# Sub-articles

This resource lets you work with the sub-articles of the current article.
|  Resource  |     ```GENERIC /api/articles/{articleID}/childArticles ```    |
| --- | --- |
|  Returned entity  |  [Article](api-entity-Article.html). For the description of the entity attributes, see [Supported Fields](#Article-supported-fields) section.  |
|  Supported methods  |      * `GET`: [Sub-articles](#get_all-Article-method).    * `POST`: [Sub-articles](#create-Article-method).    |

## Article attributes

Represents an article.

### Related Resources

Below you can find the list of resources that let you work with this entity.

* [Articles](resource-api-articles.html)

* [Parent Article](resource-api-articles-articleID-parentArticle.html)

* [Sub-articles]()

* [Articles in a Project](resource-api-admin-projects-projectID-articles.html)

Extends [BaseArticle](api-entity-BaseArticle.html)

### Attributes

This table describes attributes of the `Article` entity.

* To receive an attribute in the response from the server, specify it explicitly in the `fields` request parameter.

* To update an attribute, provide it in the body of a POST request.

|  Field  |  Type  |  Description  |
| --- | --- | --- |
|  id  |  String  |  The ID of the article. `Read-only`.  |
|  attachments  |  [Array of ArticleAttachments](api-entity-ArticleAttachment.html)  |  The list of files attached to the article.  |
|  childArticles  |  [Array of Articles](api-entity-Article.html)  |  The list of sub-articles of the current one.  |
|  comments  |  [Array of ArticleComments](api-entity-ArticleComment.html)  |  The list of comments to the article.  |
|  content  |  String  |  The content of the article. `Can be null`.  |
|  created  |  Long  |  The timestamp in milliseconds indicating the moment when the article was created. Stored as a unix timestamp at UTC. `Read-only`.  |
|  externalArticle  |  [ExternalArticle](api-entity-ExternalArticle.html)  |  The reference to the article or a similar object in the originating third-party system. `Read-only`. `Can be null`.  |
|  hasChildren  |  Boolean  |  When `true`, the article has sub-articles. `Read-only`.  |
|  hasStar  |  Boolean  |  `true` if the current user added the "Star" tag to this article. Otherwise, `false`.  |
|  idReadable  |  String  |  The article ID. `Read-only`.  |
|  ordinal  |  Long  |  The position of the article in the tree. `Read-only`.  |
|  parentArticle  |  [Article](api-entity-Article.html)  |  The parent article of the current one. `Can be null`.  |
|  pinnedComments  |  [Array of ArticleComments](api-entity-ArticleComment.html)  |  The list of comments that are pinned in the article. `Read-only`.  |
|  project  |  [Project](api-entity-Project.html)  |  The project where the article belongs. `Read-only`.  |
|  reporter  |  [User](api-entity-User.html)  |  The user who created the article. `Can be null`.  |
|  summary  |  String  |  The article title. `Can be null`.  |
|  tags  |  [Array of Tags](api-entity-Tag.html)  |  The list of tags that are added to the article.  |
|  updated  |  Long  |  The timestamp in milliseconds indicating the last update of the article. Stored as a unix timestamp at UTC. `Read-only`.  |
|  updatedBy  |  [User](api-entity-User.html)  |  The user who last updated the article. `Read-only`. `Can be null`.  |
|  visibility  |  [Visibility](api-entity-Visibility.html)  |  Visibility settings of the article. These settings describe who is allowed to see the article. `Can be null`.  |

## Read a List of Articles

Get the list of sub-articles of the current one.

### Required permissions

Requires Read Article permission for the parent article and the sub-articles. If article visibility is limited to some users or groups, the current user should be a part of this set or have the Override Visibility Restrictions permission. For the article reporter only the Create Article permission is required.

### Request syntax

```GENERIC
GET /api/articles/{articleID}/childArticles?{fields}&{$top}&{$skip}
```

|  null  |  The database ID of Article  |
| --- | --- |

### Request parameters

|  Parameter  |  Type  |  Description  |
| --- | --- | --- |
|  fields  |  String  |  A list of Article attributes that should be returned in the response. If no field is specified, only the `entityID` is returned.  |
|  $skip  |  Int  |  Optional. Lets you set a number of returned entities to skip before returning the first one.  |
|  $top  |  Int  |     Optional. Lets you specify the maximum number of entries that are returned in the response. If you don't set the $top value, the server limits the maximum number of returned entries.       The server returns a maximum of 42 entries for most resources that return collections. For more information, see [Pagination](api-concept-pagination.html).     |

### Sample

#### Sample request

```CURL
https://example.youtrack.cloud/api/articles/NP-A-7/childArticles?fields=id,summary,idReadable
```

#### Sample response body

```JSON
[
  {
    "idReadable": "NP-A-1",
    "summary": "The Basics of the Process",
    "id": "226-0",
    "$type": "Article"
  }
]
```

## Add a New Article

Add a new sub-article to the current article.

### Required permissions

Requires permissions: Update Article for both articles

### Request syntax

```GENERIC
POST /api/articles/{articleID}/childArticles?{fields}&{muteUpdateNotifications}
```

|  null  |  The database ID of Article  |
| --- | --- |

### Request parameters

|  Parameter  |  Type  |  Description  |
| --- | --- | --- |
|  fields  |  String  |  A list of Article attributes that should be returned in the response. If no field is specified, only the `entityID` is returned.  |
|  muteUpdateNotifications  |  Boolean  |  Set this parameter to `true` if no notifications should be sent on changes made by this request. This doesn't mute notifications sent by any workflow rules. Using this parameter requires Apply Commands Silently permission in all projects affected by the request. Available since 2021.3.  |

### Sample

To link an existing article as a sub-article to the current one, include the database ID of the sub-article in the body of the request.

#### Sample request

```CURL
https://example.youtrack.cloud/api/articles/NP-A-7/childArticles?fields=id,idReadable,summary
```

#### Sample request body

```JSON
{
  "idReadable": "NP-A-5",
  "id": "226-4",
  "$type": "Article"
}
```

#### Sample response body

```JSON
{
  "idReadable": "NP-A-5",
  "summary": "Documentation",
  "id": "226-4",
  "$type": "Article"
}
```