I would like to validate the uniqueness of my model name without being case sensitive. I tried many ways but doesn't seem to work when it's a hash with internationalization
For example, for name column => {"en"=>"Boston", "fr"=>"Boston"} I don't want to accept "boston" as correct.
Here's my current attempt at validating my locales:
I18n.available_locales.each do |locale|
validates :description, translation_uniqueness: { locale: locale }
validates :name, translation_uniqueness: { locale: locale, case_sensitive: false }
end
But case_sensitive doesn't work. How can I use case_sensitive with locales?
Related
I have one model validation like below
validates :value, presence: true, allow_blank: false, uniqueness: { scope: [:account_id, :provider] }
I want to add one more condition of case_sensitive inside uniqueness like below
validates :value, presence: true, allow_blank: false, uniqueness: { scope: [:account_id, :provider], case_sensitive: :is_email? }
def is_email?
provider != email
end
In short, it should not validate case_sensitive when email provider is not email, But currently, it's not working it is expecting true or false only not any method or any conditions.
How can I achieve this in rails? I already wrote custom validation because it was not working.
UPDATE
if I add another validation like below
validates_uniqueness_of :value, case_sensitive: false, if: -> { provider == 'email' }
It's giving me same error for twice :value=>["has already been taken", "has already been taken"]
In the specific case of case_sensitive, the value passed to the option will always be compared against its truthy value.
As you can see in the class UniquenessValidator, when the relation is built, it uses the options passed to check if the value of case_sensitive is truthy (not false nor nil), if so, it takes the elsif branch of the condition:
def build_relation(klass, attribute, value)
...
if !options.key?(:case_sensitive) || bind.nil?
klass.connection.default_uniqueness_comparison(attr, bind, klass)
elsif options[:case_sensitive] # <--------------------------------- sadly, this returns true for :is_email?
klass.connection.case_sensitive_comparison(attr, bind)
else
# will use SQL LOWER function before comparison, unless it detects a case insensitive collation
klass.connection.case_insensitive_comparison(attr, bind)
end
...
end
As you're passing the method name is_email? to case_sensitive, which is in fact a symbol, the condition takes that branch.
tl;dr;. You must always use true or false with case_sensitive.
I want to validate a Nickname but I have a lot of format like this:
validates :nickname, presence: true, unniqueness: true, format: { with: /\A[a-zA-Z0-9]+\Z/ }, format: { without: /\s/ }, format: { without: /[!-\/\#\^\~\`\(\)\[\]\>\<\=]/ }
warning: key :format is duplicated and overwritten on line 38
warning: key :format is duplicated and overwritten on line 38
Obviously down't work in this way, how can I solve it? Thank you
Your first regex covers everything:
format: { with: /\A[a-zA-Z0-9]+\Z/ }
but you probably want \z instead of \Z to avoid issues with trailing newlines. Anything that matches /\A[a-zA-Z0-9]+\z/ won't contain any space characters so the /\s/ test is already covered, similarly for the punctuation test.
Also, you've misspelled uniqueness as unniqueness so you'll want to fix that too.
That would leave you with just:
validates :nickname, presence: true, uniqueness: true, format: { with: /\A[a-zA-Z0-9]+\Z/ }
If you really did have multiple regexes to test then you could do it in a custom method:
validate :nickname_format
def nickname_format
return if(!nickname) # The `presence: true` takes care of complaining about this.
if(nickname ~! ...)
errors.add(:nickname, 'blah blah')
elsif(...)
...
end
end
so that you could check each regex individually.
I am trying to validate the entry a user makes in an amount field.
The field is amount_money
This field is a string which is validated on form submission
monetize :amount, :as => :amount_money
validates :amount, numericality: {only_integer: true}
validates :amount_money, numericality: {greater_than_or_equal_to: 0}
validate :amount_money_within_limit
validate :is_a_valid_number
I want to ensure there are no letters or symbols and that the amount is in an acceptable range.
the code to do this is
def amount_money_within_limit
if amount_money && amount_money.cents > 10_000_00
errors.add(:amount_money, 'cannot exceed $10,000.')
end
if amount_money && amount_money.cents < 1_00
errors.add(:amount_money, 'Problem with Amount')
end
end
this works great for input numbers, of numbers and letters, of letters, of special characters but
If I try Bob - the validation kicks in
but if I try BBob - the validation is bypassed.
