Merge pull request #162 from kytrinyx/projects-stats

Extract duplicate top projects query from stats controller

app/models/stats/top_projects_query.rb

@@ -0,0 +1,39 @@
+# Get the first 10 projects with their actions count of actions.
+# When a cutoff is passed in, only actions that have been created
+# or completed since that cutoff will be included.
+module Stats
+  class TopProjectsQuery
+
+    attr_reader :user, :cutoff
+    def initialize(user, cutoff = nil)
+      @user = user
+      @cutoff = cutoff
+    end
+
+    def result
+      user.projects.find_by_sql(query_options)
+    end
+
+    private
+
+    def query_options
+      options = [sql, user.id]
+      options += [cutoff, cutoff] if cutoff
+      options
+    end
+
+    def sql
+      query = "SELECT p.id, p.name, count(p.id) AS count "
+      query << "FROM todos t, projects p "
+      query << "WHERE t.project_id = p.id "
+      query << "AND t.user_id= ? "
+      if cutoff
+        query << "AND (t.created_at > ? OR t.completed_at > ?) "
+      end
+      query << "GROUP BY p.id, p.name "
+      query << "ORDER BY count DESC "
+      query << "LIMIT 10"
+    end
+
+  end
+end