58 lines
1.8 KiB
Ruby
58 lines
1.8 KiB
Ruby
require 'active_support/callbacks'
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module ActiveModel
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module Validations
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module Callbacks
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# == Active Model Validation callbacks
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#
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# Provides an interface for any class to have <tt>before_validation</tt> and
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# <tt>after_validation</tt> callbacks.
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#
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# First, extend ActiveModel::Callbacks from the class you are creating:
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#
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# class MyModel
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# include ActiveModel::Validations::Callbacks
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#
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# before_validation :do_stuff_before_validation
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# after_validation :do_stuff_after_validation
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# end
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#
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# Like other before_* callbacks if <tt>before_validation</tt> returns false
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# then <tt>valid?</tt> will not be called.
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extend ActiveSupport::Concern
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included do
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include ActiveSupport::Callbacks
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define_callbacks :validation, :terminator => "result == false", :scope => [:kind, :name]
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end
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module ClassMethods
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def before_validation(*args, &block)
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options = args.last
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if options.is_a?(Hash) && options[:on]
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options[:if] = Array.wrap(options[:if])
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options[:if].unshift("self.validation_context == :#{options[:on]}")
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end
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set_callback(:validation, :before, *args, &block)
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end
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def after_validation(*args, &block)
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options = args.extract_options!
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options[:prepend] = true
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options[:if] = Array.wrap(options[:if])
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options[:if] << "!halted"
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options[:if].unshift("self.validation_context == :#{options[:on]}") if options[:on]
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set_callback(:validation, :after, *(args << options), &block)
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end
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end
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protected
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# Overwrite run validations to include callbacks.
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def run_validations!
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run_callbacks(:validation) { super }
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end
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end
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end
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end
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