Nunjucks Template Editor

Owned by Daniel Barrow
Last updated: Dec 26, 2023
3 min read

Starting with version 1.0.9-AC, JMWE for Jira Cloud provides a Nunjucks template editor in various post-function configuration screens. The Nunjucks editor includes syntax checking, automatic keyword highlighting, variables, and comments, among others. Additionally, the editor includes an inline help system detailing standard fields, blocks, tags, and global variables. 

Figure 1 - Nunjucks Editor (Basic)

The Nunjucks editor in JMWE Cloud is available for all input fields that support Nunjucks annotations. This editor includes a number of features for creating Nunjucks templates, including:

  • Automatic code indenting

  • Syntax checking

  • Keyword colors

  • Comments and variables

  • Find and Replace

  • Keyboard shortcuts

The Nunjucks editor includes the following functions across the top of the editor window:

  • Find - Search the current template code. Includes searching by regular expression. Hit Enter to perform the search.

  • Find Next - Locate the next occurrence of the search.

  • Replace - Find and replace text within the current template code. Enter a search term and hit Enter, then enter the replacement term. Hit Enter again to perform the search and confirm each replacement.

  • Lookup user… - Search for a user ID to insert into the template code.

  • Lookup group… - Search for a group ID to insert into the template code.

  • Test Nunjucks template… - Run a test of the Nunjucks template. Results will be displayed below the editor.

Inline Help

The editor also includes a Help section below the template field. The Help tabs include basic instructions for creating Nunjucks templates and shortcuts for inserting common template elements and fields. The Help section has the following tabs:

Expected Value - Not available in the Nunjucks Template Tester. This tab lists the possible expected values for the selected field. See Expected value for each field type for more information.

Nunjucks Basics - This tab has a brief introduction to Nunjucks.

Block and Tags - This tab lists a few important Nunjucks blocks and tags that are common to templates. Hover over any button to get more information, click on it to insert it into the editor. For more information, see Tags and Expressions.

Global Variables - This tab lists the Global variables that are available for Nunjucks templates. Hover over any button to get the information, click on it to insert it into the editor. For more information, see Variables in Nunjucks Templates.

Issue Fields - This tab lists the fields of the current issue, the linked issue, or the parent issue (depending on the current context). See Issue Fields for more information.

Filters - This tab lists the built-in and custom Nunjucks filters that can be applied to the variables in your Nunjucks templates. Hover over any button to get more information and click on it to insert it into the editor. See Nunjucks Filters and Custom Filters for more information.

More help - This menu includes links to additional help pages.

Example - Building a Nunjucks Template

Scenario: An issue is left unassigned.

Desired Outcome: The issue should be assigned to the Project Lead.

Steps to resolve:

  1. Open the Create transition immediately after the start of the workflow.

  2. Click Post Functions, then click Add post function.

  3. Select the Set issue fields post-function and click Add.

  4. Set the issue on which the post-function should operate.

  5. Select the Assignee field.

  6. In the Value editor, enter {{ }}.

  7. Click on the Globals tab of the Help section.

  8. Click on the issue variable button.

  9. Click on the Filters tab of the Help section.

  10. Click the projectInfo button under the Other Jira Info.

  11. Click the field(fieldName) button under Objects.

  12. Input "lead.name" in between the quotes.

  13. Under the Conditional Execution section, check Run this post-function only if a condition is verified.

  14. In the new editor, enter {{ }}.

  15. Click on the Issue Fields tab of the Help section.

  16. For Select a field, select Assignee.

  17. Under the Testing the field's value section click the issue.fields.assignee==null button.

  18. Click Add to add the post-function to the transition.

Nunjucks Template Tester

JMWE includes a tool for testing Nunjucks templates; with this tool a template can be built and tested before adding it to a post-function configuration. The tool is available through the JMWE Misc Workflow Extension section of Jira Administration. For more information, see Nunjucks Template Tester .

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