1. Rails 4
New Things:
a. No
attr_accessible: Need to understand
why you don’t need them, because there has to be some attributes that are
simply read-only with just getters and no setters.
2. Recursive
callbacks: Don’t be dumb!
a. If you call an after_save that updates attributes it
will call itself over and over until it is a stack error
b. You can use a not nil check for this type of
iteration and then after they are all done saving it will stop.
3. Geo Cities
Websites: The worst websites in the
world
a. Developers love them, it’s like sex to these people
haha.
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