Add support for check_boxes_collection

Closes bootstrap-ruby#2

Author: carloslopes

README.md

@@ -83,6 +83,7 @@ This gem wraps the following Rails form helpers:
 * time_select
 * datetime_select
 * check_box
+* check_boxes_collection
 * radio_button
 * radio_buttons_collection
 
@@ -213,19 +214,19 @@ To display checkboxes and radios inline, pass the `inline: true` option:
 
 #### Collections
 
-BootstrapForms also provide a helpful helper that automatically creates the
-`form_group` and the `radio_button`s for you:
+BootstrapForms also provide helpful helpers that automatically creates the
+`form_group` and the `radio_button`s or `check_box`es for you:
 
 ```erb
 <%= f.radio_buttons_collection :skill_level, Skill.all, :id, :name %>
+<%= f.check_boxes_collection :skills, Skill.all, :id, :name %>
 ```
 
 Collection methods accept these options:
 * `:label`: Customize the `form_group`'s label;
 * `:hide-label`: Pass true to hide the `form_group`'s label;
 * `:help`: Add a help span to the `form_group`;
-* `:inline`: Renders inline `radio_button`s;
-* Any other option will be forwarded to the `radio_button`;
+* Other options will be forwarded to the `radio_button`/`check_box` method;
 
 ### Prepending and Appending Inputs
 

lib/bootstrap_form/form_builder.rb

@@ -116,22 +116,16 @@ def static_control(name, options = {}, &block)
       end
     end
 
-    def radio_buttons_collection(name, collection, value, text, options = {})
-      options.symbolize_keys!
-
-      label = options.delete(:label)
-      label_class = hide_class if options.delete(:hide_label)
-      help = options.delete(:help)
-
-      form_group(name, label: { text: label, class: label_class }, help: help) do
-        inputs = ''
-
-        collection.each do |obj|
-          radio_options = options.merge(label: obj.send(text))
-          inputs << radio_button(name, obj.send(value), radio_options)
-        end
+    def radio_buttons_collection(*args)
+      inputs_collection(*args) do |name, value, options|
+        radio_button(name, value, options)
+      end
+    end
 
-        inputs.html_safe
+    def check_boxes_collection(*args)
+      inputs_collection(*args) do |name, value, options|
+        options[:multiple] = true
+        check_box(name, options, value, nil)
       end
     end
 
@@ -192,5 +186,24 @@ def generate_help(name, help_text)
       help_text = object.errors[name].join(', ') if has_error?(name)
       content_tag(:span, help_text, class: 'help-block') if help_text
     end
+
+    def inputs_collection(name, collection, value, text, options = {}, &block)
+      options.symbolize_keys!
+
+      label = options.delete(:label)
+      label_class = hide_class if options.delete(:hide_label)
+      help = options.delete(:help)
+
+      form_group(name, label: { text: label, class: label_class }, help: help) do
+        inputs = ''
+
+        collection.each do |obj|
+          input_options = options.merge(label: obj.send(text))
+          inputs << block.call(name, obj.send(value), input_options)
+        end
+
+        inputs.html_safe
+      end
+    end
   end
 end

test/bootstrap_form_test.rb

@@ -428,4 +428,26 @@ def setup
 
     assert_equal expected, @builder.radio_buttons_collection(:misc, collection, :id, :street, inline: true)
   end
+
+  test 'check_boxes_collection renders the form_group correctly' do
+    collection = [Address.new(id: 1, street: 'Foobar')]
+    expected = %{<div class="form-group"><label for="user_misc">This is a checkbox collection</label><div class="checkbox"><label for="user_misc"><input id="user_misc_1" name="user[misc][]" type="checkbox" value="1" /> Foobar</label></div><span class="help-block">With a help!</span></div>}
+
+    assert_equal expected, @builder.check_boxes_collection(:misc, collection, :id, :street, label: 'This is a checkbox collection', help: 'With a help!')
+  end
+
+  test 'check_boxes_collection renders multiple checkboxes correctly' do
+    collection = [Address.new(id: 1, street: 'Foo'), Address.new(id: 2, street: 'Bar')]
+    expected = %{<div class="form-group"><label for="user_misc">Misc</label><div class="checkbox"><label for="user_misc"><input id="user_misc_1" name="user[misc][]" type="checkbox" value="1" /> Foo</label></div><div class="checkbox"><label for="user_misc"><input id="user_misc_2" name="user[misc][]" type="checkbox" value="2" /> Bar</label></div></div>}
+
+    assert_equal expected, @builder.check_boxes_collection(:misc, collection, :id, :street)
+  end
+
+  test 'check_boxes_collection renders inline checkboxes correctly' do
+    collection = [Address.new(id: 1, street: 'Foo'), Address.new(id: 2, street: 'Bar')]
+    expected = %{<div class="form-group"><label for="user_misc">Misc</label><label class="checkbox-inline" for="user_misc"><input id="user_misc_1" name="user[misc][]" type="checkbox" value="1" /> Foo</label><label class="checkbox-inline" for="user_misc"><input id="user_misc_2" name="user[misc][]" type="checkbox" value="2" /> Bar</label></div>}
+
+    assert_equal expected, @builder.check_boxes_collection(:misc, collection, :id, :street, inline: true)
+  end
+
 end