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-rw-r--r--actionpack/lib/action_dispatch/http/response.rb23
1 files changed, 15 insertions, 8 deletions
diff --git a/actionpack/lib/action_dispatch/http/response.rb b/actionpack/lib/action_dispatch/http/response.rb
index 9788431943..e8173e2a99 100644
--- a/actionpack/lib/action_dispatch/http/response.rb
+++ b/actionpack/lib/action_dispatch/http/response.rb
@@ -224,8 +224,10 @@ module ActionDispatch # :nodoc:
# Sets the HTTP content type.
def content_type=(content_type)
- header_info = parse_content_type
- set_content_type content_type.to_s, header_info.charset || self.class.default_charset
+ return unless content_type
+ new_header_info = parse_content_type(content_type.to_s)
+ prev_header_info = parsed_content_type_header
+ set_content_type new_header_info.mime_type, new_header_info.charset || prev_header_info.charset || self.class.default_charset
end
# Sets the HTTP response's content MIME type. For example, in the controller
@@ -238,7 +240,7 @@ module ActionDispatch # :nodoc:
# information.
def content_type
- parse_content_type.mime_type
+ parsed_content_type_header.mime_type
end
def sending_file=(v)
@@ -253,7 +255,7 @@ module ActionDispatch # :nodoc:
# response.charset = 'utf-16' # => 'utf-16'
# response.charset = nil # => 'utf-8'
def charset=(charset)
- header_info = parse_content_type
+ header_info = parsed_content_type_header
if false == charset
set_header CONTENT_TYPE, header_info.mime_type
else
@@ -265,7 +267,7 @@ module ActionDispatch # :nodoc:
# The charset of the response. HTML wants to know the encoding of the
# content you're giving them, so we need to send that along.
def charset
- header_info = parse_content_type
+ header_info = parsed_content_type_header
header_info.charset || self.class.default_charset
end
@@ -403,8 +405,7 @@ module ActionDispatch # :nodoc:
ContentTypeHeader = Struct.new :mime_type, :charset
NullContentTypeHeader = ContentTypeHeader.new nil, nil
- def parse_content_type
- content_type = get_header CONTENT_TYPE
+ def parse_content_type(content_type)
if content_type
type, charset = content_type.split(/;\s*charset=/)
type = nil if type.empty?
@@ -414,6 +415,12 @@ module ActionDispatch # :nodoc:
end
end
+ # Small internal convenience method to get the parsed version of the current
+ # content type header.
+ def parsed_content_type_header
+ parse_content_type(get_header(CONTENT_TYPE))
+ end
+
def set_content_type(content_type, charset)
type = (content_type || "").dup
type << "; charset=#{charset}" if charset
@@ -450,7 +457,7 @@ module ActionDispatch # :nodoc:
def assign_default_content_type_and_charset!
return if content_type
- ct = parse_content_type
+ ct = parsed_content_type_header
set_content_type(ct.mime_type || Mime[:html].to_s,
ct.charset || self.class.default_charset)
end