support mutliple series organized as a hash of series

lib/chartnado/renderer.rb

@@ -11,7 +11,7 @@ def initialize(context, data_block, &render_block)
 
   delegate :controller, to: :context
 
-  def render(*args, **options)
+  def render(*args, ** options)
     json_options = {}
     chartkick_options = options.dup
 
@@ -40,7 +40,7 @@ def render(*args, **options)
     }
 
     if options[:wrapper_proc]
-      context.instance_exec(*args, renderer, **options, &options[:wrapper_proc])
+      context.instance_exec(*args, renderer, ** options, &options[:wrapper_proc])
     else
       renderer.call
     end
@@ -49,32 +49,33 @@ def render(*args, **options)
   def chart_json(series, show_total: false, reverse_sort: false, percentage: false)
     series = Chartnado::Series::Wrap[series]
     series *= 100.0 if percentage
-    if series.hash?
-      if (key = series.keys.first) and key.is_a?(Array) and key.size == 2
+    if series.has_separate_named_series?
+      series = series.to_a
+      if series.first.second.respond_to?(:map)
         totals = Hash.new(0.0)
-        new_series = series.group_by{|k, v| k[0] }.sort_by { |k| k.to_s }
+        new_series = series.sort_by { |item| item.first.to_s }
         new_series = new_series.reverse if reverse_sort
 
         new_series = new_series.map do |name, data|
           {
             name: name,
             data: data.map do |k, v|
-              totals[k[1]] += v if show_total
-              [k[1], v]
+              totals[k] += v if show_total
+              [k, v]
             end
           }
         end
 
         if show_total
           [{name: 'Total',
-            data: totals.map {|k,v| [k, 0] },
-            tooltip: totals.map {|k,v| [k, v] }
+            data: totals.map { |k, v| [k, 0] },
+            tooltip: totals.map { |k, v| [k, v] }
            }] + new_series
         else
           new_series
         end
       else
-        new_series = series.sort_by { |key| key.to_s }
+        new_series = series.sort_by { |item| item.first.to_s }
         new_series = new_series.reverse if reverse_sort
 
         if show_total
@@ -83,32 +84,32 @@ def chart_json(series, show_total: false, reverse_sort: false, percentage: false
           new_series
         end
       end
-    elsif series.array? && series.first.is_a?(Array)
-      if series.first.second.respond_to?(:map)
+    elsif series.hash?
+      if (key = series.keys.first) and key.is_a?(Array) and key.size == 2
         totals = Hash.new(0.0)
-        new_series = series.sort_by { |item| item.first.to_s }
+        new_series = series.group_by { |k, v| k[0] }.sort_by { |k| k.to_s }
         new_series = new_series.reverse if reverse_sort
 
         new_series = new_series.map do |name, data|
           {
             name: name,
             data: data.map do |k, v|
-              totals[k] += v if show_total
-              [k, v]
+              totals[k[1]] += v if show_total
+              [k[1], v]
             end
           }
         end
 
         if show_total
           [{name: 'Total',
-            data: totals.map {|k,v| [k, 0] },
-            tooltip: totals.map {|k,v| [k, v] }
+            data: totals.map { |k, v| [k, 0] },
+            tooltip: totals.map { |k, v| [k, v] }
            }] + new_series
         else
           new_series
         end
       else
-        new_series = series.sort_by { |item| item.first.to_s }
+        new_series = series.sort_by { |key| key.to_s }
         new_series = new_series.reverse if reverse_sort
 
         if show_total
@@ -117,12 +118,10 @@ def chart_json(series, show_total: false, reverse_sort: false, percentage: false
           new_series
         end
       end
+    elsif series.respond_to?(:map)
+      series
     else
-      if series.respond_to?(:map)
-        series
-      else
-        [['Total', series]]
-      end
+      [['Total', series]]
     end
   end
 end

spec/renderer_spec.rb

@@ -46,6 +46,18 @@ def chart_json(*series, **options)
                  {name: :b, data: [[1, 20]]}]
       end
     end
+    describe "for multiple series organized as a hash" do
+      it "can generate chartkick compatible series" do
+        expect(chart_json({:a => {1 => 10}, :b => {1 => 20}})).
+          to eq [{name: :a, data: [[1, 10]]}, {name: :b, data: [[1,20]]}]
+      end
+      it "can add totals" do
+        expect(chart_json({:a => {1 => 10}, :b => {1 => 20}}, show_total: true)).
+          to eq [{name: 'Total', data: [[1, 0]], tooltip: [[1, 30.0]]},
+                 {name: :a, data: [[1, 10]]},
+                 {name: :b, data: [[1, 20]]}]
+      end
+    end
     describe "for data that is just a scalar" do
       it "shows the scalar as the total" do
         expect(chart_json(10)).