Gantt

Represents a Gantt chart.

Available since 2022.1

Properties

Name	Type	Description
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}
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 https://www.jetbrains.com.cn/en-us/help/youtrack/devportal/apps-extension-properties.html. 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()); } });
isNew	Boolean	Read-only. When `true`, the entity is created in the current transaction. Otherwise, `false`. Available since 2018.2.42351
issues	Set.<Issue>	Read-only. The set of issues that have been added to the Gantt chart.
name	String	Read-only. The name of the Gantt chart.
owner	User	Read-only. The user who created the Gantt chart.
projects	Set.<Project>	Read-only. The projects that this Gantt chart works with.
startTimestamp	Number	Read-only. The start date for the issues on the Gantt chart.

Methods

findByExtensionProperties

static findByExtensionProperties(extensionPropertiesQuery)

Searches for Gantt 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.<Gantt>	The set of Gantt entities that contain the specified extension properties.

Example

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

findChartByName

static findChartByName(name)

Finds the most relevant chart with the specified name that is visible to the current user.

Parameters

Name	Type	Description
name	String	The name of the chart to search for.

Return Value

Type	Description
Gantt	The most relevant chart found by name.

addIssue

addIssue(issue)

Adds the specified issue to the Gantt chart.

Parameters

Name	Type	Description
issue	Issue	The issue to add to the Gantt chart.

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`.

containsIssue

containsIssue(issue)

Checks whether the issue belongs to the Gantt chart.

Parameters

Name	Type	Description
issue	Issue	The issue for which the condition is checked.

Return Value

Type	Description
Boolean	If the issue belongs to the Gantt chart, 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.

removeIssue

removeIssue(issue)

Removes the specified issue from the Gantt chart. If the issue was not present on the chart, nothing happens.

Parameters

Name	Type	Description
issue	Issue	The issue to remove from the Gantt chart.

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`.

22 November 2025