Activeadmin admin#login page template should respect devise authentication_keys config #69
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I installed activeadmin to a site where I had already implemented devise for authentication. I was getting an error because I had set my authentication key to a nondefault field ('login'):
config.authentication_keys = [ :login ]
This is a one-line change to create the login page using the authentication keys setting rather than the hardcoded 'email' field to make it easier for projects already using devise to use activeadmin.