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# Method name: beforeGet(itemId: string, context: HookContext)

# Method package: wixDataHooks

# Method menu location: wixDataHooks --> beforeGet

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

# Method Description:

A hook that is triggered before a `get()` operation.

The `beforeGet()` hook runs when the [`get()`](wix-data.html#get)
 function is called.

 The hook does not run when the [`find`](wix-data.WixDataQuery.html#find)
 function is called or when a dataset retrieves items from the collection it
 is connected to.

 Return a string or a Promise that resolves to a string from the `beforeGet()`
 function. The returned string will be used as the `itemId` parameter for the
 [`get()`](wix-data.html#get) operation. The item with the new `itemId` will
 be retrieved instead of the item with the original `itemId`.

 If the returned value is of the wrong type, the value is ignored.

 A rejected Promise blocks the call to [`get()`](wix-data.html#get)
 and also calls the [`onFailure()`](#onFailure) hook if it has been registered.

 Because the `beforeGet()` hook is called before [`get()`](wix-data.html#get)
 is executed, it can affect which item is retrieved
 or block the [`get()`](wix-data.html#get).



# Method Code Examples:

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

## A beforeGet hook

```javascript
// In data.js

export function myCollection_beforeGet(itemId, context) {
  let hookContext = context;  // see below

  // change the item to get

  return itemId;
}

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

## Change which item is retrieved using a beforeGet hook

```javascript
// In data.js

export function myCollection_beforeGet(itemId, context) {
  let hookContext = context;  // see below

  // change the item to get
  let newItemId = "1234";

  return newItemId;
}

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

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