Allow proc for value/text method in collection_select

And options_from_collection_for_select as well.

[Carlos Antonio da Silva + Rafael Mendonça França]

actionpack/lib/action_view/helpers/form_options_helper.rb

@@ -360,7 +360,7 @@ def options_for_select(container, selected = nil)
       # should produce the desired results.
       def options_from_collection_for_select(collection, value_method, text_method, selected = nil)
         options = collection.map do |element|
-          [element.send(text_method), element.send(value_method)]
+          [value_for_collection(element, text_method), value_for_collection(element, value_method)]
         end
         selected, disabled = extract_selected_and_disabled(selected)
         select_deselect = {
@@ -622,7 +622,7 @@ def extract_selected_and_disabled(selected)
             [selected, nil]
           else
             selected = Array.wrap(selected)
-            options  = selected.extract_options!.symbolize_keys
+            options = selected.extract_options!.symbolize_keys
             selected_items = options.fetch(:selected, selected)
             [selected_items, options[:disabled]]
           end
@@ -637,6 +637,10 @@ def extract_values_from_collection(collection, value_method, selected)
             selected
           end
         end
+
+        def value_for_collection(item, value)
+          value.respond_to?(:call) ? value.call(item) : item.send(value)
+        end
     end
 
     class FormBuilder

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

@@ -72,10 +72,6 @@ def render_collection #:nodoc:
             yield value, text, default_html_options
           end.join.html_safe
         end
-
-        def value_for_collection(item, value) #:nodoc:
-          value.respond_to?(:call) ? value.call(item) : item.send(value)
-        end
       end
     end
   end

actionpack/test/template/form_options_helper_test.rb

@@ -87,6 +87,20 @@ def test_collection_options_with_proc_for_disabled
     )
   end
 
+  def test_collection_options_with_proc_for_value_method
+    assert_dom_equal(
+      "<option value=\"&lt;Abe&gt;\">&lt;Abe&gt; went home</option>\n<option value=\"Babe\">Babe went home</option>\n<option value=\"Cabe\">Cabe went home</option>",
+      options_from_collection_for_select(dummy_posts, lambda { |p| p.author_name }, "title")
+    )
+  end
+
+  def test_collection_options_with_proc_for_text_method
+    assert_dom_equal(
+      "<option value=\"&lt;Abe&gt;\">&lt;Abe&gt; went home</option>\n<option value=\"Babe\">Babe went home</option>\n<option value=\"Cabe\">Cabe went home</option>",
+      options_from_collection_for_select(dummy_posts, "author_name", lambda { |p| p.title })
+    )
+  end
+
   def test_string_options_for_select
     options = "<option value=\"Denmark\">Denmark</option><option value=\"USA\">USA</option><option value=\"Sweden\">Sweden</option>"
     assert_dom_equal(
@@ -790,7 +804,25 @@ def test_collection_select_with_disabled
     assert_dom_equal(
       "<select id=\"post_author_name\" name=\"post[author_name]\"><option value=\"&lt;Abe&gt;\">&lt;Abe&gt;</option>\n<option value=\"Babe\" selected=\"selected\">Babe</option>\n<option value=\"Cabe\" disabled=\"disabled\">Cabe</option></select>",
       collection_select("post", "author_name", dummy_posts, "author_name", "author_name", :disabled => 'Cabe')
-       )
+    )
+  end
+
+  def test_collection_select_with_proc_for_value_method
+    @post = Post.new
+
+    assert_dom_equal(
+      "<select id=\"post_author_name\" name=\"post[author_name]\"><option value=\"&lt;Abe&gt;\">&lt;Abe&gt; went home</option>\n<option value=\"Babe\">Babe went home</option>\n<option value=\"Cabe\">Cabe went home</option></select>",
+      collection_select("post", "author_name", dummy_posts, lambda { |p| p.author_name }, "title")
+    )
+  end
+
+  def test_collection_select_with_proc_for_text_method
+    @post = Post.new
+
+    assert_dom_equal(
+      "<select id=\"post_author_name\" name=\"post[author_name]\"><option value=\"&lt;Abe&gt;\">&lt;Abe&gt; went home</option>\n<option value=\"Babe\">Babe went home</option>\n<option value=\"Cabe\">Cabe went home</option></select>",
+      collection_select("post", "author_name", dummy_posts, "author_name", lambda { |p| p.title })
+    )
   end
 
   def test_time_zone_select
@@ -1084,14 +1116,14 @@ def test_grouped_collection_select_under_fields_for
 
   private
 
-    def dummy_posts
-      [ Post.new("<Abe> went home", "<Abe>", "To a little house", "shh!"),
-        Post.new("Babe went home", "Babe", "To a little house", "shh!"),
-        Post.new("Cabe went home", "Cabe", "To a little house", "shh!") ]
-    end
+  def dummy_posts
+    [ Post.new("<Abe> went home", "<Abe>", "To a little house", "shh!"),
+      Post.new("Babe went home", "Babe", "To a little house", "shh!"),
+      Post.new("Cabe went home", "Cabe", "To a little house", "shh!") ]
+  end
 
-    def dummy_continents
-      [ Continent.new("<Africa>", [Country.new("<sa>", "<South Africa>"), Country.new("so", "Somalia")] ),
-       Continent.new("Europe", [Country.new("dk", "Denmark"), Country.new("ie", "Ireland")] ) ]
-    end
+  def dummy_continents
+    [ Continent.new("<Africa>", [Country.new("<sa>", "<South Africa>"), Country.new("so", "Somalia")]),
+      Continent.new("Europe", [Country.new("dk", "Denmark"), Country.new("ie", "Ireland")]) ]
+  end
 end