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Excerpt
Post functions are provided with an option to control their execution. You need to input a Nunjucks template in the `Condition` `Condition` field, and based on the result of that expression, the post-function will either be executed or skipped.

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To add a condition to control the execution of the post-function :

Select the check box Run this post-function only if a condition is verified.
Type a Nunjucks template that returns either trueor false.

Note that any non-empty string that is not false will be considered as true and will thus let the post-function run.

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`Expected value in the Nunjucks template`

The value should be either a boolean value (true or false) or more generally any text that will be interpreted as either "truthy" or "falsy".

Text: Any text will be interpreted as "truthy" (the equivalent of true) except false, an empty string, a string consisting only of whitespaces. For example, the following text will be considered as "truthy":

true
1
A string
[Object object]
[]

Boolean logic operators: You can use traditional boolean logic operators, such as or, and and not, to combine conditions. You can also use parentheses to group expressions. For example:

{{ 1 == 1 or 1==2 }}
{{ issue.key == 'TEST-1' and issue.fields.subject == 'Do it' }}
{{ true and (false or true) }}
{{ not 1==1 }}
{{ issue.fields.description is null }} returns true if the issue has no description
{{ issue.fields.assignee is not null }} returns true if the issue has an Assignee

Examples of Nunjucks expressions returning a "truthy" value:

{{issue.fields.assignee}} if the issue is assigned
{{issue.fields.assignee.accountId == "accountId:557058:8952dfd1-85c4-493f-87d8-d383b987e05c"}} if the issue is assigned to the user whose accountId is "557058:8952dfd1-85c4-493f-87d8-d383b987e05c"
{{issue.fields.description is not null}} if the issue's description is not empty
{{issue.fields.assignee and issue.fields.status.name == "In Progress"}} if the issue is assigned and in the “In Progress” status

`Sample use cases for Conditional execution`

A tester creates an issue. The created issue should be automatically assigned to the Product Owner, only if the issue is a BUG.

Create a Product Owner project role, with the product owner as the only member.
Add the Assign to role member post-function to the Create transition of the issue workflow.
Select Product Owner as the project role.
Select the check box Run this post-function only if a condition is verified.
Type the following code in Condition.

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title	Steps

Panel

Code Block
{{ issue.fields.issuetype.name == "Bug" }}

Automatically escalate Automatically escalate an issue if it is being raised with a "Blocker" priority.

Add the Transition issue post-function to the Create transition of the issue's workflow.
Input the transition name or ID of the transition that escalates the issue.
Select the check box Run this post-function only if a condition is verified.
Write the following content in the Condition section.

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title	Steps

Panel

Code Block
{{ issue.fields.priority == "Blocker" }}

Place this post-function at the end in the list of post-functions.

Automatically transition the Epic when all Stories are resolved.

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title	Steps

Add the Transition current issue post-function to the Resolve transition of the Story workflow.
Input the transition name or ID of the Resolve transition.
Select the check box Run this post-function only if a condition is verified.

Write the following content in the Condition section.

Code Block

{% set stories = issue | epic | stories %}
{% set trigger = true %}
{% for story in stories %}
	{% if story.fields.status.name != "Resolved" %}
		{% set trigger = false %}
	{% endif %}
{% endfor %}
{{ trigger }}

Place this post-function at the end in the list of post-functions.

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Copy value from a Single Version Picker select list to the Fix Version(s) field if the resolution provided while closing the issue is "Fixed".

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title	Steps

Add the Copy value from field to field post-function to the Close transition of the issue's workflow.
Select the Single version picker in the From field.
Select the Fix Version/s in the To field.
Select the check box Run this post-function only if a condition is verified.
Write the following content in the Condition section.
Code Block
{{ issue.fields.resolution.name == "Fixed" }}

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Assign a Bug to a Product Manager only when its priority is Critical

Add the Assign to role member post-function to the transition of the issue's workflow.
Select Product Managers as the Project Role.
Select Conditional execution and write the following condition:

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title	Steps

Panel

Code Block
{{ issue.fields.issuetype.name == "Bug" and issue.fields.priority.name == "Critical" }}

Transition an issue to In Progress status when the issue is either of High priority or the reporter of the issue belongs to Service Desk Customers Project role

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title	Steps

Add the Transition issuepost-function to the Create transition of the issue's workflow.
Select Start Progress as the transition to be triggered.

Select Conditional execution and write the following condition:

Code Block
{{ issue.fields.priority.name == "High" or issue.fields.priority.name == "Highest" or issue.fields.reporter \| isInRole("Service Desk Customers")}}

`Link issues that belong to the project with key “BACKEND” and created before 5 days`

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title	Steps

Add the Link issues to current issuepost-function to the transition of the issue's workflow.
Input the JQL expression as:
Code Block
project = "BACKEND"
Select the “Filter Expression” and input the following condition
Code Block
{{ now | date("diff", targetIssue.fields.created, "days") <=5 }}

Versions Compared

Old Version 48

New Version Current

Key

`Expected value in the Nunjucks template`

`Sample use cases for Conditional execution`

`Link issues that belong to the project with key “BACKEND” and created before 5 days`