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66 lines
2.9 KiB
Ruby
66 lines
2.9 KiB
Ruby
module ActiveModel
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# == Active Model Confirmation Validator
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module Validations
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class ConfirmationValidator < EachValidator
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def validate_each(record, attribute, value)
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if (confirmed = record.send("#{attribute}_confirmation")) && (value != confirmed)
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record.errors.add(attribute, :confirmation, options)
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end
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end
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def setup(klass)
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klass.send(:attr_accessor, *attributes.map do |attribute|
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:"#{attribute}_confirmation" unless klass.method_defined?(:"#{attribute}_confirmation")
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end.compact)
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end
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end
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module HelperMethods
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# Encapsulates the pattern of wanting to validate a password or email
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# address field with a confirmation. For example:
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#
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# Model:
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# class Person < ActiveRecord::Base
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# validates_confirmation_of :user_name, :password
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# validates_confirmation_of :email_address,
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# :message => "should match confirmation"
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# end
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#
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# View:
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# <%= password_field "person", "password" %>
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# <%= password_field "person", "password_confirmation" %>
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#
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# The added +password_confirmation+ attribute is virtual; it exists only
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# as an in-memory attribute for validating the password. To achieve this,
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# the validation adds accessors to the model for the confirmation
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# attribute.
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#
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# NOTE: This check is performed only if +password_confirmation+ is not
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# +nil+, and by default only on save. To require confirmation, make sure
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# to add a presence check for the confirmation attribute:
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#
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# validates_presence_of :password_confirmation, :if => :password_changed?
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#
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# Configuration options:
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# * <tt>:message</tt> - A custom error message (default is: "doesn't match
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# confirmation").
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# * <tt>:on</tt> - Specifies when this validation is active. Runs in all
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# validation contexts by default (+nil+), other options are <tt>:create</tt>
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# and <tt>:update</tt>.
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# * <tt>:if</tt> - Specifies a method, proc or string to call to determine
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# if the validation should occur (e.g. <tt>:if => :allow_validation</tt>,
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# or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The
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# method, proc or string should return or evaluate to a true or false
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# value.
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# * <tt>:unless</tt> - Specifies a method, proc or string to call to
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# determine if the validation should not occur (e.g.
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# <tt>:unless => :skip_validation</tt>, or
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# <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
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# method, proc or string should return or evaluate to a true or false value.
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def validates_confirmation_of(*attr_names)
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validates_with ConfirmationValidator, _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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