On Rails::Initializer, configuration.load_once_paths is frozen but
config.load_paths is not.
We need to freeze them so future modifications will fail rather than
do nothing mysteriously. For example, I was changing the variable on
my environment/development.rb and the path I was setting was never
loaded.
To fix, just add the line:
configuration.load_paths.freeze
To railties/lib/initializer.rb, method set_autoload_paths, around line
214.
So we will have:
def set_autoload_paths
Dependencies.load_paths = configuration.load_paths.uniq
Dependencies.load_once_paths = configuration.load_once_paths.uniq
extra = Dependencies.load_once_paths - Dependencies.load_paths
unless extra.empty?
abort <<-end_error
load_once_paths must be a subset of the load_paths.
Extra items in load_once_paths: #{extra * '',''}
end_error
end
# Freeze the arrays so future modifications will fail rather than
do nothing mysteriously
configuration.load_paths.freeze
configuration.load_once_paths.freeze
end
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