[Rails] Re: Why returns nil?

>
> # since 'user = find_by_email(email)' was the last evaluated expression
>

Wrong. In case user doesn't match password then last evaluated statement
was

if user.has_password?(submitted_password)

which is a 'if modifier' for 'return user' statement; and it returned
nil. See from irb session:

ruby-1.9.2-p0 > true if false
=> nil
ruby-1.9.2-p0 > true if true
=> true

In case 'if modifier' evaluates to false it will return nil - which is
exactly your case.

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