Merge pull request #5016 from exviva/form_helper_date_fields

Add HTML5 input[type="date"] helper

actionpack/CHANGELOG.md

 ## Rails 4.0.0 (unreleased) ##
 
+*   Add `date_field` and `date_field_tag` helpers which render an `input[type="date"]` tag *Olek Janiszewski*
+
 *   Adds `image_url`, `javascript_url`, `stylesheet_url`, `audio_url`, `video_url`, and `font_url`
     to assets tag helper. These URL helpers will return the full path to your assets. This is useful
     when you are going to reference this asset from external host. *Prem Sichanugrist*

actionpack/lib/action_view/helpers/form_helper.rb

@@ -889,6 +889,24 @@ def telephone_field(object_name, method, options = {})
       end
       alias phone_field telephone_field
 
+      # Returns a text_field of type "date".
+      #
+      #   date_field("user", "born_on")
+      #   # => <input id="user_born_on" name="user[born_on]" type="date" />
+      #
+      # The default value is generated by trying to call "to_date"
+      # on the object's value, which makes it behave as expected for instances
+      # of DateTime and ActiveSupport::TimeWithZone. You can still override that
+      # by passing the "value" option explicitly, e.g.
+      #
+      #   @user.born_on = Date.new(1984, 1, 27)
+      #   date_field("user", "born_on", value: "1984-05-12")
+      #   # => <input id="user_born_on" name="user[born_on]" type="date" value="1984-05-12" />
+      #
+      def date_field(object_name, method, options = {})
+        Tags::DateField.new(object_name, method, self, options).render
+      end
+
       # Returns a text_field of type "url".
       #
       #   url_field("user", "homepage")

actionpack/lib/action_view/helpers/form_tag_helper.rb

@@ -549,6 +549,14 @@ def telephone_field_tag(name, value = nil, options = {})
       end
       alias phone_field_tag telephone_field_tag
 
+      # Creates a text field of type "date".
+      #
+      # ==== Options
+      # * Accepts the same options as text_field_tag.
+      def date_field_tag(name, value = nil, options = {})
+        text_field_tag(name, value, options.stringify_keys.update("type" => "date"))
+      end
+
       # Creates a text field of type "url".
       #
       # ==== Options

actionpack/lib/action_view/helpers/tags.rb

@@ -8,6 +8,7 @@ module Tags #:nodoc:
       autoload :CollectionCheckBoxes
       autoload :CollectionRadioButtons
       autoload :CollectionSelect
+      autoload :DateField
       autoload :DateSelect
       autoload :DatetimeSelect
       autoload :EmailField

actionpack/lib/action_view/helpers/tags/base.rb

@@ -36,7 +36,7 @@ def value_before_type_cast(object)
 
             object.respond_to?(method_before_type_cast) ?
               object.send(method_before_type_cast) :
-              object.send(@method_name)
+              value(object)
           end
         end
 

actionpack/lib/action_view/helpers/tags/date_field.rb

+module ActionView
+  module Helpers
+    module Tags
+      class DateField < TextField #:nodoc:
+        def render
+          options = @options.stringify_keys
+          options["value"] = @options.fetch("value") { value(object).try(:to_date) }
+          options["size"] = nil
+          @options = options
+          super
+        end
+      end
+    end
+  end
+end

actionpack/test/template/form_helper_test.rb

@@ -514,6 +514,32 @@ def test_telephone_field
     assert_dom_equal(expected, telephone_field("user", "cell"))
   end
 
+  def test_date_field
+    expected = %{<input id="post_written_on" name="post[written_on]" type="date" value="2004-06-15" />}
+    assert_dom_equal(expected, date_field("post", "written_on"))
+  end
+
+  def test_date_field_with_datetime_value
+    expected = %{<input id="post_written_on" name="post[written_on]" type="date" value="2004-06-15" />}
+    @post.written_on = DateTime.new(2004, 6, 15, 1, 2, 3)
+    assert_dom_equal(expected, date_field("post", "written_on"))
+  end
+
+  def test_date_field_with_timewithzone_value
+    previous_time_zone, Time.zone = Time.zone, 'UTC'
+    expected = %{<input id="post_written_on" name="post[written_on]" type="date" value="2004-06-15" />}
+    @post.written_on = Time.zone.parse('2004-06-15 15:30:45')
+    assert_dom_equal(expected, date_field("post", "written_on"))
+  ensure
+    Time.zone = previous_time_zone
+  end
+
+  def test_date_field_with_nil_value
+    expected = %{<input id="post_written_on" name="post[written_on]" type="date" />}
+    @post.written_on = nil
+    assert_dom_equal(expected, date_field("post", "written_on"))
+  end
+
   def test_url_field
     expected = %{<input id="user_homepage" size="30" name="user[homepage]" type="url" />}
     assert_dom_equal(expected, url_field("user", "homepage"))

actionpack/test/template/form_tag_helper_test.rb

@@ -457,11 +457,16 @@ def test_search_field_tag
     assert_dom_equal(expected, search_field_tag("query"))
   end
 
