No support for BETWEEN queries on range keys

[m5rk]

DynamoDB supports BETWEEN queries for range keys as noted here:

http://docs.aws.amazon.com/AWSRubySDK/latest/AWS/DynamoDB/Client/V20120810.html#query-instance_method

Does this mean that support for this in dynamoid won't be available until the adapter is updated to work with the newer DynamoDB client and/or the V2 APIs?

[m5rk]

We were able to get a range query to work for a datetime field by using a fake operator:

started_at = 2.days.ago
ended_at = 1.day.ago

some_date_range = started_at.to_f..ended_at.to_f

SomeModel.where(hash_key: key).where('started_at.between' => some_date_range)

The problem happens here:

Dynamoid/lib/dynamoid/indexes/index.rb

Line 72 in 752327c

hash[:range_value] = range_keys.inject(0.0) {|sum, key| sum + attrs[key].to_f} if self.range_key?

[m5rk]

This may be a duplicate of #148