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Ruby Build a Todo List Application with Rails 4 Build a Todo List Application with Rails 4 Adding Validations to Todo Items

Posted by spalak
spalak
12,151 Points

Where in the code are we creating the error messages?

I can follow along with the video and get the error messages to show up at the appropriate times. But I can't figure out where in the project code we've specified what the error messages is (even using a Cmd+Shift+F). For example, where do we say the message for having less than one character in content should be "Content is too short (minimum is 2 characters)"?

1 Answer

Pedro Garcia
Pedro Garcia
8,426 Points
Pedro Garcia
Pedro Garcia
8,426 Points

Hi, The error messages can be edited/added in your model, as part of the validation. Lets say you have a User Model, and each user needs a username with a max length of 20 characters. So you validation should look something like this:

class User < ActiveRecord::Base
   validates :username, presence: true,
                        length: { maximum: 20, message: "The username can have a maximum of 20 characters" }
end

Each validation can have a custom error message. Hope this helps. Sorry about my english.

Pete