similar to: validates_numercality_of with allow_nil.

Is there a way to use validates_numericality_of and still allow null values? I have a model with some optional values that can be nil, but if they''re present, they must be numbers. Will I need to construct a custom valiation for this, or is there some method built in? Seems like it would be a common enough need. Jeff -- Posted via http://www.ruby-forum.com/.

I have this in a model: class GenreBadge < ActiveRecord::Base belongs_to :game, counter_cache: :genre_badges_count, touch: true belongs_to :genre validates :game_id, uniqueness: {scope: :genre_id}, allow_blank: true end When I get one existing genre badge genre_badge = game.genre_badges.first genre_badge.game_id = nil genre_badge.save! It creates an validation exception:

I think I must be doing something wrong... when a form returns params to the controller, empty fields appear to be returned as blank, not nil. so what''s the point of an :allow_nil=>true setting on a validation? it fails because blank is not the same as nil. i would expect either returned empty fields to be nil, or :allow_nil to really be :allow_blank. otherwise i have to do a search

i have a model with this: file_column :image validates_file_format_of :image, :in => ["gif", "png", "jpg"] If inthe form the user not insert the image i receive an error. If i remove: validates_file_format_of :image, :in => ["gif", "png", "jpg"] it works. Is possible do the validation only when user insert the image in form? i

It seems that the validations for: greater_than greater_than_or_equal_to less_than less_than_or_equal_to equal_to odd even Simply do not work (Rails 2.0.2). I''ve tried every combination I can think of and these never seem to fire. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails:

Hello, I''m trying to cut down the errors if the guy already getting the empty nickname, so he doesn''t get anything about the nickname is short. validates_presence_of :nickname This below is not working ? validates_length_of :nickname, :within => 4..40, :if => Proc.new { |user| user.nickname.length > 1 } nor this one below? validates_length_of :nickname, :within

Hi, there. I have two validations in the model: validates_numericality_of :value, :only_integer=>true, :allow_blank=>true validates_size_of :value, :is=>9, :message=>"must be 5-digit number", :if=>Proc.new{|u| u.value.is_a?(Numeric)} They work as expected except when the :value is character/string like "a" "abc", the second validation will also output

I have this rake taks: CUSTOM_MONTHS = [nil, "GEN", "FEB", "MAR", "APR", "MAG", "GIU", "LUG", "AGO", "SET", "OTT", "NOV", "DIC"] def parse_date_string(date_string) begin day, month, year = date_string.split("-") Time.mktime(year, CUSTOM_MONTHS.index(month),

Hi everyone, I just need a quick help :) What is the best way to write some code in :presence option? I have a Question model and one of the fields is question_type: - example question - static question Each question has alternatives, and each of them has scores What I want is to validate the presence of :score, but when its only on the static question. I dont want to validate the presence

Hello guys, I''m trying to validate the input of an integer from a form, here is a bit of code: This is the definition of the offending column in the migration: t.column :position, :integer, :default => 0, :limit => 3, :null => false And here is how I try to validate it inside de model: validates_length_of :position, :within => 1..3 And this is the exception I get when I

How would I use validations to ensure I either received a blank value or a ten digit number? If I set validates_length_of :field, :in => 0..10 then that would allow any value in-between. The allow_nil => true option does not seem to work. I''ve also tried using this with some combination of validates_numericality_of but cannot get it to work. Any help would be greatly

Is trhere any way how to support allow empty? Rails prefer empty string than null for database and then validations with allow_nil fails. -- Posted via http://www.ruby-forum.com/.

I would like to validate a number within a certain range. To first test that a entry is a valid number i use validates_numericality_of :my_number, :message =>''sorry, not a number'' to test if the number is within a certain range i use validates_inclusion of :my_number, :in => min..max, message => ''outside range!'' If the numericality test fails, I

As far as I can tell "numericality" is not a word. Maybe this method should be renamed. -- R. Mark Volkmann Partner, Object Computing, Inc.

Hi, What is the simplest way to validate a positive integer? validates_numericality_of :foo, :integer_only => true how do I add the positive part? Do I need another validation statement for pattern matching or do I have to write a validate() funciton for my model? Thanks, Peter

I''m using Rails 2.0.2 and I have been trying to take advantage of the "validates_numericality_of" with the ":greater_than" option with something like this: validates_numericality_of :users, :greater_than => 0, :only_integer => true, :allow_nil => true, :message => "The number of allowed users must be a whole number greater than zero." But this

I''m having a problem, ''cause I wrote the following line in my model "Hi": [code] validates_numericality_of :phone, :only_integer => true, :allow_blank => false, :message => "must be a number" [/code] And in my "new" view, I put: [code] <%= error_messages_for :oi, :header_message => "Erro ao cadastrar

All, I have a field that I''m validating with validates_numericality_of on as well as validates_inclusion_of, like so: validates_numericality_of :number_of_owners, :only_integer => true, :message => ''must be a whole number'' validates_inclusion_of :number_of_owners, :in => 1..3,

I have a situation in which I want to validate a number is not zero. Both positive and negative values are acceptable, just not zero. validates_numericality_of has an :equal_to attribute, but I don''t see a :not_equal_to. I have not yet been able to find anyone who has discussed this. I did find information about custom validators, so I am now using a custom validator to check the field

I have an address model and am doing some validations. One of them seems to ignore :allow_nil => true. If I leave the phone input blank, I get it back with a "too short" error. Here''s the relevant parts of the model: 1. class Address < ActiveRecord::Base 2. 3. validates_length_of :phone, :in => 7..10, :allow_nil => true 4. 5. before_validation