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Versions: 9
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Stored size: 1.17 KB
Contents
# encoding: UTF-8
require 'hashie'
require 'hashie/extensions/deep_merge'
class Hash
include Hashie::Extensions::DeepMerge
# Return a hash that includes everything but the given keys. This is useful for
# limiting a set of parameters to everything but a few known toggles:
#
# @person.update_attributes(params[:person].except(:admin))
#
# If the receiver responds to +convert_key+, the method is called on each of the
# arguments. This allows +except+ to play nice with hashes with indifferent access
# for instance:
#
# {:a => 1}.with_indifferent_access.except(:a) # => {}
# {:a => 1}.with_indifferent_access.except("a") # => {}
#
def except(*keys)
dup.except!(*keys)
end
# Replaces the hash without the given keys.
def except!(*keys)
keys.each { |key| delete(key) }
self
end
def undot
# for each key-value config given
hashes = map do |k, v|
# dot notation to hash
k.split('__').reverse.reduce(v) do |memo, obj|
{ obj => memo }.extend(Hashie::Extensions::DeepMerge)
end
end
# merge back the keys as they came
hashes.reduce do |memo, obj|
memo.deep_merge(obj)
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems