diff --git a/actionview/lib/action_view/helpers/tag_helper.rb b/actionview/lib/action_view/helpers/tag_helper.rb
index 0944acba2206fe28aad1e682916608bf2f656254..ffb364dce16684ea6fcadb8dff12195a64ebe4d3 100644
--- a/actionview/lib/action_view/helpers/tag_helper.rb
+++ b/actionview/lib/action_view/helpers/tag_helper.rb
@@ -94,7 +94,7 @@ def boolean_tag_option(key)
         def tag_option(key, value, escape)
           case value
           when Array, Hash
-            value = build_tag_values(value)
+            value = build_tag_values(value) if key.to_s == "class"
             value = escape ? safe_join(value, " ") : value.join(" ")
           else
             value = escape ? ERB::Util.unwrapped_html_escape(value) : value.to_s
@@ -109,14 +109,14 @@ def build_tag_values(*args)
 
             args.each do |tag_value|
               case tag_value
-              when String
-                tag_values << tag_value if tag_value.present?
               when Hash
                 tag_value.each do |key, val|
                   tag_values << key if val
                 end
               when Array
                 tag_values << build_tag_values(*tag_value).presence
+              else
+                tag_values << tag_value.to_s if tag_value.present?
               end
             end
 
diff --git a/actionview/test/template/tag_helper_test.rb b/actionview/test/template/tag_helper_test.rb
index 93d923055cabbe918e6d638366d7967d1ebe8e65..44496bce9b56fd7b772b16c67c8b5a1bb9a98db5 100644
--- a/actionview/test/template/tag_helper_test.rb
+++ b/actionview/test/template/tag_helper_test.rb
@@ -37,6 +37,24 @@ def test_tag_options
     assert_match(/class="elsewhere"/, str)
   end
 
+  def test_tag_options_with_array_of_numeric
+    str = tag(:input, value: [123, 456])
+
+    assert_equal("<input value=\"123 456\" />", str)
+  end
+
+  def test_tag_options_with_array_of_random_objects
+    klass = Class.new do
+      def to_s
+        "hello"
+      end
+    end
+
+    str = tag(:input, value: [klass.new])
+
+    assert_equal("<input value=\"hello\" />", str)
+  end
+
   def test_tag_options_rejects_nil_option
     assert_equal "<p />", tag("p", ignored: nil)
   end
@@ -262,6 +280,18 @@ def test_content_tag_with_conditional_hash_classes
     str = content_tag("p", "limelight", class: ["song", { foo: false }])
     assert_equal "<p class=\"song\">limelight</p>", str
 
+    str = content_tag("p", "limelight", class: [1, 2, 3])
+    assert_equal "<p class=\"1 2 3\">limelight</p>", str
+
+    klass = Class.new do
+      def to_s
+        "1"
+      end
+    end
+
+    str = content_tag("p", "limelight", class: [klass.new])
+    assert_equal "<p class=\"1\">limelight</p>", str
+
     str = content_tag("p", "limelight", class: { "song": true, "play": true })
     assert_equal "<p class=\"song play\">limelight</p>", str