版本库：用户最近六个月提交次数

app/controllers/repositories_controller.rb

@@ -670,7 +670,51 @@ update
     graph.burn
   end
 
+  # 用户最近六个月的提交次数
+  def author_commits_six_month(repository)
+    @date_to = Date.today
+    @date_from = @date_to << 6
+    @date_from = Date.civil(@date_from.year, @date_from.month, 1)
+    commits_by_author = Changeset.count(:all, :group => :committer,
+                                        :conditions => ["#{Changeset.table_name}.repository_id = ? AND #{Changeset.table_name}.commit_date BETWEEN ? AND ?", repository.id, @date_from, @date_to])
+    commits_by_author = commits_by_author.to_a.sort! {|x, y| x.last <=> y.last}.last(40)
 
+    changes_by_author = Change.count(:all, :group => :committer, :include => :changeset,
+                                     :conditions => ["#{Changeset.table_name}.repository_id = ? AND #{Changeset.table_name}.commit_date BETWEEN ? AND ?", repository.id, @date_from, @date_to])
+    h = changes_by_author.inject({}) {|o, i| o[i.first] = i.last; o}
+
+    fields = commits_by_author.collect {|r| r.first}
+    commits_data = commits_by_author.collect {|r| r.last}
+    changes_data = commits_by_author.collect {|r| h[r.first] || 0}
+
+    fields = fields + [""]*(10 - fields.length) if fields.length<10
+    commits_data = commits_data + [0]*(10 - commits_data.length) if commits_data.length<10
+    changes_data = changes_data + [0]*(10 - changes_data.length) if changes_data.length<10
+
+    # Remove email adress in usernames
+    fields = fields.collect {|c| c.gsub(%r{<.+@.+>}, '') }
+
+    graph = SVG::Graph::BarHorizontal.new(
+        :height => 400,
+        :width => 600,
+        :fields => fields,
+        :stack => :side,
+        :scale_integers => true,
+        :show_data_values => true,
+        :rotate_y_labels => false,
+        :graph_title => l(:label_author_commits_six_month),
+        :show_graph_title => true
+    )
+    graph.add_data(
+        :data => commits_data,
+        :title => l(:label_revision_plural)
+    )
+    # graph.add_data(
+    #     :data => changes_data,
+    #     :title => l(:label_change_plural)
+    # )
+    graph.burn
+  end
 
 
   def check_hidden_repo