Added custom matchers for defining default input types on regexp

Signed-off-by: Carlos Antonio da Silva <carlosantoniodasilva@gmail.com>

lib/simple_form/form_builder.rb

@@ -13,6 +13,8 @@ module SimpleForm
     map_type :country, :time_zone,                 :to => SimpleForm::Inputs::PriorityInput
     map_type :boolean,                             :to => SimpleForm::Inputs::BooleanInput
 
+    @@custom_matchers = Hash.new
+
     # Basic input helper, combines all components in the stack to generate
     # input html based on options the user define and some guesses through
     # database column information. By default a call to input will generate
@@ -242,6 +244,16 @@ module SimpleForm
       SimpleForm::ErrorNotification.new(self, options).render
     end
 
+    # Add custom matchers for selecting default input type
+    #
+    # == Examples
+    #
+    # SimpleForm::FormBuilder.add_matcher( /regexp/ => :input_type )
+    #
+    def self.add_matcher(*args)
+      @@custom_matchers.reverse_merge!(*args)
+    end
+
   private
 
     # Attempt to guess the better input type given the defined options. By
@@ -264,6 +276,10 @@ module SimpleForm
             when /email/     then :email
             when /phone/     then :tel
             when /url/       then :url
+            else
+              @@custom_matchers.reduce(nil) { |memo, a|
+                a[0].match(attribute_name.to_s) ? a[1] : memo
+              }
           end
 
           match || input_type || file_method?(attribute_name) || :string

test/form_builder_test.rb

@@ -167,6 +167,13 @@ class FormBuilderTest < ActionView::TestCase
     assert_select 'form input#user_born_at.string'
   end
 
+  test 'builder should allow adding custom matchers for default input types' do
+    SimpleForm::FormBuilder.add_matcher( /count/ => :integer )
+    with_form_for @user, :post_count
+    assert_no_select 'form input#user_post_count.string'
+    assert_select 'form input#user_post_count.numeric.integer'
+  end
+
   # COMMON OPTIONS
   test 'builder should allow passing options to input' do
     with_form_for @user, :name, :input_html => { :class => 'my_input', :id => 'my_input' }

test/support/models.rb

@@ -40,7 +40,7 @@ class User
 
   attr_accessor :id, :name, :company, :company_id, :time_zone, :active, :description, :created_at, :updated_at,
     :credit_limit, :age, :password, :delivery_time, :born_at, :special_company_id, :country, :url, :tag_ids,
-    :avatar, :email, :status, :residence_country, :phone_number
+    :avatar, :email, :status, :residence_country, :phone_number, :post_count
 
   def initialize(options={})
     options.each do |key, value|