Fix Ruby 2.7 deprecations

lib/client_side_validations/action_view/form_with_helper.rb

@@ -15,7 +15,7 @@ def form_with(model: nil, scope: nil, url: nil, format: nil, **options, &block)
           if block_given?
             form_tag_with_validators scope, model, options, url, &block
           else
-            html_options = html_options_for_form_with(url, model, options)
+            html_options = html_options_for_form_with(url, model, **options)
             form_tag_html(html_options)
           end
         end
@@ -31,16 +31,16 @@ def check_model(url, model, format, scope)
           [url, model, scope]
         end
 
-        def form_tag_with_validators(scope, model, options, url)
+        def form_tag_with_validators(scope, model, options, url, &block)
           @validators = {}
 
           builder = instantiate_builder(scope, model, options)
-          output  = capture(builder, &Proc.new)
+          output  = capture(builder, &block)
           options[:multipart] ||= builder.multipart?
 
           build_bound_validators! options
 
-          html_options = html_options_for_form_with(url, model, options)
+          html_options = html_options_for_form_with(url, model, **options)
 
           if model
             html_options[:novalidate] ||= 'novalidate'

lib/client_side_validations/active_model.rb

@@ -91,7 +91,7 @@ def check_new_record(validator)
       end
 
       def will_save_change?(options)
-        options =~ /changed\?/ || options =~ /will_save_change_to/
+        options.is_a?(Symbol) && (options.end_with?('changed?') || options.start_with?('will_save_change_to'))
       end
 
       def check_conditionals(attr, validator, force)

test/action_view/cases/helper.rb

@@ -15,11 +15,11 @@ class Base
 module ActionViewTestSetup
   include ::ClientSideValidations::ActionView::Helpers::FormHelper
 
-  def form_for(*)
+  def form_for(*, **)
     @output_buffer = super
   end
 
-  def form_with(*)
+  def form_with(*, **)
     @output_buffer = super
   end