Custom Error Messages Rails 3
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other. Join them; it only takes a minute: Sign up Fully custom validation error message with Rails up vote 190 down vote favorite 108 Using Rails I'm trying to get an error message like "The song field can't be empty" on save. Doing the following: validates_presence_of :song_rep_xyz, :message => "can't be empty" ... only displays "Song Rep XYW can't rails error messages without attribute name be empty", which is not good because the title of the field is not user friendly. How can I change the title of the field itself ? I could change the actual name of the field in the database, but I have multiple "song" fields and I do need to have specific field names. I don't want to hack around rails' validation process and I feel there should be a way of fixing that. ruby-on-rails share|improve this question edited Jun 14 '10 at 10:08 asked Apr 30 '09 at 19:05 marcgg 33.7k39153210 add a comment| 10 Answers 10 active oldest votes up vote 332 down vote accepted Now, the accepted way to set the humanized names and custom error messages is to use locales. # config/locales/en.yml en: activerecord: attributes: user: email: "E-mail address" errors: models: user: attributes: email: blank: "is required" Now the humanized name and the presence validation message for the "email" attribute have been changed. Validation messages can be set for a specific model+attribute, model, attribute, or globally. share|improve this
Validations Active Record Callbacks Active Record Associations Active Record Query Interface Views Layouts and Rendering in Rails Action View Form Helpers Controllers rails error messages for nested models Action Controller Overview Rails Routing from the Outside In Digging Deeper
Rails Error Messages In View
Active Support Core Extensions Rails Internationalization API Action Mailer Basics Active Job Basics Testing Rails Applications Securing
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Rails Applications Debugging Rails Applications Configuring Rails Applications Rails Command Line Tools and Rake Tasks Asset Pipeline Working with JavaScript in Rails Autoloading and Reloading Constants Caching with http://stackoverflow.com/questions/808547/fully-custom-validation-error-message-with-rails Rails: An Overview Using Rails for API-only Applications Action Cable Overview Extending Rails Rails on Rack Creating and Customizing Rails Generators Contributing to Ruby on Rails Contributing to Ruby on Rails API Documentation Guidelines Ruby on Rails Guides Guidelines Maintenance Policy Maintenance Policy Release Notes Upgrading Ruby on Rails Ruby on Rails 5.0 Release Notes Ruby on http://guides.rubyonrails.org/active_record_validations.html Rails 4.2 Release Notes Ruby on Rails 4.1 Release Notes Ruby on Rails 4.0 Release Notes Ruby on Rails 3.2 Release Notes Ruby on Rails 3.1 Release Notes Ruby on Rails 3.0 Release Notes Ruby on Rails 2.3 Release Notes Ruby on Rails 2.2 Release Notes Contribute Credits Guides Index Getting Started with Rails Active Record Basics Active Record Migrations Active Record Validations Active Record Callbacks Active Record Associations Active Record Query Interface Layouts and Rendering in Rails Action View Form Helpers Action Controller Overview Rails Routing from the Outside In Active Support Core Extensions Rails Internationalization API Action Mailer Basics Active Job Basics Testing Rails Applications Securing Rails Applications Debugging Rails Applications Configuring Rails Applications Rails Command Line Tools and Rake Tasks Asset Pipeline Working with JavaScript in Rails Autoloading and Reloading Constants Caching with Rails: An Overview Using Rails for API-only Applications Action Cable Overview Rails on Rack Creating and Customizing Rails Generators Contributing to Ruby on Rails API Documentation Guidelines Ruby on Rails Guid
Record Validations and Callbacks Active Record Associations Active Record Query Interface Views Layouts and Rendering in Rails Action View Form Helpers Controllers Action Controller Overview Rails Routing from the Outside In Digging http://guides.rubyonrails.org/v3.2.13/active_record_validations_callbacks.html Deeper Active Support Core Extensions Rails Internationalization API Securing Rails Applications Debugging Rails http://lindsaar.net/2008/4/22/tip-14-custom-error-messages-in-validations Applications Performance Testing Rails Applications Configuring Rails Applications Rails Command Line Tools and Rake Tasks Asset Pipeline Extending Rails Rails on Rack Creating and Customizing Rails Generators Contributing to Ruby on Rails Contributing to Ruby on Rails