CODEWITHSUNDEEP
ruby-on-railsactiverecord
randombits
randombits

Reputation: 48450

Ruby on Rails: extending ActiveRecord::Errors

In Ruby on Rails, where does one put the code from this snippet in http://gist.github.com/376389? I want to extend ActiveRecord::Errors with the code that's available there so I can merge error messages.

Is this something for ApplicationController? or for lib?

Paste from github.com

# monkey patch gleaned from http://dev.rubyonrails.org/attachment/ticket/11394/merge_bang_errors.patch
module ActiveRecord
  class Errors

    def merge!(errors, options={})
      fields_to_merge = if only=options[:only]
        only
      elsif except=options[:except]
        except = [except] unless except.is_a?(Array)
        except.map!(&:to_sym)
        errors.entries.map(&:first).select do |field|
          !except.include?(field.to_sym)
        end
      else
        errors.entries.map(&:first)
      end
      fields_to_merge = [fields_to_merge] unless fields_to_merge.is_a?(Array)
      fields_to_merge.map!(&:to_sym)

      errors.entries.each do |field, msg|
        add field, msg if fields_to_merge.include?(field.to_sym)
      end
    end
  end
end

Upvotes: 0

Views: 1200

Answers (2)

Charl Matthee
Charl Matthee

Reputation: 55

This question is stale but if you want to do something similar in rails 3.x you can drop this in a file in your config/initializers/ directory:

# monkey patch gleaned from http://dev.rubyonrails.org/attachment/ticket/11394/merge_bang_errors.patch

module ActiveModel
  class Errors
    def merge!(errors, options={})
      return if errors.blank? || errors.first.size < 2

      fields_to_merge = if only=options[:only]
        only
      elsif except=options[:except]
        except = [except] unless except.is_a?(Array)
        except.map!(&:to_sym)
        errors.entries.map(&:first).select do |field|
          !except.include?(field.to_sym)
        end
      else
        errors.entries.map(&:first)
      end
      fields_to_merge = [fields_to_merge] unless fields_to_merge.is_a?(Array)
      fields_to_merge.map!(&:to_sym)

      errors.entries.each do |field, msg|
        add field, msg if fields_to_merge.include?(field.to_sym)
      end
    end
  end
end

Upvotes: 0

ryeguy
ryeguy

Reputation: 66851

You can just drop that into any ruby file in your initializers directory (create a new one, name it whatever you want). Rails runs all of the files in there every time it is booted, and will extend Errors at that time.

Upvotes: 4

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