form_builder.rb

class FormBuilder < ActionView::Helpers::FormBuilder
  def text_field(attribute, options={})
    input_field(attribute, options) do
      super
    end
  end
  
  def password_field(attribute, options={})
    input_field(attribute, options) do
      super
    end
  end
  
  def check_box(attribute, options={})
    checked = options[:checked] || @object.send(attribute)

    content_tag :div, class: 'field' do
      content_tag :div, class: "ui#{checked ? ' checked' : ''} checkbox" do
        super + label(attribute)
      end
    end
  end
  
  def select(attribute, choices=nil, options={}, html_options={})
    html_options[:class] = 'ui fluid dropdown'
    
    content_tag :div, class: 'field' do
      super
    end
  end
  
  def submit(value, options={})
    options[:class] ||= 'ui fluid large green button'
    super
  end
  
  def input_field(attribute, options={}, &block)
    icon       = options.delete(:icon)
    label_name = options.delete(:label)
    has_error  = options.delete(:has_error) || @object.errors.has_key?(attribute)
    
    label = label_name ? (label(attribute, label_name)) : raw('')
    
    content_tag :div, class: "field#{has_error ? ' error' : ''}" do            
      if icon
        label + content_tag(:div, class: 'ui left icon input') do
          content_tag(:i, class: "#{icon} icon"){} + yield
        end
      else
        label + yield
      end
    end
  end
  
  def method_missing(method, *args, &block)
    @template.send(method, *args, &block)
  end
end