API Documentation Guidelines Ruby on Rails Guides Guidelines Release Notes Ruby on Rails 3.2 Release error message Notes Ruby on Rails 3.1 Release Notes Ruby on Rails 3.0 Release Notes Ruby on Rails 2.3 Release Notes Ruby on Rails 2.2 Release Notes Contribute Credits Active Record Validations and Callbacks This guide teaches you how to hook into the life cycle of your Active Record objects. You will learn how to validate the state of objects before they go into the database, and how rails error messages to perform custom operations at certain points in the object life cycle. After reading this guide and trying out the presented concepts, we hope that you'll be able to: Understand the life cycle of Active Record objects Use the built-in Active Record validation helpers Create your own custom validation methods Work with the error messages generated by the validation process Create callback methods that respond to events in the object life cycle Create special classes that encapsulate common behavior for your callbacks Create Observers that respond to life cycle events outside of the original class Chapters The Object Life CycleValidations OverviewWhy Use Validations? When Does Validation Happen? Skipping Validations valid? and invalid? errors[]Validation Helpersacceptance validates_associated confirmation exclusion format inclusion length numericality presence uniqueness validates_with validates_eachCommon Validation Options:allow_nil :allow_blank :message :onConditional ValidationUsing a Symbol with :if and :unless Using a String with :if and :unless Using a Proc with :if and :unless Grouping conditional validationsPerforming Custom ValidationsCustom Validators Custom MethodsWorking with Validation Errorserrors errors[] errors.add errors[:base] errors.clear errors.sizeDisplaying Validation Errors in the Viewerror_messages and error_messages_for Customizing the Error Messages CSS Customizing the Error Messages HTMLCallbacks OverviewCallback RegistrationAvailable CallbacksCreating an Object Updating an Object Destroying an Object after_in
you have a model with a field called ‘country_iso' which specifies the ISO value of the country the person belongs to. Database design concerns aside (you should really have it as country_id and a separate country_iso field) you might be stuck with this situation from a legacy database (like I was). As this is a required field, you set the following in your model: 1 2 3 class User < ActiveRecord::Base validates_presence_of :country_iso end So, you go ahead and make a form which presents the country as just a select box, because you don't want your users to worry about if Thailand is TH or TL, but then you don't specify a country and the error message comes back to the user in nice big letters: Country Iso can't be blank Ugh! Aside from the fact that Iso is capitalized badly, how many of YOUR users know that it stands for "International Standards Organization" and that a Country ISO is usually a two letter representation of the country? I'd wager about 3 of them have some idea :) So you go in and change the validates line to: 1 2 3 class User < ActiveRecord::Base validates_presence_of :country_iso, :message => "Country can't be blank" end Do your test again, and now you get: Country Iso Country can't be blank Nup.. that'd didn't really fix it. Fortunately, the fix is easy: 1 2 3 4 5 class User < ActiveRecord::Base validate do |user| user.errors.add_to_base("Country can't be blank") if user.country_iso.blank? end end Now, reload your view and you'll get: Country can't be blank Much better! blogLater Mikel Tweeting... Feeding... Who is this guy? Ruby on Rails Tips DECCA Driving Day Latest posts Rails Security Alert Encrypting Another Partition Using FileVault 2 on OSX Lion Installing Home Folder on Second Drive on OSX Lion undefined local variable or method `version_requirements' A New World of Resources Rails Static Pages Twitter Replacing Rails? So? Engine Yard Cloud Backups Generating Zero Length Backups Our Rails Rumble Entry - StillAlive.com Renaming a controller and redirection in Rails 3 Updating RailsPlugins.org to Rails 3 - Part 1 A new protocol for social interaction What is a distributed social network? Bundler and Public Git Sources Getting Heroku, memcached and Rails 3 working Why Bundler? Rails Commit Access Introducing TellThemWhen rake RSpec & Cucumber uninitialized constant Rails::Boot::Bundler This Relationship is Worth Nothing Thank YOU... Inline Attachments for ActionMailer Upgrading RailsPlugins.org to Rails 3 - Part 1 Stripping dollar signs and commas from a string Getting Rails 3 Edge with jQuery, RSpec and Cucumber using RVM Action Mailer