diff --git a/lib/airtable/httparty_patched_hash_conversions.rb b/lib/airtable/httparty_patched_hash_conversions.rb
new file mode 100644
index 0000000..9d779df
--- /dev/null
+++ b/lib/airtable/httparty_patched_hash_conversions.rb
@@ -0,0 +1,49 @@
+module HTTParty
+  module PatchedHashConversions
+    # @return <String> This hash as a query string
+    #
+    # @example
+    #   { name: "Bob",
+    #     address: {
+    #       street: '111 Ruby Ave.',
+    #       city: 'Ruby Central',
+    #       phones: ['111-111-1111', '222-222-2222']
+    #     }
+    #   }.to_params
+    #     #=> "name=Bob&address[city]=Ruby Central&address[phones][0]=111-111-1111&address[phones][1]=222-222-2222&address[street]=111 Ruby Ave."
+    def self.to_params(hash)
+      hash.to_hash.map { |k, v| normalize_param(k, v) }.join.chop
+    end
+
+    # @param key<Object> The key for the param.
+    # @param value<Object> The value for the param.
+    #
+    # @return <String> This key value pair as a param
+    #
+    # @example normalize_param(:name, "Bob Jones") #=> "name=Bob%20Jones&"
+    def self.normalize_param(key, value)
+      param = ''
+      stack = []
+
+      if value.respond_to?(:to_ary)
+        param << value.to_ary.each_with_index.map { |element, index| normalize_param("#{key}[#{index}]", element) }.join
+      elsif value.respond_to?(:to_hash)
+        stack << [key, value.to_hash]
+      else
+        param << "#{key}=#{ERB::Util.url_encode(value.to_s)}&"
+      end
+
+      stack.each do |parent, hash|
+        hash.each do |k, v|
+          if v.respond_to?(:to_hash)
+            stack << ["#{parent}[#{k}]", v.to_hash]
+          else
+            param << normalize_param("#{parent}[#{k}]", v)
+          end
+        end
+      end
+
+      param
+    end
+  end
+end
diff --git a/lib/airtable/resource.rb b/lib/airtable/resource.rb
index 26ae69a..20e0e6f 100644
--- a/lib/airtable/resource.rb
+++ b/lib/airtable/resource.rb
@@ -1,12 +1,18 @@
+require 'airtable/httparty_patched_hash_conversions'
+
 module Airtable
   # Base class for authorized resources sending network requests
   class Resource
     include HTTParty
-    base_uri 'https://api.airtable.com/v0/'
+    base_uri (ENV['AIRTABLE_ENDPOINT_URL'] || 'https://api.airtable.com/') + 'v0/'
     # debug_output $stdout
 
     attr_reader :api_key, :app_token, :worksheet_name
 
+    query_string_normalizer(proc do |query|
+      HTTParty::PatchedHashConversions.to_params(query)
+    end)
+
     def initialize(api_key, app_token, worksheet_name)
       @api_key = api_key
       @app_token = app_token
diff --git a/lib/airtable/table.rb b/lib/airtable/table.rb
index 2205db8..0ea9712 100644
--- a/lib/airtable/table.rb
+++ b/lib/airtable/table.rb
@@ -20,10 +20,25 @@ def all(options={})
 
     # Fetch records from the sheet given the list options
     # Options: limit = 100, offset = "as345g", sort = ["Name", "asc"]
+    # sort could be an array
     # records(:sort => ["Name", :desc], :limit => 50, :offset => "as345g")
     def records(options={})
-      options["sortField"], options["sortDirection"] = options.delete(:sort) if options[:sort]
-      results = self.class.get(worksheet_url, query: options).parsed_response
+      update_sort_options!(options)
+      raw_response = self.class.get(worksheet_url, query: options)
+      case raw_response.code
+          when 200
+            # ok
+          when 422
+            results = raw_response.parsed_response
+            check_and_raise_error(results)
+            raise Error.new('Invalid request')
+          when 503
+            raise Error.new('Service not available')
+          when 500...600
+            puts "Server error #{response.code}"
+            raise Error.new('Server error please contact support@airtable.com')
+      end
+      results = raw_response.parsed_response
       check_and_raise_error(results)
       RecordSet.new(results)
     end
@@ -34,7 +49,7 @@ def records(options={})
     #
     # select(limit: 10, sort: ["Name", "asc"], formula: "Order < 2")
     def select(options={})
-      options['sortField'], options['sortDirection'] = options.delete(:sort) if options[:sort]
+      update_sort_options!(options)
       options['maxRecords'] = options.delete(:limit) if options[:limit]
 
       if options[:formula]
@@ -47,6 +62,32 @@ def select(options={})
       RecordSet.new(results)
     end
 
+    def update_sort_options!(options)
+      sortOption = options.delete(:sort) || options.delete('sort')
+      if sortOption && sortOption.is_a?(Array)
+        if sortOption.length > 0
+          if sortOption[0].is_a? String
+            singleSortField, singleSortDirection = sortOption
+            options["sort"] = [{field: singleSortField, direction: singleSortDirection}]
+          elsif sortOption[0].is_a?(Hash)
+            options["sort"] = sortOption.to_a
+          elsif sortOption.is_a?(Array) && sortOption[0].is_a?(Array)
+            options["sort"] = sortOption.map {|(sortField, sortDirection)| {field: sortField, direction: sortDirection} }
+          else
+            raise ArgumentError.new("Unknown sort options format.")
+          end
+        end
+      elsif sortOption
+        options["sort"] = sortOption
+      end
+
+      if options["sort"]
+        # standardize the sort spec
+        options["sort"] = options["sort"].map {|sortSpec| {field: sortSpec[:field].to_s, direction: sortSpec[:direction].to_s.downcase} }
+        raise ArgumentError.new("Unknown sort direction")  unless options["sort"].all? {|sortObj| ['asc', 'desc'].include? sortObj[:direction]}
+      end
+    end
+
     def raise_bad_formula_error
       raise ArgumentError.new("The value for filter should be a String.")
     end
diff --git a/test/airtable_test.rb b/test/airtable_test.rb
index be443e7..8c4f704 100644
--- a/test/airtable_test.rb
+++ b/test/airtable_test.rb
@@ -32,6 +32,13 @@
       assert_equal @select_records.records, []
     end
 
+    it "should sort by multiple pairs" do
+      stub_airtable_response!("https://api.airtable.com/v0/#{@app_key}/#{@sheet_name}?sort[0][field]=foo&sort[0][direction]=asc&sort[1][field]=bar&sort[1][direction]=desc", { "records" => [], "offset" => "abcde" })
+      @table = Airtable::Client.new(@client_key).table(@app_key, @sheet_name)
+      @select_records = @table.select(sort: [['foo', 'asc'], ['bar', 'desc']])
+      assert_equal @select_records.records, []
+    end
+
     it "should raise an ArgumentError if a formula is not a string" do
       stub_airtable_response!("https://api.airtable.com/v0/#{@app_key}/#{@sheet_name}", { "records" => [], "offset" => "abcde" })
       @table = Airtable::Client.new(@client_key).table(@app_key, @sheet_name)
diff --git a/test/test_helper.rb b/test/test_helper.rb
index c0e9338..c5f0371 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -4,11 +4,10 @@
 require 'minitest/autorun'
 
 def stub_airtable_response!(url, response, method=:get, status=200)
-
   stub_request(method, url)
     .to_return(
       body: response.to_json,
       status: status,
-      headers: { 'Content-Type' =>  "application/json"}
+      headers: { 'Content-Type' => 'application/json' }
     )
 end