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d6cbb27e7b
Having a huge array to whitelist options is not the proper way to handle this case. This means that the ActiveModel::Errors object should know about the options given in *all* validators and break the extensibility added by the validators itself. If the intent is to whitelist options before sending them to I18n, each validator should clean its respective options instead of throwing the responsibility to the Errors object.
This reverts commit bc1c8d58ec.
41 lines
1.9 KiB
Ruby
41 lines
1.9 KiB
Ruby
require 'active_support/core_ext/object/blank'
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module ActiveModel
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module Validations
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class PresenceValidator < EachValidator
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def validate(record)
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record.errors.add_on_blank(attributes, options[:message])
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end
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end
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module HelperMethods
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# Validates that the specified attributes are not blank (as defined by Object#blank?). Happens by default on save. Example:
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#
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# class Person < ActiveRecord::Base
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# validates_presence_of :first_name
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# end
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#
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# The first_name attribute must be in the object and it cannot be blank.
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#
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# If you want to validate the presence of a boolean field (where the real values are true and false),
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# you will want to use <tt>validates_inclusion_of :field_name, :in => [true, false]</tt>.
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#
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# This is due to the way Object#blank? handles boolean values: <tt>false.blank? # => true</tt>.
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#
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# Configuration options:
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# * <tt>message</tt> - A custom error message (default is: "can't be blank").
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# * <tt>on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>,
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# <tt>:update</tt>).
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# * <tt>if</tt> - Specifies a method, proc or string to call to determine if the validation should
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# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>).
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# The method, proc or string should return or evaluate to a true or false value.
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# * <tt>unless</tt> - Specifies a method, proc or string to call to determine if the validation should
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# not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>).
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# The method, proc or string should return or evaluate to a true or false value.
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#
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def validates_presence_of(*attr_names)
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validates_with PresenceValidator, _merge_attributes(attr_names)
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end
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end
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end
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end
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