# Extra Data

While in most cases it is possible to receive all required data through API mapping, in certain scenarios, it is useful to receive additional data for display purposes (such as retrieving data based on a currently selected value).

Extra data configurations can be performed at both editor and widget levels, using an array (allowing multiple extra data feeds) of the following properties for each entry:

* **URL:** API url to pull extra data from, required unless extra data is calculation from input data only.
* **Method:** Request method to pull data from the URL (defaults to GET).
* **Parameters:** "body", "url" or "query", defining where to send the parameters for the action.
* **Extra Body:** Extra json body to include in request (e.g. a filter value to pass on). Extra body is sent in body or query based on the parameters configuration.
* **Extra Headers:** Extra headers to include in request.
* **Input Pattern:** Json path or expression to apply on current data to create request body.
* **Output Pattern:** Json path or expression to apply on URL response.
* **Allow Blank:** Whether null data values should be allowed for URL requests (defaults to false).
* **Merge Path:** Json path to merge calculated data on full results (e.g. product).

An additional property is used above the array entries:

* **Extra Path:** Json path to merge all extra data on current record (e.g. extra).


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.rierino.com/design/user-interface/uis/extended-scope/extra-data.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.