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80 lines
3.1 KiB
Ruby
80 lines
3.1 KiB
Ruby
# frozen_string_literal: true
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module ActiveModel
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module Validations
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class ConfirmationValidator < EachValidator # :nodoc:
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def initialize(options)
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super({ case_sensitive: true }.merge!(options))
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setup!(options[:class])
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end
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def validate_each(record, attribute, value)
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unless (confirmed = record.public_send("#{attribute}_confirmation")).nil?
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unless confirmation_value_equal?(record, attribute, value, confirmed)
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human_attribute_name = record.class.human_attribute_name(attribute)
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record.errors.add(:"#{attribute}_confirmation", :confirmation, **options.except(:case_sensitive).merge!(attribute: human_attribute_name))
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end
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end
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end
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private
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def setup!(klass)
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klass.attr_reader(*attributes.filter_map do |attribute|
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:"#{attribute}_confirmation" unless klass.method_defined?(:"#{attribute}_confirmation")
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end)
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klass.attr_writer(*attributes.filter_map do |attribute|
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:"#{attribute}_confirmation" unless klass.method_defined?(:"#{attribute}_confirmation=")
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end)
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end
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def confirmation_value_equal?(record, attribute, value, confirmed)
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if !options[:case_sensitive] && value.is_a?(String)
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value.casecmp(confirmed) == 0
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else
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value == confirmed
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end
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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.
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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+. To require confirmation, make sure to add a presence check for
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# 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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# <tt>%{translated_attribute_name}</tt>").
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# * <tt>:case_sensitive</tt> - Looks for an exact match. Ignored by
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# non-text columns (+true+ by default).
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#
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# There is also a list of default options supported by every validator:
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# +:if+, +:unless+, +:on+, +:allow_nil+, +:allow_blank+, and +:strict+.
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# See <tt>ActiveModel::Validations#validates</tt> for more information
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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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