How to track WHEN a model attribute changes using Rails 4?

Question

I need to find a way to track the specific moment in which a model attribute has changed from one state to another.

For example, let's say I have a List model with an attribute called voting_status, which can be either true or false.
That attribute can be changed by the owner of a list with the press of a button from true to false, so that other users can start voting on it.
Once the first user votes, the voting_status changes back and the other users are not able to vote anymore, even though they did not get the chance to vote in the first place.
So I would like to make an if statement that checks if a user voted between the moment the owner clicked the button and now by using another model I have called Vote, which tracks the user that voted and the item which was voted.
The pseudo-code would look something like this: vote = Vote.find_by(user_id: 4) list = List.find(5) if vote.created_at is_between list.voting_status_changed?(from: true, to: false).when..DateTime.now user cannot vote else user can vote end
Unfortunately, I did not find any when method or something similar that can return the date in which the owner clicked that button, thus updating the attribute.

Any ideas? Thank you.

RAJ · Accepted Answer

You will need to use one of the following gems to keep track of changes.

Espinita

All the above mentioned gems will work for you

EDIT: I have not used but you can give a try to Public Activity Gem too.

Answers (2)