Rails mapping array of hashes onto single hash
You could compose Enumerable#reduce and Hash#merge to accomplish what you want.
input = [{"testPARAM1"=>"testVAL1"}, {"testPARAM2"=>"testVAL2"}]input.reduce({}, :merge) is {"testPARAM2"=>"testVAL2", "testPARAM1"=>"testVAL1"}Reducing an array sort of like sticking a method call between each element of it.
For example [1, 2, 3].reduce(0, :+) is like saying 0 + 1 + 2 + 3 and gives 6.
In our case we do something similar, but with the merge function, which merges two hashes.
[{:a => 1}, {:b => 2}, {:c => 3}].reduce({}, :merge) is {}.merge({:a => 1}.merge({:b => 2}.merge({:c => 3}))) is {:a => 1, :b => 2, :c => 3}
How about:
h = [{"testPARAM1"=>"testVAL1"}, {"testPARAM2"=>"testVAL2"}]r = h.inject(:merge)
Use #inject
hashes = [{"testPARAM1"=>"testVAL1"}, {"testPARAM2"=>"testVAL2"}]merged = hashes.inject({}) { |aggregate, hash| aggregate.merge hash }merged # => {"testPARAM1"=>"testVAL1", "testPARAM2"=>"testVAL2"}