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Contents
# From:
# http://www.bigbold.com/snippets/posts/show/2178
# http://blog.caboo.se/articles/2006/06/11/stupid-hash-tricks
#
# An example utilisation of these methods in a controller is:
# def some_action
# # some script kiddie also passed in :bee, which we don't want tampered with _here_.
# @model = Model.create(params.pass(:foo, :bar))
# end
class Hash
# lets through the keys in the argument
# >> {:one => 1, :two => 2, :three => 3}.pass(:one)
# => {:one=>1}
def pass(*keys)
keys = keys.first if keys.first.is_a?(Array)
tmp = self.clone
tmp.delete_if {|k,v| ! keys.include?(k.to_sym) }
tmp.delete_if {|k,v| ! keys.include?(k.to_s) }
tmp
end
# blocks the keys in the arguments
# >> {:one => 1, :two => 2, :three => 3}.block(:one)
# => {:two=>2, :three=>3}
def block(*keys)
keys = keys.first if keys.first.is_a?(Array)
tmp = self.clone
tmp.delete_if {|k,v| keys.include?(k.to_sym) }
tmp.delete_if {|k,v| keys.include?(k.to_s) }
tmp
end
end
Version data entries
23 entries across 23 versions & 1 rubygems