Allow to pass any attributes to wrapper (not just class)

README.md

@@ -189,24 +189,26 @@ You can also prepend and append buttons. Note: The buttons must contain the
 <%= f.text_field :search, append: link_to("Go", "#", class: "btn btn-default") %>
 ```
 
-### Additional Form Group Classes
+### Additional Form Group Attributes
 
-If you want to add an additional css class to the form group div, you can use
-the `wrapper_class: 'additional-class'` option.
+If you want to add an additional css class or any other attribute to the form group div, you can use
+the `wrapper: { class: 'additional-class', data: { foo: 'bar' } }` option.
 
 ```erb
-<%= f.text_field :name, wrapper_class: 'has-warning' %>
+<%= f.text_field :name, wrapper: { class: 'has-warning', data: { foo: 'bar' } } %>
 ```
 
 Which produces the following output:
 
 ```erb
-<div class="form-group has-warning">
+<div class="form-group has-warning" data-foo="bar">
   <label class="control-label" for="user_name">Id</label>
   <input class="form-control" id="user_name" name="user[name]" type="text">
 </div>
 ```
 
+You still can use `wrapper_class` option to set only a css class. This is just a short form of `wrapper: { class: 'additional-class' }`.
+
 ### Checkboxes and Radios
 
 Checkboxes and radios should be placed inside of a `form_group` to render

lib/bootstrap_form/form_builder.rb

@@ -256,13 +256,31 @@ def form_group_builder(method, options, html_options = nil)
       label = options.delete(:label)
       label_class = hide_class if options.delete(:hide_label)
       wrapper_class = options.delete(:wrapper_class)
+      wrapper_options = options.delete(:wrapper)
       help = options.delete(:help)
       icon = options.delete(:icon)
       label_col = options.delete(:label_col)
       control_col = options.delete(:control_col)
       layout = get_group_layout(options.delete(:layout))
+      form_group_options = {
+        id: options[:id],
+        label: {
+          text: label,
+          class: label_class
+        },
+        help: help,
+        icon: icon,
+        label_col: label_col,
+        control_col: control_col,
+        layout: layout,
+        class: wrapper_class
+      }
+
+      if wrapper_options.is_a?(Hash)
+        form_group_options.reverse_merge!(wrapper_options)
+      end
 
-      form_group(method, id: options[:id], label: { text: label, class: label_class }, help: help, icon: icon, label_col: label_col, control_col: control_col, layout: layout, class: wrapper_class) do
+      form_group(method, form_group_options) do
         yield
       end
     end

test/bootstrap_form_test.rb

@@ -786,4 +786,9 @@ def setup
     expected = %{<div class="form-group"><div class="col-sm-10 col-sm-offset-2">Hallo</div></div><div class="form-group"><label class="control-label col-sm-2" for="user_email">Email</label><div class="col-sm-10"><input class="form-control" id="user_email" name="user[email]" type="text" value="steve@example.com" /></div></div>}
     assert_equal expected, output
   end
+
+  test "adds data-attributes (or any other options) to wrapper" do
+    expected = %{<div class="form-group" data-foo="bar"><label class="control-label" for="user_misc">Misc</label><input class="form-control" id="user_misc" name="user[misc]" type="search" /></div>}
+    assert_equal expected, @builder.search_field(:misc, wrapper: { data: { foo: 'bar' } })
+  end
 end