Refactoring methods name

app/helpers/metric_helper.rb

@@ -26,6 +26,7 @@ def get_metrics(grade)
 
   def calculate_metrics(release)
     sprint = release.sprints.last
+
     if sprint.blank? || sprint.stories.blank?
       return nil
     else
@@ -53,19 +54,19 @@ def calculate_metrics(release)
         set_ideal_line(days_of_sprint, ideal_line, total_points)
         ideal_burned_points = ideal_line[0] - ideal_line[1]
 
-        for i in 0..(date_axis.length - 2)
-          real_burned_points = points_axis[i] - points_axis[i + 1]
+        for date in 0..(date_axis.length - 2)
+          real_burned_points = points_axis[date] - points_axis[date + 1]
           burned_percentage = Float((real_burned_points).abs * 100) / ideal_burned_points
           metric_burndown_array.push(burned_percentage)
         end
 
-        for i in 0..(amount_of_sprints - 1)
-          metric_velocity_value += (total_sprints_points[i] - velocities[i])
+        for sprint_amount in 0..(amount_of_sprints - 1)
+          metric_velocity_value += (total_sprints_points[sprint_amount] - velocities[sprint_amount])
         end
 
-        for i in 0..(release.sprints.length - 1)
-          planned_points += velocity[:total_points][i]
-          burned_points += velocity[:completed_points][i]
+        for release_amount in 0..(release.sprints.length - 1)
+          planned_points += velocity[:total_points][release_amount]
+          burned_points += velocity[:completed_points][release_amount]
         end
 
         metric_burndown_value = calculate_burndown(metric_burndown_array)
@@ -102,19 +103,19 @@ def calculate_velocity_and_debt(metric)
     return values
   end
 
-  def calculate_burndown(metric)
+  def calculate_burndown(metrics)
     values = 0
 
-    for i in 0..(metric.length - 1)
-      if metric[i] <= 10 || metric[i] >= 200
+    for metric in 0..(metrics.length - 1)
+      if metrics[metric] <= 10 || metrics[metric] >= 200
         values += 0
-      elsif metric[i] <= 40
+      elsif metrics[metric] <= 40
         values += 1
-      elsif metric[i] <= 60
+      elsif metrics[metric] <= 60
         values += 2
-      elsif metric[i] <= 80
+      elsif metrics[metric] <= 80
         values += 3
-      elsif metric[i] <= 100
+      elsif metrics[metric] <= 100
         values += 4
       end
     end