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slice_and_except

🗂️ slice and except for Subset Isolation​

Select or reject key subsets efficiently. ActiveSupport adds slice/slice! and except/except!, making it easy to restrict a Hash to only desired keys or drop sensitive ones.

params = {id: 1, name: 'Jane', password: 'secret', role: 'admin'}

public_params = params.slice(:id, :name, :role)
# => {:id=>1, :name=>"Jane", :role=>"admin"}

safe = params.except(:password)
# => {:id=>1, :name=>"Jane", :role=>"admin"}