Error Messages For Rails 3
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helpers. A minimal implementation could be: class Person # Required dependency for ActiveModel::Errors extend ActiveModel::Naming def initialize rails 3 form error messages @errors = ActiveModel::Errors.new(self) end attr_accessor :name attr_reader :errors def validate!
Rails 3 Custom Error Messages
errors.add(:name, :blank, message: "cannot be nil") if name.nil? end # The following methods are
Rails 3 Validation Error Messages
needed to be minimally implemented def read_attribute_for_validation(attr) send(attr) end def self.human_attribute_name(attr, options = {}) attr end def self.lookup_ancestors [self] end end The last three
Rails Error Messages Without Attribute Name
methods are required in your object for Errors to be able to generate error messages correctly and also handle multiple languages. Of course, if you extend your object with ActiveModel::Translation you will not need to implement the last two. Likewise, using ActiveModel::Validations will handle the validation related methods for rails error messages for nested models you. The above allows you to do: person = Person.new person.validate! # => ["cannot be nil"] person.errors.full_messages # => ["name cannot be nil"] # etc.. Methods # [], []= A add, add_on_blank, add_on_empty, added?, as_json B blank? C clear, count D delete E each, empty? F full_message, full_messages, full_messages_for G generate_message, get H has_key? I include? K key?, keys M marshal_dump, marshal_load N new S set, size T to_a, to_hash, to_xml V values Included Modules Enumerable Constants CALLBACKS_OPTIONS = [:if, :unless, :on, :allow_nil, :allow_blank, :strict] MESSAGE_OPTIONS = [:message] Attributes [R] details [R] messages Class Public methods new(base) Link Pass in the instance of the object that is using the errors object. class Person def initialize @errors = ActiveModel::Errors.new(self) end end Source: show | on GitHub # File activemodel/lib/active_model/errors.rb, line 72 def initialize(base) @base = base @messages = apply_default_array({}) @details = apply_defa
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about rails error messages in view Stack Overflow the company Business Learn more about hiring developers or posting ads with rails error messages not displaying us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is rails error messages to sentence a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up form_for error messages in Ruby on Rails up vote 8 down vote favorite 2 http://api.rubyonrails.org/classes/ActiveModel/Errors.html What is the preferred way to display validation error messages using form_for in Rails 4? <%= form_for @post do |f| %> ... <% end %> ruby-on-rails ruby ruby-on-rails-4 share|improve this question edited Sep 2 at 12:21 asked Jul 15 '13 at 19:18 Kyle Decot 5,5081784178 stackoverflow.com/questions/3873190/… –Sony Mathew Mar 4 at 10:56 add a comment| 4 Answers 4 active oldest votes up vote 5 down vote accepted Same as http://stackoverflow.com/questions/17662089/form-for-error-messages-in-ruby-on-rails Rails 3 -- see f.error_messages in Rails 3.0 or http://asciicasts.com/episodes/211-validations-in-rails-3 for many different possibilities. My personal preference is to use simple_form and have it put the error next to the input. share|improve this answer answered Jul 15 '13 at 20:41 Jesse Wolgamott 36k36194 add a comment| up vote 20 down vote This is how I am displaying them for my form object called @location: <% if @location.errors.any? %>
- <% @location.errors.full_messages.each do |msg| %>
- <%= msg %> <% end %> <% end %> Note: put the above code after the <%= form_for @location do |f| %> line share|improve this answer answered Nov 2 '13 at 23:42 Danny 2,1392132 add a comment| up vote 6 down vote My preferred way of doing this and keeping the code simple and DRY, is the following: Create a new helper inside of application_helper.rb # Displays object errors def form_errors_for(object=nil) render('shared/form_errors', object: object) unless object.blank? end Create a new shared partial in shared/_form_errors.html.erb <% content_for :form_errors do %>
<%= pluralize(object.errors.count, "error") %> prevented the form from being saved:
- <% object.errors.full_messages.each do |message| %>
- <%= message %> <% end %> <% end %> Edit your application.html.erb file to include the errors where you want them: <%= yield :form_errors %> Final
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings http://stackoverflow.com/questions/4527708/rails-3-full-error-messages-format and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it error messages only takes a minute: Sign up Rails 3 full error messages format up vote 12 down vote favorite 6 Since in Rails 3 form.error_messages is deprecated I'm using a partial in which I iterate over full_messages and structure my html like this: <% model.errors.full_messages.each do |msg| %>
<%= msg %>
<% end %> However the app's default locale is not rails error messages English and in my language the structure of the full_messages is kinda unnatural: {{attribute}} {{message}} I saw from the source of generate_full_messages that I can localize the format and so in my locale's yml file (bg.yml) I added this: bg: activerecord: errors: full_messages: format: "[...]" However the format of the validation errors stays the same. ruby-on-rails share|improve this question asked Dec 24 '10 at 18:10 zbrox 83821226 What format do you want? –Zabba Dec 24 '10 at 21:40 The specifics is not important. I want it to start with a specific word then {{attribute}} {{message}} because without this word it sounds awkward in my language. –zbrox Jan 4 '11 at 12:44 add a comment| 3 Answers 3 active oldest votes up vote 7 down vote accepted don't know if it can help, but a locale file for Bulgarian is available on Github. you may also try this (should work according to rails guides): bg: errors: format: "%{message}" messages: &error_messages empty: "Something something %{attribute} something something" this blog post and this stack overflow issue als
- <%= message %> <% end %> <% end %> Edit your application.html.erb file to include the errors where you want them: <%= yield :form_errors %> Final