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copied!<p>According to the Rails Guides for i18n regarding <a href="http://guides.rubyonrails.org/i18n.html#translations-for-active-record-models" rel="nofollow">Error Message Scopes (5.1.1)</a> for Active Record validation error messages, what you're attempting to do should work:</p> <blockquote> <p>Consider a User model with a validation for the name attribute like this:</p> <pre><code>class User < ActiveRecord::Base validates :name, :presence => true end </code></pre> <p><em><...snip...></em></p> <p>When your models are additionally using inheritance then the messages are looked up in the inheritance chain.</p> <p>For example, you might have an Admin model inheriting from User:</p> <pre><code>class Admin < User validates :name, :presence => true end </code></pre> <p>Then Active Record will look for messages in this order:</p> <pre><code>activerecord.errors.models.admin.attributes.name.blank activerecord.errors.models.admin.blank activerecord.errors.models.user.attributes.name.blank activerecord.errors.models.user.blank activerecord.errors.messages.blank errors.attributes.name.blank errors.messages.blank </code></pre> <p>This way you can provide special translations for various error messages at different points in your models inheritance chain and in the attributes, models, or default scopes.</p> </blockquote> <p>So, in your case, assuming your classes look something like this:</p> <p><strong>app/models/user.rb</strong></p> <pre><code>User < ActiveRecord::Base validates :username, :format => {/regex/}, :message => :name_format end </code></pre> <p><strong>app/models/user_subclass.rb</strong></p> <pre><code>UserSubclass < User validates :username, :format => {/regex/}, :message => :name_format end </code></pre> <p>and your <strong>config/locales/en.yml</strong> looks something like:</p> <pre><code>en: activerecord: errors: models: user: attributes: username: name_format: 'has the way-wrong format, bro!' </code></pre> <p>then the message searching for a validation on <code>UserSubClass</code> should go:</p> <pre><code>activerecord.errors.models.user_sublcass.attributes.username.name_format # fail activerecord.errors.models.user_sublcass.name_format # fail activerecord.errors.models.user.attributes.username.name_format # success activerecord.errors.models.user.name_format # ... </code></pre> <p>Assuming that your model files and yaml files look similar to what's above, then the potential complication you mentioned may be the issue, but obviously I can't be certain.</p>

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