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-rw-r--r--railties/lib/rails/engine.rb6
1 files changed, 4 insertions, 2 deletions
diff --git a/railties/lib/rails/engine.rb b/railties/lib/rails/engine.rb
index 62fb781c19..85fa4424c4 100644
--- a/railties/lib/rails/engine.rb
+++ b/railties/lib/rails/engine.rb
@@ -363,8 +363,10 @@ module Rails
_railtie
end
- define_method(:table_name_prefix) do
- "#{name}_"
+ unless mod.respond_to?(:table_name_prefix)
+ define_method(:table_name_prefix) do
+ "#{name}_"
+ end
end
end
end