How to insert information using Nunjucks annotations

Nunjucks in JMWE for JIRA Cloud

Nunjucks in JMWE for Jira Cloud is used to insert information in

• Set issue fields and Set field value of linked issues post-function to set a field value
• Comment issue(s) and Comment linked issues to create the body of the comment
• Conditional execution section to conditionally execute a post-function
• Transition [Current/Linked/Parent] issue(s) for specifying the transition to be triggered
• Create/Clone issue post-function to
  • Calculate a project by selecting Calculated in Project
  • Calculate a parent issue key by selecting Another issue in Parent issue
  • Set fields of new issue by selecting Set field value to
  • Add a comment to the current issue
• Email issue post-function to
  • Write the Subject, HTML body, Text body
  • Set the Recipients from the script in Users from template and Groups from template
• Unlink issues from the current issue post-function to unlink issues based on the result of a Nunjucks template
• Admin screen to test/run Nunjucks templates
• Link issues to the current issue post-function to write JQL search expression

You can insert issue and transition information into the value using the templating features available in Nunjucks. Some basic templating features are described in this document, and more are documented on the Nunjucks website.

Templating features in Nunjucks

• Nunjucks template editor and tester
• Variables used in Nunjucks templates — A variable looks up a value from the template context. This documents details on the variables available in JMWE and how to create custom variables.
• Built in Nunjucks Filters — Filters are essentially functions that can be applied to variables. This document details some of the Nunjucks built-in filters.
• Custom Nunjucks filters — Filters are essentially functions that can be applied to variables. Filters are called with a pipe operator (|) and can take arguments. This document details custom Nunjucks filters created for JMWE.
• Tags and Expressions — Tags are special blocks that perform operations on sections of the template and Expressions are literal expressions similar to those in javascript.
• Accessing the details of an issue or a transition in Nunjucks — This document explains how to access the details of issue and transition objects, such as those available through the issue and transition variables. To see an example of the structure of an issue go to <base_URL_of_Jira>/rest/api/latest/issue/{issueKey}. The fields displayed through this REST API actually depend on the fields set on the issue. 
• Conditional execution — Post functions are provided with an option to control their execution. You need to input a Nunjucks template in the Condition field, and based on the result of that expression, the post-function will either be executed or skipped.
• Shared Nunjucks Templates

You might also want to look at Accessing the details of an issue or a transition in Nunjucks to know how to access the details of an issue or a transition.

See here for more templating features available in Nunjucks. You might also want to see here for use cases with Nunjucks annotations.