Edit user without password in active admin

thanks for sharing!
there is also nice solution: http://stackoverflow.com/a/11676957/1171144

controller do
  def update_resource object, attributes
    attributes.each do |attr|
      if attr[:password].blank? and attr[:password_confirmation].blank?
        attr.delete :password
        attr.delete :password_confirmation
      end
    end

    object.send :update_attributes, *attributes
  end
end

I find this cleaner,
controller do def update if params[:user][:password].blank? params[:user].delete("password") end super end end </code>

I think Jan's solution works great with devise.

Great, thanks