Record An Error Message
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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") rails error messages if name.nil? end # The following methods are needed to be minimally implemented
Rails Validation Message
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 rails custom validation 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
Activemodel Validations
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, full_messages, rails validates_presence_of 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 GitHub # File activemodel/lib/active_mode
(0) 1.1.6 (0) 1.2.0 (0) 1.2.6 (0) 2.0.0 (33) 2.0.3 (0) 2.1.0 (0) 2.2.1 (0) 2.3.2 (0) 2.3.8
Activerecord Errors
(0) 3.0.0 3.0.5 3.0.9 3.1.0 3.2.1 3.2.3 3.2.8 3.2.13 4.0.2
Rails Before_validation
4.1.8 4.2.1 4.2.7 What's this? Related methods Class methods (2) default_error_messages (<= v2.3.8) new (<= v2.3.8) Instance rails email validation methods (21) [] (<= v2.3.8) add (<= v2.3.8) add_on_blank (<= v2.3.8) add_on_boundary_breaking (<= v1.2.6) add_on_boundry_breaking (<= v1.2.6) add_on_empty (<= v2.3.8) add_to_base (<= v2.3.8) clear (<= v2.3.8) http://api.rubyonrails.org/classes/ActiveModel/Errors.html count (<= v2.3.8) each (<= v2.3.8) each_error (<= v2.3.8) each_full (<= v2.3.8) empty? (<= v2.3.8) full_messages (<= v2.3.8) generate_message (<= v2.3.8) invalid? (<= v2.3.8) length (<= v2.3.8) on (<= v2.3.8) on_base (<= v2.3.8) size (<= v2.3.8) to_xml (<= v2.3.8) = private = protected Method deprecated or moved This method is deprecated or moved on http://apidock.com/rails/ActiveRecord/Errors/full_messages the latest stable version. The last existing version (v2.3.8) is shown here. These similar methods exist in v4.2.7: ActiveModel::Errors#full_messages full_messages(options = {}) public Returns all the full error messages in an array. class Company < ActiveRecord::Base validates_presence_of :name, :address, :email validates_length_of :name, :in => 5..30 end company = Company.create(:address => '123 First St.') company.errors.full_messages # => ["Name is too short (minimum is 5 characters)", "Name can't be blank", "Address can't be blank"] Show source # File activerecord/lib/active_record/validations.rb, line 285 def full_messages(options = {}) @errors.values.inject([]) do |full_messages, errors| full_messages + errors.map { |error| error.full_message } end end Register or log in to add new notes. Welcome Register Projects Help About Blog APIdock release: IRON STEVE (1.4) If you have any comments, ideas or feedback, feel free to contact us at APIdock copyright Nodeta Oy 2008-2016 Flowdock - Team Inbox With Chat Flowdock is a collaboration tool for technical teams. Version control, project management, deployments and your group chat in one place.
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss http://stackoverflow.com/questions/11113394/how-do-i-capture-error-messages-from-activerecord-validations the workings 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 http://www.filemaker.com/help/13/fmp/en/html/scripts_ref1.36.15.html Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each error message other. Join them; it only takes a minute: Sign up How do I capture error messages from ActiveRecord validations? up vote 3 down vote favorite I'm creating a registration form using validation inside the User model such as validates_confirmation_of :password, :message = "Passwords do not match" validates_uniqueness_of :email, :message = "Email in use" and register looks like this record an error def register @user = User.new(params[:user]) if @user.save redirect_to(:action => 'login') else end end I just have no idea how to return these messages to the user once they trigger any of these validations. Any help would be greatly appreciated. ruby-on-rails share|improve this question asked Jun 20 '12 at 5:36 user827570 1921415 add a comment| 1 Answer 1 active oldest votes up vote 8 down vote accepted Well You dont have to explicitly do this If your validations fails they errors message is written into the the errors object for that object in your case @user so Check @user.errors.count() or @user.errors To display the error message on the page You could just iterate over the errors object Edited : <% @user.errors.full_messages.each do |message| %> <%= message %> <%end%> share|improve this answer edited Feb 20 '14 at 11:31 answered Jun 20 '12 at 5:44 Viren 3,46742161 works great thanks –user827570 Jun 20 '12 at 5:51 @user827570 You're welcome. 'Thanks' is a way too much, accepting an answer would be sufficie
Error Capture [