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They do that by calling the human_name method (for model names) and human_attribute_name (for attributes). Moreover, from the architectural standpoint, locale is usually hierarchically above the other parts of the application domain: and URLs should reflect this. message end as_json(options=nil) Link Returns a Hash that can be used as the JSON representation for this object. You can still use the :message option to specify an error message. have a peek at this web-site

This work is licensed under a Creative Commons Attribution-Share Alike 3.0 License "Rails", "Ruby on Rails", and the Rails logo are trademarks of David Heinemeier Hansson. This option will let validation pass if the attribute's value is blank?, like nil or an empty string for example. You can install it as a plugin or as a Gem. 8.1 Installing as a plugin $ rails plugin install git://github.com/joelmoss/dynamic_form.git 8.2 Installing as a Gem Add this line in your Then you'd set the locale to this value. 3 Internationalizing your Application OK!

Rails Custom Validation Error Message

You signed in with another tab or window. The size helper is an alias for length. 3.8 numericality This helper validates that your attributes have only numeric values. destroy destroy_all increment! Note that each associated object will contain its own errors collection; errors do not bubble up to the calling model. 3.3 confirmation You should use this helper when you have two

What does the word "most" mean? Now that we have our custom validator we can update the validator in the “User” model to use it. /app/models/user.rb class User < ActiveRecord::Base validates :email, :presence => true, :uniqueness => class Coffee < ActiveRecord::Base validates :size, :inclusion => { :in => %w(small medium large), :message => "%{value} is not a valid size" } end The inclusion helper has an option :in Rails Validation Message Without Field Name All rights reserved.

Bypassing them without understanding the potential implications may lead to invalid data. If there are no errors related to the attribute, it returns an empty array. Additionally, database-level validations can safely handle some things (such as uniqueness in heavily-used tables) that can be difficult to implement otherwise. Just uncomment and edit the specific lines. # The internationalization framework can be changed # to have another default locale (standard is :en) or more load paths. # All files from

class User < ActiveRecord::Base validates :login, :email, :presence => true before_create do |user| user.name = user.login.capitalize if user.name.blank? Unknown Validator: 'messagevalidator' You can do anything you like to check for valid data within the block. While there are places where it will be appropriate to supply literal labels, this option should be reserved for specific places where the context requires a different label. You may, however, use any of various plugins and extensions available, which add additional functionality or features.

Rails 4 Validates Presence Message

end end end The macro-style class methods can also receive a block. You'd typically put this code somewhere in config/initializers. Rails Custom Validation Error Message In our example, a user's posts should be destroyed if the user is destroyed. Rails 4 Validation Error Message That bit of weirdness is there to maintain some internal compatibility for the benefit of plugins that were written for older versions of Rails.

Another example where the default behaviour is less desirable is the Rails TranslationHelper which provides the method #t (as well as #translate). http://peakappcare.com/error-message/rails-error-message-without-field-name.php Doing the following: validates_presence_of :song_rep_xyz, :message => "can't be empty" ... Assume we've developed the "canonical" Rails application, a blogging engine. Of course, there's a great chance that somebody already did all the work by translating Rails's defaults for your locale. Rails Validate Message

class Order < ActiveRecord::Base validates :card_number, :presence => true, :if => :paid_with_card? class User < ActiveRecord::Base HUMANIZED_ATTRIBUTES = { :email => "E-mail address" } def self.human_attribute_name(attr) HUMANIZED_ATTRIBUTES[attr.to_sym] || super end end The above code is from here share|improve this answer edited May 1 This plugin gives you the option to not have your custom validation error message prefixed with the attribute name. http://peakappcare.com/error-message/rails-error-message-without-attribute.php end end I found this here.

For that reason the Rails I18n API focuses on: providing support for English and similar languages out of the box making it easy to customize and extend everything for other languages Rails Validation Error Message Not Displaying See date.month_names for translations. Of course, if you extend your object with ActiveModel::Translation you will not need to implement the last two.

Rails contains infrastructure for "centralizing dynamic decisions about the URLs" in its ApplicationController#default_url_options, which is useful precisely in this scenario: it enables us to set "defaults" for url_for and helper methods

How do I overwrite the default message on the validations? You may skip the next section and head over to the Internationalize your application section, if you want to try things out by manually placing the locale in the URL and class Person < ActiveRecord::Base validates :surname, :presence => true, :if => "name.nil?" end 5.3 Using a Proc with :if and :unless Finally, it's possible to associate :if and :unless with a Rails Validation Change Attribute Name You can supply the proper label text on your own (using the human_attribute_name method).

class Person < ActiveRecord::Base validates :name, :presence => true, :length => { :minimum => 3 } end person = Person.new(:name => "John Doe") person.valid? # => true person.errors[:name] # => [] Practical Rails Plugins shows you how to capitalize upon the wide variety of plugins at your disposal by guiding you through their integration into a number of interesting projects. instance method to determine whether an object is already in the database or not. have a peek here Rails makes them easy to use, provides built-in helpers for common needs, and allows you to create your own validation methods as well. 2.2 When Does Validation Happen?

By default, it will match an optional sign followed by an integral or floating point number. Returns the deleted messages.