Rails 3 Error Message Helper
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(0) 1.1.1 (0) 1.1.6 (0) 1.2.0 (9) 1.2.6 (2) 2.0.0 (13) 2.0.3 (0) 2.1.0 (1) 2.2.1 (0) 2.3.2 (0) 2.3.8 (0) 3.0.0 3.0.5 rails error_messages_for 3.0.9 3.1.0 3.2.1 3.2.3 3.2.8 3.2.13 4.0.2 4.1.8 4.2.1 4.2.7 What's
Rails Custom Error Messages
this? Related methods Instance methods (6) all_input_tags (<= v2.3.8) default_input_block (<= v2.3.8) error_message_on (<= v2.3.8) error_messages_for (<=
Error_messages_for Rails 4
v2.3.8) form (<= v2.3.8) input (<= v2.3.8) = private = protected Method deprecated or moved This method is deprecated or moved on the latest stable version. The last existing
Rails Error Messages In View
version (v2.3.8) is shown here. error_messages_for(*params) public Returns a string with a DIV containing all of the error messages for the objects located as instance variables by the names given. If more than one object is specified, the errors for the objects are displayed in the order that the object names are provided. This DIV can rails validation errors be tailored by the following options: :header_tag - Used for the header of the error div (default: "h2"). :id - The id of the error div (default: "errorExplanation"). :class - The class of the error div (default: "errorExplanation"). :object - The object (or array of objects) for which to display errors, if you need to escape the instance variable convention. :object_name - The object name to use in the header, or any text that you prefer. If :object_name is not set, the name of the first object will be used. :header_message - The message in the header of the error div. Pass nil or an empty string to avoid the header message altogether. (Default: "X errors prohibited this object from being saved"). :message - The explanation message after the header message and before the error list. Pass nil or an empty string to avoid the explanation message altogether. (Default: "There were problems with the following fields:"). To specify the display for one object, you simply provide its name a
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 rails form errors inline Learn more about Stack Overflow the company Business Learn more about hiring developers rails validation error message not displaying or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack rails 4 custom error messages Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Fully custom validation error message with Rails up http://apidock.com/rails/ActionView/Helpers/ActiveRecordHelper/error_messages_for vote 191 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 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 http://stackoverflow.com/questions/808547/fully-custom-validation-error-message-with-rails ? 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 33.9k39153210 add a comment| 10 Answers 10 active oldest votes up vote 334 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 answer edited Oct 17 '12 at 16:30 answered May 18 '10 at 16:43 graywh 6,30021923 16 If you are using mongoid, replace activerecord: with mongoid: –Intentss Nov 6 '11 at 14:07 83 @graywh: Where should questions about an answer be posted, if not in the comments? Here's the I18n guide: guides.rubyonrails.org/i
helpers. A minimal implementation could be: class Person # Required dependency for ActiveModel::Errors extend ActiveModel::Naming def initialize @errors = ActiveModel::Errors.new(self) end attr_accessor :name attr_reader :errors def validate! errors.add(:name, :blank, message: "cannot be nil") http://api.rubyonrails.org/classes/ActiveModel/Errors.html if name.nil? end # The following methods are 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 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 error message not need to implement the last two. Likewise, using ActiveModel::Validations will handle the validation related methods for 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, custom error messages 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_default_array({}) end Instance Public methods [](attribute) Link When passed a symbol or a name of a method, returns an array of errors for the method. person.errors[:name] # => ["cannot be nil"] person.errors['name'] # => ["cannot be nil"] Note that, if you try to get errors of an attribute which has no errors associated with it, this method will instantiate an empty error list for it and keys will return an array of error keys which includes this attribute. person.errors.keys # => [] person.errors[:name] # => [] person.errors.keys # => [:name] Source: show | on Git