Add export as csv for part specific points

Author: Irene

app/controllers/points_controller.rb

@@ -81,6 +81,9 @@ def show
     end
     respond_to do |format|
       format.html
+      format.csv do
+        render_csv(filename: "#{@course.name}_#{@sheetname}_points.csv")
+      end
       format.json do
         output = {
           api_version: ApiVersion::API_VERSION,

app/views/points/show.csv.erb

@@ -0,0 +1,29 @@
+<% require 'portable_csv' %>
+<%= PortableCSV.generate(:force_quotes => true) do |csv|
+  arr = ["Username"]
+  arr += @user_fields.map(&:label) if @user_fields
+  arr += @exercises.map{ |exercise| [exercise[:name]] + (exercise.available_points.length > 1 ? [nil] * (exercise.available_points.length-1) : []) }.flatten
+  csv << arr
+
+  arr = [nil]
+  arr += [nil] * @user_fields.length if @user_fields
+  arr += @exercises.map{|exercise| exercise.available_points.sort.map{|point| point.name }}.flatten
+  csv << arr
+
+  @users.each do |user, index|
+    user_points = @users_to_points[user.login]
+    arr = [user.login]
+    if @user_fields
+      @user_fields.each do |field|
+        value = user.user_field_values.find { |o| o.field_name == field.name }
+        arr += [value.value] if value
+      end
+    end
+    @exercises.each do |exercise|
+      exercise.available_points.sort.each do |p|
+        arr += user_points.include?(p.name) ? [1] : [nil]
+      end
+    end
+    csv << arr
+  end
+end.html_safe %>

app/views/points/show.html.erb

@@ -6,11 +6,14 @@
 
     <div class="alternative-options-links">
       <% if params[:sort_by].blank? %>
-        <%= link_to('Sort by points', organization_course_point_path(@organization, @course, @sheetname, sort_by: 'points', show_attempted: params[:show_attempted]),  class: "btn btn-primary")%>
+        <%= link_to 'Sort by points', organization_course_point_path(@organization, @course, @sheetname, :sort_by => 'points'),class: "btn btn-primary" %>
       <% else %>
         <%= link_to('Sort by username', organization_course_point_path(@organization, @course, @sheetname, show_attempted: params[:show_attempted]), class: "btn btn-primary") %>
       <% end %>
-
+      <% if can?(:teach, @course) %>
+        <%= link_to('Export as CSV', organization_course_point_path(@organization, @course, @sheetname, :sort_by => params[:sort_by], :format => 'csv'), class: "btn btn-primary") %>
+      <% end %>
+    </div>
       <% if can? :refresh_gdocs_spreadsheet, @course %>
         <% link_to 'Refresh Google Docs worksheet', refresh_gdocs_organization_course_point_path(@organization, @course, @sheetname), class: "btn btn-primary" %>
       <% end %>