Redmine

Sometimes two persons start editing the same text (issue, wiki site or oart of it (h1. section) at the same time) that results in conflicts on save action what is a way too late for such a feedback.
It would be useful to get the status (under work) before you start to edit this text too.

Implementation idea.
This could be triggred by the "edit action" which writes to a table the user id, the ressource id (wikisite or wikisite#ancor, issue or issuesite#ancor) and the start time.
If a new edit action is triggered a new entry is done in a table. If the save or Cancel action is triggered the rable entry id removed.
For every of the ite "crud content actions" triggered the table is checked and all entries with "startime+sessionlifetime<actual time" will be removed.
Then for every view/show action on content the table will be looked up for possible running changes onf this content and if yes, the site rednered will be enriched with this information "site/topic/Section under change" e.g with back ground color or similar.