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# Method name: afterDistinct(value: any, context: HookContext)

# Method package: wixDataHooks

# Method menu location: wixDataHooks --> afterDistinct

# Method Link: https://dev.wix.com/docs/velo/events-service-plugins/data/hooks/wix-data-hooks/after-distinct.md

# Method Description:

A hook triggered after a distinct query operation.

The `afterDistinct()` hook allows you to modify the results of the distinct query before they are returned to the caller. The hook is triggered for each value in the `items` array in the [WixDataQueryResult](https://dev.wix.com/docs/velo/api-reference/wix-data/wix-data-query-result/introduction.md) object. The hook runs after the distinct query operation finishes and before the [`distinct()`](https://dev.wix.com/docs/velo/api-reference/wix-data/wix-data-query/distinct.md) method returns.

Return a distinct value or a Promise that resolves to a distinct value.

If returning a Promise, the value is used as the result regardless of whether the Promise is fulfilled or rejected. A rejected Promise also triggers the [`onFailure()`](#onFailure) hook, if it has been registered.



# Method Code Examples:

*** Note: do not assume any prop names or enum values other than the ones in the example.

## An `afterDistinct()` hook

```javascript
// In data.js

export function myCollection_afterDistinct(value, context) {
  let hookContext = context; // See below

  // Some changes to the distinct value

  return value;
}

/*
 * hookContext:
 *
 * {
 *   "collectionName": "myCollection",
 *   "userId":         "f45jf8d2-grkj-2opd-4ovk-9rfj4wo5tvj3",
 *   "userRole":       "siteOwner"
 * }
 */
```

## Modify the distinct value before it is returned by `distinct()`

```javascript
// In data.js

export function myCollection_afterDistinct(value, context) {
  let hookContext = context; // See below

  // Convert and display the value as a percentage
  value = Math.round(value * 100);

  return value;
}

/*
 * hookContext:
 *
 * {
 *   "collectionName": "myCollection",
 *   "userId":         "f45jf8d2-grkj-2opd-4ovk-9rfj4wo5tvj3",
 *   "userRole":       "siteOwner"
 * }
 */
```

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