add html classes to inputs with the wrappers API

lib/simple_form/components/label_input.rb

@@ -8,6 +8,11 @@ module LabelInput
       end
 
       def label_input
+        [:input_html, :label_html].each do |key|
+          if options.has_key? key
+            options[key].merge! options.fetch(:label_input_html, {})
+          end
+        end
         options[:label] == false ? input : (label + input)
       end
     end

lib/simple_form/components/labels.rb

@@ -46,7 +46,7 @@ def label_html_options
         if options.key?(:input_html) && options[:input_html].key?(:id)
           label_options[:for] = options[:input_html][:id]
         end
-        label_options
+        @label_options = label_options
       end
 
       protected

lib/simple_form/inputs/base.rb

@@ -65,15 +65,20 @@ def initialize(builder, attribute_name, column, input_type, options = {})
         @html_classes = SimpleForm.additional_classes_for(:input) { additional_classes }
 
         @input_html_classes = @html_classes.dup
+        @input_html_options = {}
+
         if SimpleForm.input_class && !input_html_classes.empty?
           input_html_classes << SimpleForm.input_class
         end
+      end
 
-        @input_html_options = html_options_for(:input, input_html_classes).tap do |o|
+      def input_html_options
+        html_options = html_options_for(:input, input_html_classes).tap do |o|
           o[:readonly]  = true if has_readonly?
           o[:disabled]  = true if has_disabled?
           o[:autofocus] = true if has_autofocus?
         end
+        @input_html_options.merge! html_options
       end
 
       def input
@@ -126,8 +131,9 @@ def reflection_or_attribute_name
       def html_options_for(namespace, css_classes)
         html_options = options[:"#{namespace}_html"]
         html_options = html_options ? html_options.dup : {}
+        html_options.reverse_merge!(@builder.wrapper.options[:"#{namespace}_html"] || {})
         css_classes << html_options[:class] if html_options.key?(:class)
-        html_options[:class] = css_classes unless css_classes.empty?
+        html_options[:class] = css_classes.uniq unless css_classes.empty?
         html_options
       end
 

lib/simple_form/wrappers/builder.rb

@@ -40,14 +40,24 @@ module Wrappers
     # In the example above, hint defaults to false, which means it won't automatically
     # do the lookup anymore. It will only be triggered when :hint is explicitly set.
     class Builder
+
       def initialize(options)
         @options    = options
         @components = []
       end
 
       def use(name, options=nil, &block)
-        if options && wrapper = options[:wrap_with]
-          @components << Single.new(name, wrapper)
+        if options && (SimpleForm::FormBuilder::ATTRIBUTE_COMPONENTS.include?(name) \
+                   && !(options.except(:wrap_with).keys.empty?))
+          raise ArgumentError, "Invalid options #{options.except(:wrap_with).keys.inspect} passed to #{name}."
+        end
+
+        if options && options[:wrap_with]
+          @options[:"#{name}_html"] = options.except(:wrap_with)
+          @components << Single.new(name, options[:wrap_with])
+        elsif options
+          @options[:"#{name}_html"] = options
+          @components << name
         else
           @components << name
         end

test/form_builder/wrapper_test.rb

@@ -164,6 +164,18 @@ class WrapperTest < ActionView::TestCase
     assert_select "section.custom_wrapper div.another_wrapper input.string"
   end
 
+  test 'wrappers with use classes on input basis with arrays' do
+    swap_wrapper :default do
+      with_form_for @user, :name
+      assert_select "section.custom_wrapper div.class1.class2 input.class3.class4"
+
+      output_buffer.replace ""
+
+      with_form_for @user, :name, wrapper: custom_wrapper_with_no_wrapping_tag 
+      assert_select "div.custom_wrapper div.elem input.input_class_yo.other_class_yo"
+    end
+  end
+
   test 'access wrappers with indifferent access' do
     swap_wrapper :another do
       with_form_for @user, :name, wrapper: "another"
@@ -172,6 +184,52 @@ class WrapperTest < ActionView::TestCase
     end
   end
 
