> ## Documentation Index
> Fetch the complete documentation index at: https://forest-chore-open-api.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Anonymize users in bulk

> This example shows how to bulk update users

As usual, you must declare the action on your collection.

```javascript theme={null}
// forest/users.js
const Liana = require('forest-express-sequelize');

Liana.collection('users', {
  actions: [
    {
      name: 'Anonymize',
      type: 'single',
    },
  ],
});
```

ou can then implement the post action as you need. Here the records are simply updated in bulk through the `sequelize` ORM.

```javascript theme={null}
// routes/users.js
const express = require('express');
const router = express.Router();
const models = require('../models');
const {
  ensureAuthenticated,
  RecordsGetter,
} = require('forest-express-sequelize');

router.post(
  '/actions/anonymize',
  ensureAuthenticated,
  parseRequestBody,
  async (request, response) => {
    const { query, user } = request;
    const recordsGetter = new RecordsGetter(models.user, user, query);
    const records = await recordsGetter.getAll();

    try {
      await models.user.update(
        {
          firstName: '*** Anonymized First Name ***',
          lastName: '*** Anonymized Last Name ***',
        },
        { where: { id: records.map((record) => record.id) } }
      );
      response.send({ success: 'User(s) anonymized' });
    } catch (e) {
      return response
        .status(400)
        .send({ error: `Failure during user anonymization: ${e.message}` });
    }
  }
);

module.exports = router;
```