What is covered by save(:validate => false)?

问题:

I just implemented a number of custom counter_caches using code like this:

def after_save     self.update_counter_cache end def after_destroy     self.update_counter_cache end def update_counter_cache     self.company.new_matchings_count = Matching.where(:read => false).count     self.company.save end 

My question is this - what does the command Model.save(:validate => false) actually prevent beyond things like validates_with or before_validation?

Will my custom counter_caches be affected if I keep my existing saves without validation?

回答1:

If you pass in the :validate=>false, it skips the valid? command. Everything else functions the same.

You can check the code out here: http://api.rubyonrails.org/classes/ActiveRecord/Validations.html

def save(options={})   perform_validations(options) ? super : false end  ...  if perform_validation   valid?(options.is_a?(Hash) ? options[:context] : nil) else   true end 

回答2:

Testing on Rails 4.2.6 shows that .save(:validate=>false) will actually skip before_validations and after_validation callbacks.

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