CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3
Justin D.
Justin D.

Reputation: 4976

Rails - query database and don't show errors

I have a Notifications table that a query using an ID provided by the url parameters hash.

Say I have the following URL : videos/11?notification=5

The 5 maps to a notification. But say a user change 5for 7and submits the URL. If a notification with ID 7 does not exist, Rails sends an error saying it could not find a notification with ID 7. I would like it to simply ignore the error and continue. I am making some tests after the find so nothing unwanted happens.

Upvotes: 1

Views: 104

Answers (2)

cjhveal
cjhveal

Reputation: 5791

In your controller, you are likely using Notification.find. This will throw an error if no record can be found with the given id. The finder method Notification.find_by_id will not throw an exception if no record can be found, and will instead return nil.

Upvotes: 3

Dougui
Dougui

Reputation: 7232

You can do this :

Notification.find_by_id 7

It will return nil if there is no records with id 7.

Upvotes: 2

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