Removed all the duplicate methods that were getting the rate for each TimeEntry

and replaced them with a simple collector that uses the new TimeEntry#cost
method (that wraps the Rate API).

  #1924

app/models/budget.rb

@@ -110,15 +110,8 @@ class Budget
   # Dollar amount of time that has been logged to the project itself
   def amount_missing_on_issues
     time_logs = TimeEntry.find_all_by_project_id_and_issue_id(self.project, nil)
-    total = 0
-    
-    # Find each Member for their rate
-    time_logs.each do |time_log|
-      rate = Rate.amount_for(time_log.user, time_log.project, time_log.spent_on.to_s)
-      total += (rate * time_log.hours) unless rate.nil?
-    end
-    
-    return total
+
+    return time_logs.collect(&:cost).inject { |sum, n| sum + n}
   end
   
   # Dollar amount of time that has been logged to issues that are not assigned to deliverables
@@ -132,14 +125,8 @@ class Budget
     return 0 if all_issues.empty?
     missing_issues = all_issues - deliverable_issues
 
-    
     time_logs = missing_issues.collect(&:time_entries).flatten
     
-    time_logs.each do |time_log|
-      rate = Rate.amount_for(time_log.user, time_log.project, time_log.spent_on.to_s)
-      total += (rate * time_log.hours) unless rate.nil?
-    end
-    
-    return total
+    return time_logs.collect(&:cost).inject { |sum, n| sum + n}
   end
 end

app/models/fixed_deliverable.rb

@@ -16,14 +16,8 @@ class FixedDeliverable < Deliverable
     
     # Get all timelogs assigned
     time_logs = self.issues.collect(&:time_entries).flatten
-
-    # Find each Member for their rate
-    time_logs.each do |time_log|
-      rate = Rate.amount_for(time_log.user, time_log.project, time_log.spent_on.to_s)
-      total += (rate * time_log.hours) unless rate.nil?
-    end
     
-    return total
+    return total + time_logs.collect(&:cost).inject { |sum, n| sum + n} 
     
   end
   

app/models/hourly_deliverable.rb

@@ -10,13 +10,7 @@ class HourlyDeliverable < Deliverable
     # Get all timelogs assigned
     time_logs = self.issues.collect(&:time_entries).flatten
 
-    # Find each Member for their rate
-    time_logs.each do |time_log|
-      rate = Rate.amount_for(time_log.user, time_log.project, time_log.spent_on.to_s)
-      total += (rate * time_log.hours) unless rate.nil?
-    end
-    
-    return total
+    return time_logs.collect(&:cost).inject { |sum, n| sum + n} 
   end
   
   def profit # :nodoc:

app/models/member_spent.rb

@@ -25,15 +25,9 @@ class MemberSpent
     project.members.each do |member|
       member_time_entries = time_entries.select { |tl| tl.user_id == member.user.id}
       
-      spent = 0.0
-      hours = 0.0
+      spent = member_time_entries.collect(&:cost).inject { |sum, n| sum + n}
+      hours = member_time_entries.collect(&:hours).inject { |sum, n| sum + n}
 
-      member_time_entries.each do |time_entry|
-        rate = Rate.amount_for(time_entry.user, time_entry.project, time_entry.spent_on.to_s)
-        spent += time_entry.hours.to_f * rate unless rate.nil?
-        hours += time_entry.hours
-      end
-      
       membership << MemberSpent.new({ 
                                       :user => member.user,
                                       :hours => hours,