Cast values when determining if condition is valid. Fixes errors on blank dates

lib/ransack/nodes/attribute.rb

@@ -30,10 +30,6 @@ module Ransack
         end
       end
 
-      def cast_value(value)
-        value.cast_to_type(type)
-      end
-
       def eql?(other)
         self.class == other.class &&
         self.name == other.name

lib/ransack/nodes/condition.rb

@@ -4,8 +4,6 @@ module Ransack
       i18n_word :attribute, :predicate, :combinator, :value
       i18n_alias :a => :attribute, :p => :predicate, :m => :combinator, :v => :value
 
-      delegate :cast_value, :to => :first_attribute
-
       attr_reader :predicate
 
       class << self
@@ -20,7 +18,9 @@ module Ransack
               :m => combinator,
               :v => [values]
             )
-            predicate.validate(condition.values) ? condition : nil
+            # TODO: Figure out what to do with multiple types of attributes, if anything.
+            # Tempted to go with "garbage in, garbage out" on this one
+            predicate.validate(condition.values, condition.default_type) ? condition : nil
           end
         end
 
@@ -37,17 +37,13 @@ module Ransack
       end
 
       def valid?
-        attributes.detect(&:valid?) && predicate && valid_arity? && predicate.validate(values) && valid_combinator?
+        attributes.detect(&:valid?) && predicate && valid_arity? && predicate.validate(values, default_type) && valid_combinator?
       end
 
       def valid_arity?
         values.size <= 1 || predicate.compound || %w(in not_in).include?(predicate.name)
       end
 
-      def first_attribute
-        attributes.first
-      end
-
       def attributes
         @attributes ||= []
       end
@@ -117,7 +113,7 @@ module Ransack
       end
 
       def value
-        predicate.compound ? values.map {|v| cast_value(v)} : cast_value(values.first)
+        predicate.compound ? values.map {|v| v.cast(default_type)} : values.first.cast(default_type)
       end
 
       def build(params)
@@ -188,7 +184,7 @@ module Ransack
       end
 
       def casted_values_for_attribute(attr)
-        validated_values.map {|v| v.cast_to_type(predicate.type || attr.type)}
+        validated_values.map {|v| v.cast(predicate.type || attr.type)}
       end
 
       def formatted_values_for_attribute(attr)
@@ -199,6 +195,10 @@ module Ransack
         end
       end
 
+      def default_type
+        predicate.type || (attributes.first && attributes.first.type)
+      end
+
       private
 
       def valid_combinator?

lib/ransack/nodes/value.rb

@@ -2,7 +2,7 @@ module Ransack
   module Nodes
     class Value < Node
       attr_accessor :value
-      delegate :blank?, :present?, :to => :value
+      delegate :present?, :blank?, :to => :value
 
       def initialize(context, value = nil)
         super(context)
@@ -23,7 +23,7 @@ module Ransack
         value.hash
       end
 
-      def cast_to_type(type)
+      def cast(type)
          case type
          when :date
            cast_to_date(value)

lib/ransack/predicate.rb

@@ -39,7 +39,7 @@ module Ransack
       @arel_predicate = opts[:arel_predicate]
       @type = opts[:type]
       @formatter = opts[:formatter]
-      @validator = opts[:validator]
+      @validator = opts[:validator] || lambda { |v| v.present? }
       @compound = opts[:compound]
     end
 
@@ -61,12 +61,8 @@ module Ransack
       end
     end
 
-    def validate(vals)
-      if validator
-        vals.select {|v| validator.call(v.value)}.any?
-      else
-        vals.select {|v| v.present?}.any?
-      end
+    def validate(vals, type = @type)
+      vals.select {|v| validator.call(type ? v.cast(type) : v.value)}.any?
     end
 
   end

lib/ransack/version.rb

@@ -1,3 +1,3 @@
 module Ransack
-  VERSION = "0.5.1"
+  VERSION = "0.5.2"
 end