ArticleAttachment

Represents a file that is attached to an article.

Properties

Name	Type	Description
author	User	Read-only. The user who attached the file to the issue. Available since 2026.1
becomesRemoved	Boolean	Read-only. When `true`, the entity is removed in the current transaction. Otherwise, `false`. This property can become `true` only in on-change rules when the rule is triggered on the removal of an issue or an article. In the rule code, the `runOn` rule property must contain the `removal` parameter set to `true`. Available since 2017.4.37915 runOn: {removal: true}
charset	String	Read-only. The charset type of the file. Only applicable to text files. Available since 2019.2.53994
created	Number	Read-only. The date and time when the attachment was created as a timestamp. Available since 2026.1
extension	String	Read-only. The extension that defines the file type.
extensionProperties	Object	The object containing extension properties for this entity and their values. Extension properties are custom properties that might be added to core YouTrack entities by an app. For details about extension properties, see Extension Properties. Available since 2024.3 const entities = require('@jetbrains/youtrack-scripting-api/entities'); exports.rule = entities.Issue.action({ command: 'test', action: function (ctx) { const printValues = () => { return 'stringProp:' + ctx.issue.extensionProperties.stringProp + ';' + 'integerProp:' + ctx.issue.extensionProperties.integerProp + ';' + 'booleanProp:' + ctx.issue.extensionProperties.booleanProp + ';' + 'issueProp:' + ctx.issue.extensionProperties.issueProp?.id + ';' + 'issuesProp:' + ctx.issue.extensionProperties.issuesProp?.first()?.id + ';' } ctx.issue.addComment(printValues()); } });
fileUrl	String	Read-only. The URL of the article attachment. Available since 2026.1
isNew	Boolean	Read-only. When `true`, the entity is created in the current transaction. Otherwise, `false`. Available since 2018.2.42351
isRemoved	Boolean	Read-only. If the attachment is removed, this property is `true`. Available since 2026.1
metaData	String	Read-only. The image dimensions. For image files, the value is rw=_width_&rh=_height_. For non-image files, the value is `empty`. Available since 2026.1
mimeType	String	Read-only. The MIME type of the file. Available since 2019.2.53994
name	String	Read-only. The name of the file.
size	Number	Read-only. The size of the attached file in bytes.

Methods

action

static action(ruleProperties)

Creates a declaration of a rule that a user can apply to an article attachment using a menu option. The object that is returned by this method is normally exported to the rule property, otherwise it is not treated as a rule.

Parameters

Name	Type	Description
ruleProperties	Object	A JSON object that defines the properties for the rule.

Properties of ruleProperties

Name	Type	Description
title	string	The human-readable name of the rule. Displayed in the administrative UI in YouTrack.
userInput	Object	An object that defines the properties for information that will be requested from the user who triggers the action rule.
userInput.type	string, Object	The data type for the value that is requested from the user. The supported types are `entities.Field.dateTimeType`, `entities.Field.dateType`, `entities.Field.integerType`, `entities.Field.floatType`, `entities.Field.periodType`, `entities.Field.stringType`, `entities.Build`, `entities.EnumField`, `entities.Issue`, `entities.IssueTag`, `entities.OwnedField`, `entities.Project`, `entities.ProjectVersion`, `entities.UserGroup`, and `entities.User`.
userInput.description	string	The label for the control that is used to collect additional information from the user.
guard	ArticleAttachment~guardFunction	A function that is invoked to determine whether the action is applicable to an article attachment.
action	ArticleAttachment~actionFunction	The function that is invoked when a user triggers this action.
requirements	Requirements	The set of entities that must be present for the script to work as expected.

Return Value

Type	Description
Object	The object representation of the rule.

Example

findByExtensionProperties

static findByExtensionProperties(extensionPropertiesQuery)

Searches for ArticleAttachment entities with extension properties that match the specified query.

Available since 2024.3.43260

Parameters

Name	Type	Description
extensionPropertiesQuery	Object	The extension properties query, defined as a set of key-value pairs representing properties and their corresponding values.

Return Value

Type	Description
Set .< ArticleAttachment >	The set of ArticleAttachment entities that contain the specified extension properties.

Example

{ property1: "value1", property2: "value2" }

becomes

becomes(fieldName, expected)

Checks whether a field is set to an expected value in the current transaction.

Parameters

Name	Type	Description
fieldName	string	The name of the field to check.
expected	string	The expected value.

Return Value

Type	Description
boolean	If the field is set to the expected value, returns `true`.

canBeReadBy

canBeReadBy(fieldName, user)

Checks whether a user has permission to read the field.

Parameters

Name	Type	Description
fieldName	string	The name of the field.
user	User	The user for whom the permission to read the field is checked.

Return Value

Type	Description
boolean	If the user can read the field, returns `true`.

canBeWrittenBy

canBeWrittenBy(fieldName, user)

Checks whether a user has permission to update the field.

Parameters

Name	Type	Description
fieldName	string	The name of the field.
user	User	The user for whom the permission to update the field is checked.

Return Value

Type	Description
boolean	If the user can update the field, returns `true`.

is

is(fieldName, expected)

Checks whether a field is equal to an expected value.

Available since 2019.2.55603

Parameters

Name	Type	Description
fieldName	string	The name of the field to check.
expected	string	The expected value.

Return Value

Type	Description
boolean	If the field is equal to the expected value, returns `true`.

isChanged

isChanged(fieldName)

Checks whether the value of a field is changed in the current transaction.

Parameters

Name	Type	Description
fieldName	string	The name of the field to check.

Return Value

Type	Description
boolean	If the value of the field is changed in the current transaction, returns `true`.

oldValue

oldValue(fieldName)

Returns the previous value of a single-value field before an update was applied. If the field is not changed in the transaction, returns null.

Parameters

Name	Type	Description
fieldName	string	The name of the field.

Return Value

Type	Description
Object	If the field is changed in the current transaction, the previous value of the field. Otherwise, `null`.

required

required(fieldName, message)

Asserts that a value is set for a field. If a value for the required field is not set, the specified message is displayed in the user interface.

Parameters

Name	Type	Description
fieldName	string	The name of the field to check.
message	string	The message that is displayed to the user that describes the field requirement.

was

was(fieldName, expected)

Checks whether a field was equal to an expected value prior to the current transaction.

Available since 2019.2.55603

Parameters

Name	Type	Description
fieldName	string	The name of the field to check.
expected	string	The expected value.

Return Value

Type	Description
boolean	If the field was equal to the expected value, returns `true`.

10 September 2026