CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-3formsvalidation
Mike
Mike

Reputation: 335

How do I validate a non-model form in Rails 3?

Let's say I have a search form and I want to validate the length of the keyword. I want the form to highlight the invalid field (like model forms). I've looked everywhere and can't seem to find any useful information on validating non-model-backed forms in Rails 3. I've tried the validatable gem, but this doesn't seem to work with Rails 3:

undefined method `model_name' for Login:Class.

Any ideas?

Upvotes: 18

Views: 7457

Answers (2)

gertas
gertas

Reputation: 17145

With Rails 3 you can extend "plain old Ruby objects" with some ActiveModel extensions like Validations etc. ActiveRecord is extension of ActiveModel with DB support. Here is a very good Railscast describing it with easy example:

In Rails 3 the non-database functionality of Active Record is extracted out into Active Model. This allows you to cleanly add validations and other features to tableless models. http://railscasts.com/episodes/219-active-model

Upvotes: 20

fl00r
fl00r

Reputation: 83680

You can try to use tableless model. Check out here for more infomation: http://railscasts.com/episodes/193-tableless-model

Upvotes: 3

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