def collection_check_boxes(method, collection, value_method, text_method, options = {}, html_options = {}, &block)
      SimpleForm::Tags::CollectionCheckBoxes.new(@object_name, method, @template, collection, value_method, text_method, objectify_options(options), @default_options.merge(html_options)).render(&block)
    end
def collection_check_boxes(method, collection, value_method, text_method, options = {}, html_options = {}, &block)
      SimpleForm::Tags::CollectionCheckBoxes.new(@object_name, method, @template, collection, value_method, text_method, objectify_options(options), @default_options.merge(html_options)).render(&block)
    end
Creates a collection of check boxes for each item in the collection,
 associated with a clickable label. Use value_method and text_method to
 convert items in the collection for use as text/value in check boxes.
 You can give a symbol or a proc to both value_method and text_method,
 that will be evaluated for each item in the collection.

 == Examples

   form_for @user do |f|
     f.collection_check_boxes :options, [[true, 'Yes'] ,[false, 'No']], :first, :last
   end

   <input name="user[options][]" type="hidden" value="" />
   <input id="user_options_true" name="user[options][]" type="checkbox" value="true" />
   <label class="collection_check_boxes" for="user_options_true">Yes</label>
   <input name="user[options][]" type="hidden" value="" />
   <input id="user_options_false" name="user[options][]" type="checkbox" value="false" />
   <label class="collection_check_boxes" for="user_options_false">No</label>

 It is also possible to give a block that should generate the check box +
 label. To wrap the check box with the label, for instance:

   form_for @user do |f|
     f.collection_check_boxes(
       :options, [[true, 'Yes'] ,[false, 'No']], :first, :last
     ) do |b|
       b.label { b.check_box + b.text }
     end
   end

 == Options

 Collection check box accepts some extra options:

   * checked  => the value or values that should be checked initially. Accepts
                 a single item or an array of items. It overrides existing associations.

   * disabled => the value or values that should be disabled. Accepts a single
                 item or an array of items.

   * collection_wrapper_tag   => the tag to wrap the entire collection.

   * collection_wrapper_class => the CSS class to use for collection_wrapper_tag. This option
                                 is ignored if the :collection_wrapper_tag option is blank.

   * item_wrapper_tag         => the tag to wrap each item in the collection.

   * item_wrapper_class       => the CSS class to use for item_wrapper_tag

   * a block                  => to generate the label + check box or any other component.