How can i instruct "JIRA misc customfield " to perform calculation only when a issue update

Question

I am looking for a plugin that can perform calculation only for given below condition:

1)When a issue updates

2)At the end of the day ( or every time date changes )

To make my point more clear. Please consider the following example. Lets say i want to calculate rating and display it to user. In order to do that i created a custom field name "rating". Now i want value of rating should be computed as follow:

1)Whenever user changes status, priority or severity of issue, value of rating should be increased by 1

2)Value of rating should be increased by 1, every time issue becomes older by 1 day. If the value of rating for a issue is 10 as of now. It should be 11 by tomorrow.

Could you please tell usif i can do that using plugin "Jira misc CustomField"

or

Is there any other plugin that can help us out.

Could you please give your valuable suggestion.

Regards,

Thanks.

Vasiliy Zverev · Answer

You need to create you own eventListener. See this for more information: https://developer.atlassian.com/jiradev/jira-platform/guides/other/tutorial-writing-jira-event-listeners-with-the-atlassian-event-library

Tarun6 · Answer

I need second option. Could you please tell how could we achieve that using plugin

Vasiliy Zverev · Answer

If you need to update some field after issue update you have following option:

* If you can spesify all transitions when requared field is changed you can change custom field by postfunction. To use you have to forbid to edit requred field onto edit screen
* If some field have to be updated on every issue uodate even you need a event listener which will listen update issue event and do requared update.

Which option do you need?