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module ActiveRecord
# Raised by <tt>save!</tt> and <tt>create!</tt> when the record is invalid. Use the
# +record+ method to retrieve the record which did not validate.
# begin
# complex_operation_that_calls_save!_internally
# rescue ActiveRecord::RecordInvalid => invalid
# puts invalid.record.errors
# end
class RecordInvalid < ActiveRecordError
attr_reader :record
def initialize(record)
@record = record
super("Validation failed: #{@record.errors.full_messages.join(", ")}")
end
end
module Validations
def self.included(base) # :nodoc:
base.extend ClassMethods
base.class_eval do
alias_method_chain :save, :validation
alias_method_chain :save!, :validation
end
end
module ClassMethods
# Creates an object just like Base.create but calls save! instead of save
# so an exception is raised if the record is invalid.
def create!(attributes = nil, &block)
if attributes.is_a?(Array)
attributes.collect { |attr| create!(attr, &block) }
else
object = new(attributes)
yield(object) if block_given?
object.save!
object
end
end
end
# The validation process on save can be skipped by passing false. The regular Base#save method is
# replaced with this when the validations module is mixed in, which it is by default.
def save_with_validation(perform_validation = true)
if perform_validation && valid? || !perform_validation
save_without_validation
else
false
end
end
# Attempts to save the record just like Base#save but will raise a RecordInvalid exception instead of returning false
# if the record is not valid.
def save_with_validation!
if valid?
save_without_validation!
else
raise RecordInvalid.new(self)
end
end
# Returns the Errors object that holds all information about attribute error messages.
def errors
@errors ||= Errors.new(self)
end
end
end
Dir[File.dirname(__FILE__) + "/validations/*.rb"].sort.each do |path|
filename = File.basename(path)
require "active_record/validations/#{filename}"
end
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