* allow to define a labor budget for users without a rate

* fixed display bug if user has no rate for a fixed anymore
* allowe to remove all rates for a user

git-svn-id: https://dev.finn.de/svn/cockpit/trunk@111 7926756e-e54e-46e6-9721-ed318f58905e

app/controllers/hourly_rates_controller.rb

@@ -35,13 +35,19 @@ class HourlyRatesController < ApplicationController
       
       existing_attributes = params[:user][:existing_rate_attributes]
       unless existing_attributes.nil?
+        # this selects all rate_ids for the current user and the current project
         rate_ids = HourlyRate.count(:conditions => {:user_id => @user, :project_id => @project},
                          :group => :id,
                          :select => [:id]).to_hash
         
         existing_attributes = existing_attributes.reject{|a| rate_ids.has_key? a.id}
       end
+    else
+      new_attributes = nil
+      existing_attributes = {}
+    end
     
+    if request.post?
       @user.new_rate_attributes = new_attributes if new_attributes
       @user.existing_rate_attributes = existing_attributes
     end

app/models/deliverable_cost.rb

@@ -9,6 +9,10 @@ class DeliverableCost < ActiveRecord::Base
   end
   
   def calculated_costs
-    units && cost_type ? cost_type.rate_at(deliverable.fixed_date).rate * units : 0.0
+    if units && cost_type && rate = cost_type.rate_at(deliverable.fixed_date)
+      rate.rate * units
+    else
+      0.0
+    end
   end
 end

app/models/deliverable_hour.rb

@@ -11,7 +11,11 @@ class DeliverableHour < ActiveRecord::Base
   end
   
   def calculated_costs
-    hours && user ? user.rate_at(deliverable.fixed_date, deliverable.project_id).rate * hours : 0.0
+    if user && hours && rate = user.rate_at(deliverable.fixed_date, deliverable.project_id)
+      rate.rate * hours
+    else 
+      0.0
+    end
   end
   
   def can_view_costs?(usr, project)

app/views/deliverables/_deliverable_hour.rhtml

@@ -18,7 +18,7 @@
     <%= cost_form.text_field :hours, :index => id_or_index, :size => 3 %>
   </td>
   <td class="user">
-    <%= cost_form.select :user_id, @project.assignable_users.sort.select{|u| u.rate_at(@deliverable.fixed_date, @project)}.collect{|u| [u.name, u.id]}, {:prompt => true}, {:index => id_or_index} %>
+    <%= cost_form.select :user_id, @project.assignable_users.sort.collect{|u| [u.name, u.id]}, {:prompt => true}, {:index => id_or_index} %>
   </td>
   <td class="comment">
     <%= cost_form.text_field :comments, :index => id_or_index, :size => 40 %>