Add the ability of returning arbitrary headers to ActionDispatch::Static

Now ActionDispatch::Static can accept HTTP headers so that developers
will have control of returning arbitrary headers like
'Access-Control-Allow-Origin' when a response is delivered. They can
be configured through `#config.public_file_server.headers`:

  config.public_file_server.headers = {
    "Cache-Control"               => "public, max-age=60",
    "Access-Control-Allow-Origin" => "http://rubyonrails.org"
  }

Also deprecate `config.static_cache_control` in favor of
`config.public_file_server.headers`.

1 files changed, 19 insertions, 0 deletions

diff --git a/actionpack/CHANGELOG.md b/actionpack/CHANGELOG.md
index 78ae506389..2dabadcf3d 100644
--- a/actionpack/CHANGELOG.md
+++ b/actionpack/CHANGELOG.md
@@ -1,3 +1,22 @@
+*   Deprecate `config.static_cache_control` in favor of
+    `config.public_file_server.headers`
+
+    *Yuki Nishijima*
+
+*   Add the ability of returning arbitrary headers to ActionDispatch::Static
+
+    Now ActionDispatch::Static can accept HTTP headers so that developers
+    will have control of returning arbitrary headers like
+    'Access-Control-Allow-Origin' when a response is delivered. They can be
+    configured with `#config`:
+
+      config.public_file_server.headers = {
+        "Cache-Control"               => "public, max-age=60",
+        "Access-Control-Allow-Origin" => "http://rubyonrails.org"
+      }
+
+    *Yuki Nishijima*
+
 *   Adds`Rack::Utils::ParameterTypeError` and `Rack::Utils::InvalidParameterError`
     to the rescue_responses hash in `ExceptionWrapper` (Rack recommends
     integrators serve 400s for both of these).