+  test 'single element without wrap_with applies options to component tags' do
+    swap_wrapper :default, custom_wrapper_with_no_wrapping_tag do
+      with_form_for @user, :name
+      assert_select "div.custom_wrapper div.elem input.input_class_yo"
+      assert_select "div.custom_wrapper div.elem input.other_class_yo"
+      assert_select "div.custom_wrapper div.elem input.string"
+      assert_select "div.custom_wrapper div.elem label[data-yo='yo']"
+      assert_select "div.custom_wrapper div.elem span.custom_yo", :text => "custom"
+      assert_select "div.custom_wrapper div.elem label.both_yo"
+      assert_select "div.custom_wrapper div.elem input.both_yo"
+    end
+  end
+
+  test 'single element with wrap with and component options applies to both' do
+    swap_wrapper :default, custom_wrapper_with_wrapping_tag_and_component_options do
+      with_form_for @user, :name
+      assert_no_select "div.custom_wrapper > input"
+      assert_select "div.custom_wrapper div.wrap input.input_class_yo"
+      assert_select "div.custom_wrapper div.wrap input.other_class_yo"
+    end
+  end
+
+  test 'adding any option to tag components on the input ignores them' do
+    with_concat_form_for @user do |f|
+      concat f.input :name, :invalid => 'thing'
+    end
+    assert_no_select "input[invalid]"
+  end
+
+  test 'adding any option to tag components in wrapper makes html attributes' do
+    swap_wrapper :default, custom_wrapper_with_wrapping_tag_and_invalid_attributes do
+      with_input_for @user, :name, :string, :other_invalid => 'other_thing'
+      assert_select "input.input_class_yo"
+      assert_select "input[invalid='thing']"
+      assert_no_select "input[other_invalid]"
+    end
+  end
+
+  test 'adding invalid options to non-tag components raises an exception' do
+    assert_raise ArgumentError, "Invalid options [:class] passed to placeholder." do
+      swap_wrapper :default, custom_wrapper_with_invalid_options do
+        with_form_for @user, :name
+      end
+    end
+  end
+
   test 'do not duplicate label classes for different inputs' do
     swap_wrapper :default, self.custom_wrapper_with_label_html_option do
       with_concat_form_for(@user) do |f|

test/support/misc_helpers.rb

@@ -61,13 +61,48 @@ def custom_wrapper
         ba.use :label
         ba.use :input
       end
+      b.wrapper :arrays, class: ["class1", "class2"] do |ba|
+        ba.use :input, class: ["class3", "class4"]
+        ba.use :label
+      end
       b.wrapper :error_wrapper, tag: :div, class: "error_wrapper" do |be|
         be.use :error, wrap_with: { tag: :span, class: "omg_error" }
       end
       b.use :hint, wrap_with: { class: "omg_hint" }
     end
   end
 
+  def custom_wrapper_with_no_wrapping_tag
+    SimpleForm.build :tag => :div, :class => "custom_wrapper" do |b|
+      b.wrapper :tag => :div, :class => 'elem' do |component|
+        component.use :input, :class => ['input_class_yo', 'other_class_yo']
+        component.use :label, :"data-yo" => 'yo'
+        component.use :label_input, :class => 'both_yo'
+        component.use :custom_component, :class => 'custom_yo'
+      end
+    end
+  end
+
+  def custom_wrapper_with_wrapping_tag_and_component_options
+    SimpleForm.build :tag => :div, :class => 'custom_wrapper' do |b|
+      b.use :input, :class => ['input_class_yo', 'other_class_yo'], 
+        :wrap_with => { :tag => :div, :class => 'wrap' }
+    end
+  end
+
+  def custom_wrapper_with_wrapping_tag_and_invalid_attributes
+    SimpleForm.build :tag => :div, :class => "custom_wrapper" do |b|
+      b.use :input, :class => 'input_class_yo', :invalid => 'thing'
+    end
+  end
+
+  def custom_wrapper_with_invalid_options
+    SimpleForm.build :tag => :div, :class => "custom_wrapper" do |b|
+      b.use :placeholder, :class => 'no_effect'
+      b.use :input
+    end
+  end
+
   def custom_wrapper_with_wrapped_input
     SimpleForm.build tag: :div, class: "custom_wrapper" do |b|
       b.wrapper tag: :div, class: 'elem' do |component|
@@ -158,3 +193,16 @@ def input(attribute_name, *args, &block)
 class CustomMapTypeFormBuilder < SimpleForm::FormBuilder
   map_type :custom_type, to: SimpleForm::Inputs::StringInput
 end
+
+module SimpleForm::Components::CustomComponent
+  def custom_component
+    @custom_component ||= begin
+       custom_options = options[:custom_component_html]
+       template.content_tag(:span, custom_options) do
+         "custom".html_safe
+       end
+    end
+  end
+end
+
+SimpleForm::Inputs::Base.send(:include, SimpleForm::Components::CustomComponent)