Difference between prepend and append filters

rails-prepend-append.md

Note : This is as of rails 2.3.5. The methods might have been deprecated or the behavior might have changed in the latest versions of Rails.

prepend_before_filter and append_before_filter are almost the same.

They differ only in precedence. Prepend filters have higher precedence over append filters.

before_filter is an alias to append_before_filter

class MyController < ActionController::Base

before_filter :some_name #this gets called after some_other_name
prepend_before_filter :some_other_name # this gets called first

......
.....
end