Use a more common name :checkboxes instead of :checks.

README.markdown

@@ -72,7 +72,7 @@ Use ranges as options for your select tags
 
     = f.input :year, :options => (1950..Time.now.year)
 
-Options may also be rendered as **:radios** and **:checks**
+Options may also be rendered as **:radios** and **:checkboxes**
 
     = f.input :user, :options => User.all.map(&:name), :as => :radios
 
@@ -109,7 +109,7 @@ Mapping       | Input           | Column Type
 **:date**     |date field       |date, datetime, timestamps           
 **:select**   |select           |-                                    
 **:radios**   |radio buttons    |-                                    
-**:checks**   |check boxes      |-                                    
+**:checkboxes**   |check boxes      |-                                    
 
 
 ### Validations

lib/padrino-fields/form_builder.rb

@@ -46,7 +46,7 @@ def input(attribute, options={})
         def default_input(attribute,type,options={})
           input_options = options.keep_if {|key, value| key != :as}
           if options[:options] || options[:grouped_options]
-            if type==:radios || type == :checks
+            if type==:radios || type == :checkboxes
               collect_inputs_as(attribute,type,input_options)
             else
               select(attribute,input_options)
@@ -117,16 +117,16 @@ def collection_input(attribute,type,item, options={})
           unchecked_value = options.delete(:uncheck_value) || '0'
           options.reverse_merge!(:id => field_id(attribute), :value => '1')
           options.reverse_merge!(:checked => true) if values_matches_field?(attribute, options[:value])
-          klass =  css_class(attribute,type,options[:disabled])
-          name  =  type == :checks ? field_name(attribute) + '[]' : field_name(attribute)
+          klass =  css_class(attribute, type.to_s.singularize, options[:disabled])
+          name  =  type == :checkboxes ? field_name(attribute) + '[]' : field_name(attribute)
           if item.is_a?(Array)
             text, value = item[0], item[1]
           else
             text = item; value = item;
           end
           id = field_id(attribute) + "_" + domize(text)
           opts = html_options(attribute,type,options.merge(:id => id, :class => klass, :value => value))
-          if type == :checks
+          if type == :checkboxes
             html = @template.hidden_field_tag(options[:name] || name, :value => unchecked_value, :id => nil)
             input_item = @template.check_box_tag(name, opts)
           else

test/test_form_builder.rb

@@ -116,20 +116,20 @@ def setup
     end
 
     should "return a collection of checkboxes" do
-      actual = field.input(:string, :options => ["Ann","Bob"], :as => :checks)
-      assert_has_tag("label", :class => "checks", :for => "person_string_ann", content:"Ann") { actual }
+      actual = field.input(:string, :options => ["Ann","Bob"], :as => :checkboxes)
+      assert_has_tag("label", :class => "checkboxes", :for => "person_string_ann", content:"Ann") { actual }
       assert_has_tag("input", type:"checkbox", value:"Ann", id:"person_string_ann", name:"person[string][]") { actual }
-      assert_has_tag("label", :class => "checks", :for => "person_string_bob", content:"Bob") { actual }
+      assert_has_tag("label", :class => "checkboxes", :for => "person_string_bob", content:"Bob") { actual }
       assert_has_tag("input", type:"checkbox", value:"Bob", id:"person_string_bob", name:"person[string][]") { actual }
       assert_has_tag("input", type:"hidden", name:"person[string][]", value:"0") { actual }
     end
 
     should "return a collection of checkboxes using a multi-dimensional array" do
-      actual = field.input(:string, :options => [["Ann",1],["Bob",2]], :as => :checks)
-      assert_has_tag("label", :class => "checks", :for => "person_string_ann", content:"Ann") { actual }
+      actual = field.input(:string, :options => [["Ann",1],["Bob",2]], :as => :checkboxes)
+      assert_has_tag("label", :class => "checkboxes", :for => "person_string_ann", content:"Ann") { actual }
       assert_has_tag("input", type:"checkbox", value:"1", id:"person_string_ann", name:"person[string][]") { actual }
       assert_has_tag("input", type:"hidden", name:"person[string][]", value:"0") { actual }
-      assert_has_tag("label", :class => "checks", :for => "person_string_bob", content:"Bob") { actual }
+      assert_has_tag("label", :class => "checkboxes", :for => "person_string_bob", content:"Bob") { actual }
       assert_has_tag("input", type:"checkbox", value:"2", id:"person_string_bob", name:"person[string][]") { actual }
       assert_has_tag("input", type:"hidden", name:"person[string][]", value:"0") { actual }
     end