id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
30071	Obscure error message when no default db provided	Benjy Weinberger	Benjy Weinberger	"In `ConnectionHandler`, the explicit check for the `DEFAULT_DB_ALIAS`
key in the databases dict comes only after an attempt to lookup that key.

If you have at least one non-default db, but no default db, no dummy
default will be created for you, and the `DEFAULT_DB_ALIAS` key will
not be present. Under these circumstances, referencing the `databases`
property directly will give a `KeyError` instead of the intended
`ImproperlyConfigured` error.

Worse, if you try to access a non-default db, `ensure_defaults` will
catch that `KeyError` but misinterpret it as being for the non-default
db name (which does in fact exist in the dict).
"	Bug	closed	Database layer (models, ORM)	2.1	Normal	fixed			Accepted	1	0	0	0	0	0