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@moeffju
Created January 30, 2012 14:16
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class User < ActiveRecord::Base
alias :devise_valid_password? :valid_password?
def valid_password?(password)
begin
devise_valid_password?(password)
rescue BCrypt::Errors::InvalidHash
return false unless Digest::SHA1.hexdigest(password) == encrypted_password
logger.info "User #{email} is using the old password hashing method, updating attribute."
self.password = password
true
end
end
end
@jozefvaclavik
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Thanks for great example! You saved me some time today :-)

One more tip. If you are using salt in legacy user, its also good to clear that value. This way you will know how many users has already been updated. And I also had to manually save loaded object.

self.password = password
self.salt = nil
self.save
true

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