CODEWITHSUNDEEP
ruby-on-railsmodellimit
zenben1126
zenben1126

Reputation: 685

How to limit a model to one record per day (Rails)?

I would like to build a simple app where the user tracks how far he has run each day. I want it to be so that there is only one model entry per day. How do I limit the model to only allow one entry per day? I found a solution that suggests doing the following for a journal with unique daily journals: 

add_index :journal_entries, [:user_id, :created_on], unique: true

However, I don't fully understand how to implement this. Do I have to have another model for this index?

Thank you!

Upvotes: 3

Views: 1340

Answers (1)

OneChillDude
OneChillDude

Reputation: 8006

You probably want to do this from the controller, what I would recommend is when the user tries to enter an entry, you use first_or_create!.

@entry = Entry.where(created_at: Time.now.beginning_of_day.utc..Time.now.end_of_day.utc).first_or_create!
@entry.update_attributes(entry_params)

The above code finds an entry created within the current date, or creates one if it does not exist.

Upvotes: 4

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