# Handle enums with alias labels in a smart action

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## Handle enums with alias labels in a smart action

**Context**: As a user to choose the input for a smart action field from a list of labels and I want a label to be pre-selected depending on the record's information. The labels do not correspond to the value to be updated in the database.

**Example**: I have a collection `companies` that has a `status` field. The status value in the database can be `rejected` or `live`.

In a smart action called update company status I want users to be able to select an alias value (i.e. `'rejeté'` for `rejected` and `'validé'` for `live`).

#### Implementation

In order not to duplicate the matching to be made between the different values from the UI to the database and the other way around, I create a `company-status-handler` file that will allow me to handle the conversion.

`services/companies-status-handler.js`

```jsx
exports.statusValueMatching = {
  rejected: 'rejeté',
  live: 'validé',
};

function getKeyByValue(object, value) {
  return Object.keys(object).find((key) => object[key] === value);
}

exports.convertStatusValue = (status, source) => {
  if (source === 'database') {
    return this.statusValueMatching[status];
  }
  return getKeyByValue(this.statusValueMatching, status);
};
```

`forest/companies.js`

```jsx
const { collection } = require('forest-express-sequelize');

const {
  convertStatusValue,
  statusValueMatching,
} = require('../services/companies-status-handler');

collection('companies', {
  actions: [
    {
      name: 'Update company status',
      type: 'single',
      fields: [
        {
          field: 'Statut',
          type: 'Enum',
          enums: Object.values(statusValueMatching),
        },
      ],
      values: (company) => {
        company.Statut = convertStatusValue(company.status, 'database');
        return company;
      },
    },
  ],
  fields: [],
  segments: [],
});
```

`routes/companies.js`

```javascript
const express = require('express');
const { PermissionMiddlewareCreator } = require('forest-express-sequelize');
const { companies } = require('../models');
const { convertStatusValue } = require('../services/companies-status-handler');

const router = express.Router();
const permissionMiddlewareCreator = new PermissionMiddlewareCreator(
  'companies'
);

router.post('/actions/update-company-status', (request, response, next) => {
  // Learn what this route does here: https://docs.forestadmin.com/documentation/v/v6/reference-guide/routes/default-routes#create-a-record
  const attr = request.body.data.attributes;
  companies
    .update(
      { status: convertStatusValue(attr.values.Statut, 'front') },
      { where: { id: attr.ids[0] } }
    )
    .then(() => response.send({ success: 'company updated' }));
});

module.exports = router;
```


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