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 23338,Warn when unique=True is set on ForeignKey,Curtis Maloney,Tim Graham ,"Long ago in the dark times before 1.0, there was a bug in Admin that meant using ForeignKey(unique=True) was preferable to using a OneToOneField. Somehow, people (on IRC) are still doing this -- even new users-- , and I can't figure out why. Unless I'm missing something, there is no case where a ForeignKey(unique=True) is preferable to a OneToOneField. Shouldn't we, then, at least add a check/warn to say this?",New feature,closed,Core (System checks),dev,Normal,fixed,,,Ready for checkin,1,0,0,0,0,0