---
title: Push embedded documents
slug: '3166'
canonical_url: https://docs.coveo.com/en/3166/
collection: index-content
source_format: adoc
---
# Push embedded documents
The [Coveo indexing pipeline](https://docs.coveo.com/en/184/) can automatically detect and [index](https://docs.coveo.com/en/204/) certain kinds of embedded documents (for example, Excel spreadsheets embedded in Word documents).

In doing so, the index populates a set of [fields](https://docs.coveo.com/en/200/) which establish a single-level parent-child relationship between the parent document and its embedded children:

* `@topparent`: The parent in the given parent-child relationship.
* `@isattachment`: Populated in child items only.
If present, has the same value as `@topparent`.
* `@containsattachments`: Populated in parent items only.
If present, has the same value as `@topparent`.

It's possible to leverage those fields in result folding.

## Folding embedded items with the JavaScript Search Framework

Use a [`FoldingForThread`](https://coveo.github.io/search-ui/classes/foldingforthread.html) component, setting the following options:

```html
<div class="CoveoFoldingForThread"
     data-field="@topparent"
     data-child="@containsattachment"
     data-parent="@isattachment"></div>
```

See [Folding results - One-level relationships](https://docs.coveo.com/en/428#one-level-relationships) for details.

## Folding embedded items with the Coveo APIs directly

In your Search API requests, specify the following:

```json
...
"filterFIeld": "@topparent",
"parentField": "@containsattachments",
"childField": "@isattachment",
...
```

See [Handle folded results](https://docs.coveo.com/en/1372#handle-folded-results) for details.