add components that don't generate tags for input_field

closes #632

Conflicts:

	lib/simple_form/form_builder.rb

Conflicts:

	lib/simple_form/form_builder.rb

CHANGELOG.md

@@ -9,6 +9,10 @@
 ## 2.1.0.dev
 
 ### enhancements
+  * `input_field` supports components that don't generate tags
+    as `:min_max`, `:maxlength`, `:placeholder`, `:pattern`, `:readonly`.
+    Closes[#362](https://github.com/plataformatec/simple_form/issues/632).
+    ([@nashby](https://github.com/nashby))
   * support for Rails eager loading.
     Closes [#478](https://github.com/plataformatec/simple_form/issues/478).
   * generate required attribute for `date_time` input.

lib/simple_form/form_builder.rb

@@ -138,7 +138,7 @@ module SimpleForm
       options[:input_html] = options.except(:as, :collection, :label_method, :value_method)
       options = @defaults.deep_dup.deep_merge(options) if @defaults
 
-      SimpleForm::Wrappers::Root.new([:input], wrapper: false).render find_input(attribute_name, options)
+      SimpleForm::Wrappers::Root.new([:min_max, :maxlength, :placeholder, :pattern, :readonly, :input], wrapper: false).render find_input(attribute_name, options)
     end
 
     # Helper for dealing with association selects/radios, generating the

test/form_builder/input_field_test.rb

@@ -50,6 +50,51 @@ class InputFieldTest < ActionView::TestCase
     assert_no_select 'input.integer[as]'
   end
 
+  test 'builder input_field should use i18n to translate placeholder text' do
+    store_translations(:en, simple_form: { placeholders: { user: {
+      name: 'Name goes here'
+    } } }) do
+
+      with_concat_form_for(@user) do |f|
+        f.input_field :name
+      end
+
+      assert_select 'input.string[placeholder=Name goes here]'
+    end
+  end
+
+  test 'builder input_field should use min_max component' do
+    with_concat_form_for(@other_validating_user) do |f|
+      f.input_field :age, as: :integer
+    end
+
+    assert_select 'input[min=18]'
+  end
+
+  test 'builder input_field should use pattern component' do
+    with_concat_form_for(@other_validating_user) do |f|
+      f.input_field :country, as: :string
+    end
+
+    assert_select 'input[pattern="\w+"]'
+  end
+
+  test 'builder input_field should use readonly component' do
+    with_concat_form_for(@other_validating_user) do |f|
+      f.input_field :age, as: :integer, readonly: true
+    end
+
+    assert_select 'input.integer.readonly[readonly]'
+  end
+
+  test 'builder input_field should use maxlength component' do
+    with_concat_form_for(@validating_user) do |f|
+      f.input_field :name, as: :string
+    end
+
+    assert_select 'input.string[maxlength=25]'
+  end
+
   test 'builder collection input_field should generate input tag with a clean HTML' do
     with_concat_form_for(@user) do |f|
       f.input_field :status, collection: ['Open', 'Closed'], class: 'status', label_method: :to_s, value_method: :to_s