removed requested_at

partly using submission_id
some cleanup

app/assets/javascripts/editor.js.erb

@@ -1215,7 +1215,6 @@ $(function() {
     var question = $('#question').val();
 
     var createRequestForComments = function(submission) {
-      console.log(submission);
       $.ajax({
         method: 'POST',
         url: '/request_for_comments',

app/models/request_for_comment.rb

@@ -17,6 +17,8 @@ class RequestForComment < ActiveRecord::Base
     Submission.find(file.context_id)
   end
 
+  # not used right now, finds the last submission for the respective user and exercise.
+  # might be helpful to check whether the exercise has been solved in the meantime.
   def last_submission
     Submission.find_by_sql(" select * from submissions
             where exercise_id = #{exercise_id} AND
@@ -25,33 +27,15 @@ class RequestForComment < ActiveRecord::Base
             limit 1").first
   end
 
+  # not used any longer, since we directly saved the submission_id now.
+  # Was used before that to determine the submission belonging to the request_for_comment.
   def last_submission_before_creation
-    submission1 = Submission.find_by_sql(" select * from submissions
+    Submission.find_by_sql(" select * from submissions
             where exercise_id = #{exercise_id} AND
             user_id =  #{user_id} AND
             '#{created_at.localtime}' > created_at
             order by created_at desc
             limit 1").first
-    submission2 = Submission.find_by_sql(" select * from submissions
-            where exercise_id = #{exercise_id} AND
-            user_id =  #{user_id} AND
-            '#{created_at}' > created_at
-            order by created_at desc
-            limit 1").first
-    submission3 = Submission.find_by_sql(" select * from submissions
-            where exercise_id = #{exercise_id} AND
-            user_id =  #{user_id} AND
-            '#{created_at.strftime('%Y-%m-%d %H:%M:%S.%N')}' > created_at
-            order by created_at desc
-            limit 1").first
-    submission4 = Submission.find_by_sql(" select * from submissions
-            where exercise_id = #{exercise_id} AND
-            user_id =  #{user_id} AND
-            '#{created_at.localtime.strftime('%Y-%m-%d %H:%M:%S.%N')}' > created_at
-            order by created_at desc
-            limit 1").first
-    binding.pry
-    submission1
   end
 
   def comments_count
@@ -64,6 +48,6 @@ class RequestForComment < ActiveRecord::Base
 
     private
     def self.row_number_user_sql
-      select("id, user_id, exercise_id, file_id, question, requested_at, created_at, updated_at, user_type, solved, row_number() OVER (PARTITION BY user_id ORDER BY created_at DESC) as row_number").to_sql
+      select("id, user_id, exercise_id, file_id, question, created_at, updated_at, user_type, solved, submission_id, row_number() OVER (PARTITION BY user_id ORDER BY created_at DESC) as row_number").to_sql
     end
 end

app/views/request_for_comments/index.html.slim

@@ -27,6 +27,6 @@ h1 = RequestForComment.model_name.human(count: 2)
             td = '-'
           td = request_for_comment.comments_count
           td = request_for_comment.user.displayname
-          td = t('shared.time.before', time: distance_of_time_in_words_to_now(request_for_comment.requested_at))
+          td = t('shared.time.before', time: distance_of_time_in_words_to_now(request_for_comment.created_at))
 
 = render('shared/pagination', collection: @request_for_comments)

app/views/request_for_comments/show.html.erb

@@ -1,11 +1,11 @@
 <div class="list-group">
-  <h4 id ="exercise_caption" class="list-group-item-heading" data-rfc-id = "<%= @request_for_comment.id %>" ><%= Exercise.find(@request_for_comment.exercise_id) %></h4>
+  <h4 id ="exercise_caption" class="list-group-item-heading" data-rfc-id = "<%= @request_for_comment.id %>" ><%= link_to(@request_for_comment.exercise.title, [:implement, @request_for_comment.exercise]) %></h4>
   <p class="list-group-item-text">
       <%
         user = @request_for_comment.user
         submission =  @request_for_comment.last_submission_before_creation
       %>
-    <%= user.displayname %> | <%= @request_for_comment.requested_at.localtime %>
+    <%= user.displayname %> | <%= @request_for_comment.created_at.localtime %>
   </p>
   <h5>
     <u><%= t('activerecord.attributes.exercise.description') %>:</u> "<%= render_markdown(@request_for_comment.exercise.description) %>"

db/schema.rb

@@ -176,7 +176,6 @@ ActiveRecord::Schema.define(version: 20160704143402) do
     t.integer  "user_id",       null: false
     t.integer  "exercise_id",   null: false
     t.integer  "file_id",       null: false
-    t.datetime "requested_at"
     t.datetime "created_at"
     t.datetime "updated_at"
     t.string   "user_type"