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## Resource: Working with Wix App Collection Fields

## Article: Working with Wix App Collection Fields

## Article Link: https://dev.wix.com/docs/develop-websites/articles/wix-apps/wix-app-collections/working-with-wix-app-collection-fields.md

## Article Content:

# Working with Wix App Collection Fields

[Wix app collections](https://dev.wix.com/docs/develop-websites/articles/databases/wix-data/collections/working-with-wix-app-collections-and-code.md) are special collections added by some
[apps made by Wix](https://dev.wix.com/docs/develop-websites/articles/wix-apps/about-apps-made-by-wix.md) when they are installed on a site. These collections have fixed permissions that cannot be changed.

The fields in each collection support different data query and site integration functionalities, such as [sorting](https://dev.wix.com/docs/velo/api-reference/wix-data/wix-data-sort/introduction.md), [filtering](https://dev.wix.com/docs/velo/api-reference/wix-data/wix-data-filter/introduction.md), or [connecting the collection data to a site](https://support.wix.com/en/article/cms-formerly-content-manager-displaying-collection-content-on-your-page). When working with a Wix app collection, check whether its fields support the action you want to perform. You can find information about each Wix app collection in the articles below.

The following table lists the potential functionalities each field might support:

| Functionality         | Description                                                                                                                                                                                                                                                                                                                                                                                |
| --------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Type                  | [Field type](https://support.wix.com/en/article/cms-formerly-content-manager-supported-content-in-collection-field-types).                                                                                                                                                                                                                                                                 |
| Connecting to data    | Whether the field can be used to [display data on the site](https://support.wix.com/en/article/cms-formerly-content-manager-displaying-collection-content-on-your-page).                                                                                                                                                                                                                   |
| Used in a dynamic URL | Whether the field can be used in a [dynamic page URL](https://dev.wix.com/docs/develop-websites/articles/databases/wix-data/dynamic-pages/making-dynamic-page-urls-meaningful-with-prefixes.md).                                                                                                                                                                                              |
| Sorting               | Whether the field can be used to [sort](https://support.wix.com/en/article/cms-formerly-content-manager-hiding-sorting-and-filtering-fields-in-your-collection-view#sorting-items-in-your-collection) the collection.                                                                                                                                                                      |
| Filtering             | Whether the field can be used to [filter](https://support.wix.com/en/article/cms-formerly-content-manager-hiding-sorting-and-filtering-fields-in-your-collection-view#adding-filters-to-fields-in-your-collection-views) the collection. If yes, the [filter methods](https://dev.wix.com/docs/velo/api-reference/wix-data/wix-data-filter/introduction.md) that can be called on the fields. |
| Read-only             | Whether the field is read-only. Some fields cannot be edited or managed from the collection. You can only update these fields from the relevant app in the [site's dashboard](https://support.wix.com/en/article/accessing-your-sites-dashboard).                                                                                                                                          |

## See also

- [About apps made by Wix](https://dev.wix.com/docs/develop-websites/articles/wix-apps/about-apps-made-by-wix.md)
- [Working with Wix app collections and code](https://dev.wix.com/docs/develop-websites/articles/databases/wix-data/collections/working-with-wix-app-collections-and-code.md)
- [Querying Wix app collections](https://dev.wix.com/docs/develop-websites/articles/wix-apps/wix-app-collections/querying-wix-app-collections.md)