-  def telephone_field_tag
+  def test_telephone_field_tag
     expected = %{<input id="cell" name="cell" type="tel" />}
     assert_dom_equal(expected, telephone_field_tag("cell"))
   end
 
+  def test_date_field_tag
+    expected = %{<input id="cell" name="cell" type="date" />}
+    assert_dom_equal(expected, date_field_tag("cell"))
+  end
+
   def test_url_field_tag
     expected = %{<input id="homepage" name="homepage" type="url" />}
     assert_dom_equal(expected, url_field_tag("homepage"))

railties/guides/source/form_helpers.textile

@@ -150,7 +150,7 @@ NOTE: Always use labels for checkbox and radio buttons. They associate text with
 
 h4. Other Helpers of Interest
 
-Other form controls worth mentioning are textareas, password fields, hidden fields, search fields, telephone fields, URL fields and email fields:
+Other form controls worth mentioning are textareas, password fields, hidden fields, search fields, telephone fields, date fields, URL fields and email fields:
 
 <erb>
 <%= text_area_tag(:message, "Hi, nice site", :size => "24x6") %>
@@ -158,6 +158,7 @@ Other form controls worth mentioning are textareas, password fields, hidden fiel
 <%= hidden_field_tag(:parent_id, "5") %>
 <%= search_field(:user, :name) %>
 <%= telephone_field(:user, :phone) %>
+<%= date_field(:user, :born_on) %>
 <%= url_field(:user, :homepage) %>
 <%= email_field(:user, :address) %>
 </erb>
@@ -170,13 +171,14 @@ Output:
 <input id="parent_id" name="parent_id" type="hidden" value="5" />
 <input id="user_name" name="user[name]" size="30" type="search" />
 <input id="user_phone" name="user[phone]" size="30" type="tel" />
+<input id="user_born_on" name="user[born_on]" type="date" />
 <input id="user_homepage" size="30" name="user[homepage]" type="url" />
 <input id="user_address" size="30" name="user[address]" type="email" />
 </html>
 
 Hidden inputs are not shown to the user but instead hold data like any textual input. Values inside them can be changed with JavaScript.
 
-IMPORTANT: The search, telephone, URL, and email inputs are HTML5 controls. If you require your app to have a consistent experience in older browsers, you will need an HTML5 polyfill (provided by CSS and/or JavaScript). There is definitely "no shortage of solutions for this":https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-Browser-Polyfills, although a couple of popular tools at the moment are "Modernizr":http://www.modernizr.com/ and "yepnope":http://yepnopejs.com/, which provide a simple way to add functionality based on the presence of detected HTML5 features.
+IMPORTANT: The search, telephone, date, URL, and email inputs are HTML5 controls. If you require your app to have a consistent experience in older browsers, you will need an HTML5 polyfill (provided by CSS and/or JavaScript). There is definitely "no shortage of solutions for this":https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-Browser-Polyfills, although a couple of popular tools at the moment are "Modernizr":http://www.modernizr.com/ and "yepnope":http://yepnopejs.com/, which provide a simple way to add functionality based on the presence of detected HTML5 features.
 
 TIP: If you're using password input fields (for any purpose), you might want to configure your application to prevent those parameters from being logged. You can learn about this in the "Security Guide":security.html#logging.
 
@@ -467,7 +469,7 @@ Rails _used_ to have a +country_select+ helper for choosing countries, but this
 
 h3. Using Date and Time Form Helpers
 
-The date and time helpers differ from all the other form helpers in two important respects:
+You can choose not to use the form helpers generating HTML5 date input fields and use the alternative date and time helpers. These date and time helpers differ from all the other form helpers in two important respects:
 
 # Dates and times are not representable by a single input element. Instead you have several, one for each component (year, month, day etc.) and so there is no single value in your +params+ hash with your date or time.
 # Other helpers use the +_tag+ suffix to indicate whether a helper is a barebones helper or one that operates on model objects. With dates and times, +select_date+, +select_time+ and +select_datetime+ are the barebones helpers, +date_select+, +time_select+ and +datetime_select+ are the equivalent model object helpers.