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Deep Stringify Keys of hash even with embedded arrays
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def transform_hash(original, options={}, &block) | |
original.inject({}){|result, (key,value)| | |
value = if (options[:deep] && Hash === value) | |
transform_hash(value, options, &block) | |
else | |
if Array === value | |
value.map{|v| transform_hash(v, options, &block)} | |
else | |
value | |
end | |
end | |
block.call(result,key,value) | |
result | |
} | |
end | |
# Convert keys to strings | |
def stringify_keys(hash) | |
transform_hash(hash) {|hash, key, value| | |
hash[key.to_s] = value | |
} | |
end | |
# Convert keys to strings, recursively | |
def deep_stringify_keys(hash) | |
transform_hash(hash, :deep => true) {|hash, key, value| | |
hash[key.to_s] = value | |
} | |
end | |
h1 = {a: {b: "c", d: [{a: "test", b: "test 2"},{a: "test 3"}]}} | |
puts h1 | |
puts stringify_keys(h1) | |
puts deep_stringify_keys(h1) |
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