Merge pull request #17702 from tgxworld/fix_select_tag_include_blank_false

Fix select_tag generating tag when set to false.

actionview/lib/action_view/helpers/form_tag_helper.rb

@@ -140,7 +140,9 @@ def select_tag(name, option_tags = nil, options = {})
             include_blank = ''
           end
 
-          option_tags = content_tag(:option, include_blank, value: '').safe_concat(option_tags)
+          if include_blank
+            option_tags = content_tag(:option, include_blank, value: '').safe_concat(option_tags)
+          end
         end
 
         if prompt = options.delete(:prompt)

actionview/test/template/form_tag_helper_test.rb

@@ -232,6 +232,12 @@ def test_select_tag_with_include_blank
     assert_dom_equal expected, actual
   end
 
+  def test_select_tag_with_include_blank_false
+    actual = select_tag "places", "<option>Home</option><option>Work</option><option>Pub</option>".html_safe, include_blank: false
+    expected = %(<select id="places" name="places"><option>Home</option><option>Work</option><option>Pub</option></select>)
+    assert_dom_equal expected, actual
+  end
+
   def test_select_tag_with_include_blank_string
     actual = select_tag "places", "<option>Home</option><option>Work</option><option>Pub</option>".html_safe, include_blank: 'Choose'
     expected = %(<select id="places" name="places"><option value="">Choose</option><option>Home</option><option>Work</option><option>Pub</option></select>)