ruby-on-railsoperatorslogical-operatorsshort-circuiting

How to avoid short-circuit evaluation on

I'm working with Ruby on Rails and would like to validate two different models :

if (model1.valid? && model2.valid?)
...
end

However, "&&" operator uses short-circuit evaluation (i.e. it evaluates "model2.valid?" only if "model1.valid?" is true), which prevents model2.valids to be executed if model1 is not valid.

Is there an equivalent of "&&" which would not use short-circuit evaluation? I need the two expressions to be evaluated.

Solution

  • Try this:

    [model1, model2].map(&:valid?).all?

    It'll return true if both are valid, and create the errors on both instances.