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-rwxr-xr-xactionpack/lib/action_controller/base.rb3
1 files changed, 3 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/base.rb b/actionpack/lib/action_controller/base.rb
index e7fd6d8968..b90cf7f8bf 100755
--- a/actionpack/lib/action_controller/base.rb
+++ b/actionpack/lib/action_controller/base.rb
@@ -549,6 +549,9 @@ module ActionController #:nodoc:
# # each win partial.
# render :partial => "win", :collection => @wins, :spacer_template => "win_divider"
#
+ # Note that the partial filename must also be a valid Ruby variable name,
+ # so e.g. 2005 and register-user are invalid.
+ #
# _Deprecation_ _notice_: This used to have the signatures
# <tt>render_partial(partial_path = default_template_name, object = nil, local_assigns = {})</tt> and
# <tt>render_partial_collection(partial_name, collection, partial_spacer_template = nil, local_assigns = {})</tt>.