If the input contains 2 Capital letters next to each other - it fails.
I've tried a downcase - but that doesn't suit as the field is monetized (money gem) - and the downcase screws up if there is valid input.
If the input to the field contains two uppercase letters - all the validations are bypassed So something like AA is not caught by any on the above validations
Why don't you use regular expressions? Something like this:
def is_a_valid_number? amount_money
amount_money =~ /\d+/
end
It seems you have put 1 validation on the wrong field, you should've put validations only on amount field (your real db field), and not on the amount_money which is automagical field from rails-money gem. I'll apply their documentation on numerical validations to your case:
monetize :amount,
:numericality => {
:only_integer => true,
:greater_than_or_equal_to => 1_00,
:less_than_or_equal_to => 10_000_00
}
You won't need any other custom validations with this setup.
I'm creating rails API and want to want to add validation for countries field which contains an ISO 3166-1 code on model level.
For example if use gem carmen-rails, it provides only helper country_select. Is that way to use validation for accordance country for ISO 3166-1 code in the model?
Here is the newest syntax for validation with the countries gem:
validates :country, inclusion: { in: ISO3166::Country.all.map(&:alpha2) }
You are just trying to validate that the country code entered is appropriate? this should work with carmen
validates :country, inclusion: { in: Carmen::Country.all.map(&:code) }
But if this is all you need seems like the countries gem might work well too. With countries you could do
validates :country, inclusion: { in: Country.all.map(&:pop) }
Or
validate :country_is_iso_compliant
def country_is_iso_compliant
errors.add(:country, "must be 2 characters (ISO 3166-1).") unless Country[country]
end
Update
For Region and State you can validate all 3 at the same time like this.
validates :country, :region, :state, presence: true
validate :location
def location
current_country = Country[country]
if current_country
#valid regions would be something Like "Europe" or "Americas" or "Africa" etc.
errors.add(:region, "incorrect region for country #{current_country.name}.") unless current_country.region == region
#this will work for short codes like "CA" or "01" etc.
#for named states use current_country.states.map{ |k,v| v["name"}.include?(state)
#which would work for "California" Or "Lusaka"(it's in Zambia learn something new every day)
errors.add(:state, "incorrect state for country #{current_country.name}.") unless current_country.states.keys.include?(state)
else
errors.add(:country, "must be a 2 character country representation (ISO 3166-1).")
end
end
Although Region seems unnecessary as you could imply this from the country like
before_validation {|record| record.region = Country[country].region if Country[country]}
Create a Fixture with the data provided by Wikipedia on ISO-3166-1 and validate the country based on that data.
Also you can create an auto-complete feature easing the input. You can look at the auto-complete provided here for guidance.
Making a simple Ruby on Rails app as practise that requires a user to sign up.
Everything works well until I implement regex validation on a 'profile_name' field
Here's my 'user' model:
validates :profile_name, presence: true,
uniqueness: true,
format: {
with: /^a-zA-Z0-9_-$/,
message: 'Must be formatted correctly.'
}
And yet the profile name 'jon' simply refuses to pass. Where could this error be coming from, other than my 'user' model?
You need to add brackets around the ranges so that the regex matches "any of the range" rather than "all of the range in order". Put a + on the end to allow it to match anything in the range more than once.
You also need to change your beginning and ending of lines to beginning and ending of strings!
validates :profile_name, presence: true,
uniqueness: true,
format: {
with: /\A[a-zA-Z0-9_-]+\z/,
message: 'Must be formatted correctly.'
}
Details:
\A # Beginning of a string (not a line!)
\z # End of a string
[...] # match anything within the brackets
+ # match the preceding element one or more times
Really useful resource for generating and checking regex: http://www.myezapp.com/apps/dev/regexp/show.ws
Try like this , It is working fine
validates :name, presence: true,
uniqueness: true,
format: {
with: /\A[a-zA-Z0-9_-$]+\z/,
message: 'Must be formatted correctly.'
}
I just tested your regular expression in Rubular with the 'jon'. There is no matching.
I am not optimized regular expression coder. But still the below regular expression works.
/^[a-zA-Z0-9_-]+$/
So try
validates :name, presence: true,
uniqueness: true,
format: {
with: /^[a-zA-Z0-9_-]+$/,
message: 'Must be formatted correctly.'
}