Hook to compare the already saved value of moderation state of node and updated value
46256
how to get the original entity on hook_entity_presave?
106728
Detecting Unsaved Changes
68365
Setting post meta data to random value during post status transition / on publish
43391
prevent user creating a duplicate node title
91284
Per-post opt-in notifications to revisit an edited post which you downvoted
118550
How i Update the managed metadata field with one more value keep old value in that column
14187
Live refresh shows "modified" on tagged questions even when unmodified
60138
Update node revision programmatly
101264
Solr conditional adds/updates?
119
Add ability to Flag a User or Suggested Edit
70256
Notify question OP (and those who marked it a favourite) if an answer has been modified
41178
Is there a way to make a node property value the default?
142942
"Seen" status is earlier than the user's last post
121066
How to check if list item already exist when adding it with
154176
How can I tell what has changed in a Comprehensive Rules update?
66496
How to detect unsaved data in form when user leaves the page?
90704
How can I tell when a MySQL table was last updated?