How to change built-in default date_select notice message for invalid date in Rails?

Question

I'm using the date_select method for my form in Rails.

Whenever I choose an invalid date such as February 30th or April 31st, I get a default notice message stating, "invalid date" which I believe is built-in.

How would I change this to something custom like "The date you have entered is invalid." ?

I'd like for this message to be consistent with the capitalization and punctuation in the rest of my app.

Answer 1

Rails raise an ArgumentError with hard core message 'invalid date' whenever convert time failed (extension Time-Zone and Time-Calculations)

But in your case, we don't need to intercept or override any code in models/controllers, just use a helper method to convert 'invalid date' message (or whatever messages you want) before they're rendered, right ?

# helper
def format_error(error)
 return ArgumentError.new(I18n.t 'date.invalid') if error.class == ArgumentError && error.message == 'invalid date'

 error
end

# view
<% interval.errors.full_messages.each do |message| %>
   <li><%= format_error(message) %></li>
<% end %>

By the way, what version of Rails are you using ? I use Rails 6 and whenever i pick wrong day it will be automatically converted to next valid day, for example: i pick 31/4 -> then it'll be saved as 1/5.