Add weekday input.

Closes #1770

CHANGELOG.md

@@ -1,6 +1,7 @@
 ## Unreleased
 
 * Remove redundant `aria-required` attribute for required fields. [@aduth](https://github.com/aduth)
+* Add `weekday` input. [@nashby](https://github.com/nashby)
 
 ## 5.3.1
 

README.md

@@ -621,6 +621,7 @@ Mapping         | Generated HTML Element               | Database Column Type
 `datetime`      | `datetime select`                    | `datetime/timestamp`
 `date`          | `date select`                        | `date`
 `time`          | `time select`                        | `time`
+`weekday`       | `select` (weekdays as options)       | -
 `select`        | `select`                             | `belongs_to`/`has_many`/`has_and_belongs_to_many` associations
 `radio_buttons` | collection of `input[type=radio]`    | `belongs_to` associations
 `check_boxes`   | collection of `input[type=checkbox]` | `has_many`/`has_and_belongs_to_many` associations

lib/simple_form/inputs.rb

@@ -22,5 +22,6 @@ module Inputs
     autoload :RichTextAreaInput
     autoload :StringInput
     autoload :TextInput
+    autoload :WeekdayInput
   end
 end

lib/simple_form/inputs/weekday_input.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+module SimpleForm
+  module Inputs
+    class WeekdayInput < CollectionSelectInput
+      enable :placeholder
+
+      def input(wrapper_options = nil)
+        merged_input_options = merge_wrapper_options(input_html_options, wrapper_options)
+
+        @builder.weekday_select(attribute_name, input_options, merged_input_options)
+      end
+    end
+  end
+end

test/inputs/weekday_input_test.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+# encoding: UTF-8
+require 'test_helper'
+
+class WeekdayInputTest < ActionView::TestCase
+  test 'input generates a weekday select' do
+    with_input_for @user, :born_at, :weekday
+    assert_select 'select.weekday#user_born_at'
+  end
+
+  test 'input generates a weekday select that accepts placeholder' do
+    with_input_for @user, :born_at, :weekday, placeholder: 'Put in a weekday'
+    assert_select 'select.weekday[placeholder="Put in a weekday"]'
+  end
+end