hashie 3.3.0 breaks parameters

[erkattak]

I'm using grape from the master branch (currently 0.8.1)

hashie was updated to 3.3.0 along with my update to rails 4.1.5

This has caused issues with parameter validations, since the validators access the parameters with whatever symbol/string was used to define that attribute (seemingly).

So, when I have parameters such as

{ 
  'property_id' => 1
  # ...
}

When the validations are being run, the PresenceValidator access this attribute like so:

unless params.respond_to?(:key?) && params.key?(attr_name)

This causes any "requires" validations to fail all the time.

I think this belongs in hashie, but wanted to make a note here for anyone else that might have this issue

vagrant ☆ :/vagrant$ irb
irb(main):001:0> gem 'hashie', '3.3.0'
=> true
irb(main):002:0> require 'hashie'
=> true
irb(main):003:0> m = Hashie::Mash.new 'property_id' => 1
=> #<Hashie::Mash property_id=1>
irb(main):004:0> m['property_id']
=> 1
irb(main):005:0> m[:property_id]
=> nil
irb(main):006:0> m.property_id
=> 1
irb(main):007:0> exit
vagrant ☆ :/vagrant$ irb
irb(main):001:0> gem 'hashie', '3.2.0'
=> true
irb(main):002:0> require 'hashie'
=> true
irb(main):003:0> m = Hashie::Mash.new 'property_id' => 1
=> #<Hashie::Mash property_id=1>
irb(main):004:0> m['property_id']
=> 1
irb(main):005:0> m[:property_id]
=> 1
irb(main):006:0> m.property_id
=> 1

[dblock]

There's a fix PRed in Grape in #737.

[dblock]

I've yanked Hashie 3.3.0, reverted hashie/hashie#197 which is the root cause of this, in hashie/hashie#217, and cut 3.3.1. Things should be back to normal now.