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83 lines
3 KiB
Ruby
83 lines
3 KiB
Ruby
module ActiveRecord
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# = Active Record RecordInvalid
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#
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# Raised by <tt>save!</tt> and <tt>create!</tt> when the record is invalid. Use the
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# +record+ method to retrieve the record which did not validate.
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#
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# begin
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# complex_operation_that_calls_save!_internally
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# rescue ActiveRecord::RecordInvalid => invalid
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# puts invalid.record.errors
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# end
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class RecordInvalid < ActiveRecordError
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attr_reader :record
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def initialize(record)
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@record = record
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errors = @record.errors.full_messages.join(", ")
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super(I18n.t("activerecord.errors.messages.record_invalid", :errors => errors))
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end
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end
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# = Active Record Validations
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#
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# Active Record includes the majority of its validations from <tt>ActiveModel::Validations</tt>
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# all of which accept the <tt>:on</tt> argument to define the context where the
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# validations are active. Active Record will always supply either the context of
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# <tt>:create</tt> or <tt>:update</tt> dependent on whether the model is a
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# <tt>new_record?</tt>.
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module Validations
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extend ActiveSupport::Concern
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include ActiveModel::Validations
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module ClassMethods
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# Creates an object just like Base.create but calls save! instead of save
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# so an exception is raised if the record is invalid.
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def create!(attributes = nil, &block)
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if attributes.is_a?(Array)
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attributes.collect { |attr| create!(attr, &block) }
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else
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object = new(attributes)
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yield(object) if block_given?
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object.save!
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object
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end
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end
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end
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# The validation process on save can be skipped by passing :validate => false. The regular Base#save method is
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# replaced with this when the validations module is mixed in, which it is by default.
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def save(options={})
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perform_validations(options) ? super : false
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end
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# Attempts to save the record just like Base#save but will raise a RecordInvalid exception instead of returning false
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# if the record is not valid.
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def save!(options={})
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perform_validations(options) ? super : raise(RecordInvalid.new(self))
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end
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# Runs all the validations within the specified context. Returns true if no errors are found,
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# false otherwise.
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#
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# If the argument is false (default is +nil+), the context is set to <tt>:create</tt> if
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# <tt>new_record?</tt> is true, and to <tt>:update</tt> if it is not.
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#
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# Validations with no <tt>:on</tt> option will run no matter the context. Validations with
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# some <tt>:on</tt> option will only run in the specified context.
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def valid?(context = nil)
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context ||= (new_record? ? :create : :update)
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output = super(context)
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errors.empty? && output
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end
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protected
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def perform_validations(options={})
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perform_validation = options[:validate] != false
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perform_validation ? valid?(options[:context]) : true
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end
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end
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end
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require "active_record/validations/associated"
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require "active_record/validations/uniqueness"
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