Question

I’m still in the learning phase of Ruby and RoR, but I’ve already encountered a problem.
I’ve created a scaffold called Users with fields “name” and “password”.
Later on, I also added more fields such as “pin” and “salt”.

Now, while User.find_by_name and find_by_password work perfectly fine, for some reason, find_by_pin doesn’t seem to work. I’ve tried googling a bit but found nothing.

I also tried the same method in the ruby console (rails console) and for some reason, it works perfectly fine there – it returns the correct data just as expected.

Any ideas?

EDIT 1:

As somebody stated in the comments, let’s say I’m using this code: (yes, cookies[:pin] is set)

def get_user
    user = User.find_by_pin(cookies[:pin])
    if user.pin == cookies[:pin]
        'yes'
    end
end

and later I do this:

<%= get_user %>

it returns this:

undefined method `pin' for nil:NilClass

EDIT 2:

I tried this:

def get_user

    user = User.find_by_name('Crembo')
    user.pin  # returns 753e345a113471a6775e242f444704fe

    user = User.find_by_pin(user.pin)
    if user.nil?
        'is nil'
    else
        'exists'
    end
end

and it returns ‘is nil’. How does that make sense?

To extend that,

def pin_check
    user = User.find_by_name('Crembo')

    if user.pin == cookies[:pin]
        'true'
    else
        'false'
    end
end

returns true.

EDIT 3:

As asked in the comments, my User model:

class User < ActiveRecord::Base
    has_many :posts

    validates_uniqueness_of :name

    def password_matches?(password_to_match)
        self.password == Digest::SHA512.hexdigest(password_to_match)
    end
end

Answer 1

Ok, apparently the problem was SQLite. For some reason it decided that it will not work properly.
I switched to MySQL and now everything works perfectly fine.