic component that checks a feature gate and updates the user information:

import React, { useState } from 'react';
import { StatsigProvider, Statsig } from '@statsig/react-sdk';

function Test() {
  const [userID, setUserID] = useState('user-that-fails');

  const handleUpdateUser = () => {
    // Update the user ID to one that passes the gate
    const newUserID = 'user-that-passes';
    setUserID(newUserID);
    Statsig.updateUser({ userID: newUserID });
  };

  return (
    <>  
      <button onClick={handleUpdateUser}>Update</button>
      <p>{Statsig.checkGate('test_gate') ? 'Pass' : 'Fail'}</p>
    </>
  );
}

function App() {
  return (
    <StatsigProvider
      sdkKey="your-sdk-key"
      user={{ userID: 'user-that-fails' }}
      waitForInitialization={true}
    >
      <Test />
    </StatsigProvider>
  );
}

Explanation

  1. State Management: We use React's useState hook to manage the userID. This allows us to trigger a re-render when the user ID changes.
  2. Updating User: When the button is clicked, we update the user ID and call Statsig.updateUser with the new ID. This ensures that Statsig is aware of the user change.
  3. Gate Check: The UI displays whether the user passes the gate based on the current user ID.

Common Pitfalls

  • Ensure that you are using state management to hold the user object. Statsig automatically calls updateUser when the user object changes, so managing it with useState is crucial for the UI to reflect the changes.

By following this approach, you should see the UI update correctly when the user information is modified.