Devise

Devise's validation strategies add conditionals to the validators

By design ClientSideValidations will filter out all validators with conditionals. However, you can override this behavior on each input.

<%= f.text_field :password, :validate => true -%>
<%= f.text_field :password, :validate => { :presence => true } -%>

In the first case all validators for the :password attribute will be forced to obey any conditionals. In the second case only the :presence validator will obey conditionals.

"Obeying" conditionals means the conditional will be evaluated at the point the form is generated.