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Contents
module Ecoportal
module API
module Common
module HashDiff
ID_KEYS = %w[id]
class << self
def diff(a, b)
return a if a.class != b.class
case a
when Hash
{}.tap do |diffed|
a.each do |key, a_value|
b_value = b[key]
next if a_value == b_value && !ID_KEYS.include?(key)
diffed[key] = diff(a_value, b_value)
diffed.delete(key) if diffed[key] == {}
end
# All keys are IDs, so it's actually blank
if (diffed.keys - ID_KEYS).empty?
return {}
end
end
when Array
return a unless a.length == b.length
a.map.with_index do |a_value, idx|
b_value = b[idx]
diff(a_value, b_value)
end.reject do |el|
el == {}
end
else
a
end
end
end
end
end
end
end
Version data entries
18 entries across 18 versions & 1 rubygems