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module ActiveRecord
# = Active Record RecordInvalid
#
# 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
errors = @record.errors.full_messages.join(", ")
super(I18n.t("activerecord.errors.messages.record_invalid", :errors => errors))
end
end
# = Active Record Validations
#
# Active Record includes the majority of its validations from ActiveModel::Validations
# all of which accept the <tt>:on</tt> argument to define the context where the
# validations are active. Active Record will always supply either the context of
# <tt>:create</tt> or <tt>:update</tt> dependent on whether the model is a
# <tt>new_record?</tt>.
module Validations
extend ActiveSupport::Concern
include ActiveModel::Validations
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 :validate => false. The regular Base#save method is
# replaced with this when the validations module is mixed in, which it is by default.
def save(options={})
perform_validations(options) ? super : false
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!(options={})
perform_validations(options) ? super : raise(RecordInvalid.new(self))
end
# Runs all the specified validations and returns true if no errors were added otherwise false.
#
# ==== Arguments
#
# * <tt>context</tt> - Context to scope the execution of the validations. Default is <tt>nil</tt>.
# If <tt>nil</tt> then the response of <tt>new_record?</tt> will determine the context. If <tt>new_record?</tt>
# returns true the the context will be <tt>:create</tt>, otherwise <tt>:update</tt>. Validation contexts
# for each validation can be defined using the <tt>:on</tt> option
def valid?(context = nil)
context ||= (new_record? ? :create : :update)
output = super(context)
errors.empty? && output
end
protected
def perform_validations(options={})
perform_validation = options[:validate] != false
perform_validation ? valid?(options[:context]) : true
end
end
end
require "active_record/validations/associated"
require "active_record/validations/uniqueness"
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