Clarify 'database does not exist' message and implementation.

* Clarify what the situation is and what to do.
* Advise loading schema using `rake db:setup` instead of migrating.
* Use a rescue in the initializer rather than extending the error
  message in-place.
* Preserve the original backtrace of other errors by using `raise`
  rather than raising again with `raise error`.

References 0ec45cd15d0a2f5aebc75e23d841b6c12f3ba763

1 files changed, 1 insertions, 9 deletions

diff --git a/activerecord/lib/active_record/errors.rb b/activerecord/lib/active_record/errors.rb
index 7f6228131f..71efbb8f93 100644
--- a/activerecord/lib/active_record/errors.rb
+++ b/activerecord/lib/active_record/errors.rb
@@ -95,15 +95,7 @@ module ActiveRecord
   end
 
   # Raised when a given database does not exist
-  class NoDatabaseError < ActiveRecordError
-    def initialize(message)
-      super extend_message(message)
-    end
-
-    # can be over written to add additional error information.
-    def extend_message(message)
-      message
-    end
+  class NoDatabaseError < StatementInvalid
   end
 
   # Raised on attempt to save stale record. Record is stale when it's being saved in another query after