Custom fields for post or terms which don’t update on post update
I need to have custom fields for each post and terms. But how can I create these fields which don’t update when post or terms is updated in backend.
Lets suppose we have a custom field named “revenue” for custom post type “product”.
Now due to actions/transaction of user on the front end the value in the field “revenue” for a post(ID = 7) is 2500..
Then some one decides to edit some other data in this post(ID = 7) and try to edit the post in backend. i.e this post is being in edit mode for suppose 5 minutes.
In those 5 minutes 3 transactions occur in front end so the actual value in the field “revenue’ is 4000
But since the post is in edit mode and value there is only 2500 and the use updates post ..
so now after the update the value in the field “revenue” is 2500 instead of 4000
so how can I avoid that Do I need to create some different kind of custom fields ? or do I need to have something other than custom fields to hold this data
Can you please advice me how to proceed with this