metamaps--metamaps/app/services/perm.rb

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class Perm
# e.g. Perm::ISSIONS
ISSIONS = [:commons, :public, :private]
class << self
def short(permission)
case permission
when :commons
"co"
when :public
"pu"
when :private
"pr"
else
fail "Invalid permission"
end
end
def long(perm)
case perm
when "co"
:commons
when "pu"
:public
when "pr"
:private
else
fail "Invalid short permission"
end
end
def valid?(permission)
ISSIONS.include? permission
end
end
end