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author | Lawrence Pit <lawrence.pit@gmail.com> | 2008-07-14 11:53:41 +1000 |
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committer | Pratik Naik <pratiknaik@gmail.com> | 2008-07-17 01:59:08 +0100 |
commit | 40dbebba28bfa1c55737da7354542c3bdca4e1a1 (patch) | |
tree | f21c9a31379dae25b5cedae5ea00053a272d9408 /activesupport/lib/active_support/core_ext/hash | |
parent | cd6301557005617583e3f9ca5fb56297adcce7cc (diff) | |
download | rails-40dbebba28bfa1c55737da7354542c3bdca4e1a1.tar.gz rails-40dbebba28bfa1c55737da7354542c3bdca4e1a1.tar.bz2 rails-40dbebba28bfa1c55737da7354542c3bdca4e1a1.zip |
Allow deep merging of hash values for nested with_options. [#490 state:resolved]
Signed-off-by: Pratik Naik <pratiknaik@gmail.com>
Diffstat (limited to 'activesupport/lib/active_support/core_ext/hash')
-rw-r--r-- | activesupport/lib/active_support/core_ext/hash/deep_merge.rb | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/hash/deep_merge.rb b/activesupport/lib/active_support/core_ext/hash/deep_merge.rb new file mode 100644 index 0000000000..f8842ba57a --- /dev/null +++ b/activesupport/lib/active_support/core_ext/hash/deep_merge.rb @@ -0,0 +1,23 @@ +module ActiveSupport #:nodoc: + module CoreExtensions #:nodoc: + module Hash #:nodoc: + # Allows for deep merging + module DeepMerge + # Returns a new hash with +self+ and +other_hash+ merged recursively. + def deep_merge(other_hash) + self.merge(other_hash) do |key, oldval, newval| + oldval = oldval.to_hash if oldval.respond_to?(:to_hash) + newval = newval.to_hash if newval.respond_to?(:to_hash) + oldval.class.to_s == 'Hash' && newval.class.to_s == 'Hash' ? oldval.deep_merge(newval) : newval + end + end + + # Returns a new hash with +self+ and +other_hash+ merged recursively. + # Modifies the receiver in place. + def deep_merge!(other_hash) + replace(deep_merge(other_hash)) + end + end + end + end +end |