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-rw-r--r--actionview/lib/action_view/template/handlers/erb.rb18
1 files changed, 18 insertions, 0 deletions
diff --git a/actionview/lib/action_view/template/handlers/erb.rb b/actionview/lib/action_view/template/handlers/erb.rb
index 85a100ed4c..88a8570706 100644
--- a/actionview/lib/action_view/template/handlers/erb.rb
+++ b/actionview/lib/action_view/template/handlers/erb.rb
@@ -123,6 +123,24 @@ module ActionView
).src
end
+ # Returns Regexp to extract a cached resource's name from a cache call at the
+ # first line of a template.
+ # The extracted cache name is expected in $1.
+ #
+ # <% cache notification do %> # => notification
+ #
+ # The pattern should support templates with a beginning comment:
+ #
+ # <%# Still extractable even though there's a comment %>
+ # <% cache notification do %> # => notification
+ #
+ # But fail to extract a name if a resource association is cached.
+ #
+ # <% cache notification.event do %> # => nil
+ def resource_cache_call_pattern
+ /\A(?:<%#.*%>\n?)?<% cache\(?\s*(\w+\.?)/
+ end
+
private
def valid_encoding(string, encoding)