CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-4
user1175969
user1175969

Reputation: 570

Displaying only 1 error per field in a form

I have a model with email as one of its attributes. It has the following validation:

validates :email, presence: true, length: { maximum: 50 }, format: { with: VALID_EMAIL_REGEX }

When the user submits the form with an empty empty email, I get the following 2 errors:

How can I display only the first error message related to a field in such a scenario?

I'm retrieving the error messages associated with the object by doing:

@object.errors.full_messages

Upvotes: 0

Views: 877

Answers (1)

Mirza Memic
Mirza Memic

Reputation: 872

You can do that very easy with this line:

<%= @object.errors.full_messages.first if @object.errors.any? %>

Just replace with your object instance. If you want to use with just one field then there is this method

http://api.rubyonrails.org/classes/ActiveModel/Errors.html#method-i-full_messages_for:

object.errors.full_messages_for(:email)

This will get you specific error for single field

EDIT:

if you have a lot of fields:

<% @object.errors.each do |attr, msg| %>
  <%= "#{attr} #{msg}" if @object.errors[attr].first == msg %> 
<% end %>

Upvotes: 3

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