Rails 3 - Make text field accept only numeric values

ruby-on-rails-3 validation form-helpers
Angelo picture Angelo · Dec 12, 2011 · Viewed 28k times · Source

How do I make a text field accept only numeric values? If I press a letter or a symbol, the text field should not be filled, it should only allow numbers.

Is there a rails way to do this?

Answer

Thong Kuah picture Thong Kuah · Dec 12, 2011

Use number_field_tag, this will generate a HTML5 number field

http://apidock.com/rails/ActionView/Helpers/FormTagHelper/number_field_tag

Related questions

Ruby on Rails Callback, what is difference between :before_save and :before_create?

Could you explain in detail what the :before_save and :before_create Ruby on Rails callbacks are, and what they have to do with Rails validations? Does validation occur after :before_save or :before_create?

Read More
Validate uniqueness of multiple columns

Is there a rails-way way to validate that an actual record is unique and not just a column? For example, a friendship model / table should not be able to have multiple identical records like: user_id: 10 | friend_id: 20 user_id: 10 | …

Read More
Rails - Validate Presence Of Association?

I have a model A that has a "has_many" association to another model B. I have a business requirement that an insert into A requires at least 1 associated record to B. Is there a method I can call to …

Read More