default class, input-group options

README.markdown

@@ -42,10 +42,15 @@ Formtastic does), it only lightly wraps the existing Rails form tag helpers.
     / a field with a custom label
     = user.password_field :password_confirmation, 'Confirm Password'
 
-    / input fields with custom add-ons
+    / input fields with custom add-ons, append by default
+    = user.text_field :twitter_id, 'Twitter', :class => 'medium' do
+      %span.add-on @
     = user.text_field :twitter_id, 'Twitter', :class => 'medium', :add_on => :prepend do
       %span.add-on @
 
+    / input fields with input-group
+    = user.text_field :twitter_id, 'Twitter', :class => 'medium', :input-group => '€'
+
     / select fields now have the second parameter as a label
     = user.date_select :born_on, 'Born on', {}, :class => 'small'
 
@@ -89,6 +94,17 @@ simple:
   * the last options hash accepts an `:add_on` key
   * if a block is passed, the HTML it outputs is placed immediately after the input
 
+## Configuration ##
+
+Default class applied on label and div can be customized. Setup a file `config/initializers/twitter_bootstrap_form_for.rb` e.g.:
+
+```ruby
+TwitterBootstrapFormFor::FormBuilder.label_class = 'col-md-2 control-label'
+TwitterBootstrapFormFor::FormBuilder.div_class = 'col-md-6'
+TwitterBootstrapFormFor::FormBuilder.div_labelless_class = 'col-md-offset-2 col-md-6'
+TwitterBootstrapFormFor::FormBuilder.action_class = 'col-md-offset-2 col-md-6'
+```
+
 ## Known Bugs ##
 
   - inline fields don't receive error markup ([issue #28])

lib/twitter_bootstrap_form_for/form_builder.rb

@@ -2,6 +2,14 @@
 require 'action_view/helpers'
 
 class TwitterBootstrapFormFor::FormBuilder < ActionView::Helpers::FormBuilder
+
+  cattr_accessor :label_class, :div_class, :div_labelless_class, :action_class
+
+  self.label_class = 'col-lg-2 control-label'
+  self.div_class = 'col-lg-10'
+  self.div_labelless_class = 'col-lg-offset-2 col-lg-10'
+  self.action_class = 'col-lg-offset-2 col-lg-10'
+
   include TwitterBootstrapFormFor::FormHelpers
 
   attr_reader :template
@@ -57,7 +65,7 @@ def toggles(*args, &block)
       template.concat self.label(nil, label, :class => label_class) if label.present?
 
 			if @options[:layout] == :horizontal
-        html_class = label.present? ? @options[:default_div_class] : 'col-lg-offset-2 col-lg-10'
+        html_class = label.present? ? @options[:default_div_class] : self.div_labelless_class
       end
       template.concat template.content_tag(:div, :class => html_class) { block.call }
     end
@@ -69,7 +77,7 @@ def toggles(*args, &block)
   def actions(*args, &block)
     if @options[:layout] == :horizontal
       options  = args.extract_options!
-      options[:class] ||= 'col-lg-offset-2 col-lg-10'
+      options[:class] ||= self.action_class
       self.div_wrapper(:div, :class => 'form-group') do
         template.content_tag(:div, :class => options[:class], &block)
       end
@@ -126,10 +134,21 @@ def inline(label = nil, &block)
         elsif @options[:default_div_class].present?
           classes <<  @options[:default_div_class]
         end
-        classes << ('input-' + options.delete(:add_on).to_s) if options[:add_on]
+        classes << ('input-' + (options.delete(:add_on) || :append).to_s) if block.present?
         template.concat template.content_tag(:div, :class => classes.join(' ')) {
           block.call if block.present? and classes.include?('input-prepend')
-          template.concat super(attribute, *(args << options))
+          input_group = options.delete(:input_group)
+          tag = super(attribute, *(args << options))
+          if input_group
+            template.concat template.content_tag(:div, :class => 'input-group' + (input == :select ? ' select2-bootstrap-append' : '')) {
+              template.concat tag
+              template.concat template.content_tag(:span, :class => (input_group =~ /class[^=]*=['"]*[^'"=>]*btn[ '"]/) ? 'input-group-btn' : 'input-group-addon') {
+                template.concat input_group
+              }
+            }
+          else
+            template.concat tag
+          end
           template.concat error_span(attribute)
           block.call if block.present? and classes.include?('input-append')
         }

lib/twitter_bootstrap_form_for/form_helpers.rb

@@ -10,8 +10,8 @@ module TwitterBootstrapFormFor::FormHelpers
         raise "Specified form layout #{options[:layout].to_s} is invalid. Must be one of :vertical, :horizontal, or :inline." unless [:vertical, :horizontal, :inline].include?(options[:layout])
         options[:default_toggle_style] = :stacked
         if options[:layout] == :horizontal
-          options[:default_div_class] ||= 'col-lg-10'
-          options[:default_label_class] ||= 'col-lg-2 control-label'
+          options[:default_div_class] ||= TwitterBootstrapFormFor::FormBuilder.div_class
+          options[:default_label_class] ||= TwitterBootstrapFormFor::FormBuilder.label_class
         end
         if options[:html].nil?
           options[:html] = {:role => 'form'}