Merge remote-tracking branch 'origin/master' into ace-editor-exercise-edit

app/assets/javascripts/application.js

@@ -21,3 +21,7 @@
 //= require turbolinks
 //= require_tree ../../../lib
 //= require_tree .
+//= require bootstrap_pagedown
+//= require markdown.converter
+//= require markdown.sanitizer
+//= require markdown.editor

app/assets/javascripts/editor.js.erb

@@ -19,6 +19,10 @@ $(function() {
   var SERVER_SEND_EVENT = 2;
 
   var editors = [];
+  var editor_for_file = new Map();
+  var regex_for_language = new Map();
+  var tracepositions_regex;
+
   var active_file = undefined;
   var active_frame = undefined;
   var running = false;
@@ -37,6 +41,7 @@ $(function() {
   var ENTER_KEY_CODE = 13;
 
   var flowrOutputBuffer = "";
+  var QaApiOutputBuffer = {'stdout': '', 'stderr': ''};
   var flowrResultHtml = '<div class="panel panel-default"><div id="{{headingId}}" role="tab" class="panel-heading"><h4 class="panel-title"><a data-toggle="collapse" data-parent="#flowrHint" href="#{{collapseId}}" aria-expanded="true" aria-controls="{{collapseId}}"></a></h4></div><div id="{{collapseId}}" role="tabpanel" aria-labelledby="{{headingId}}" class="panel-collapse collapse"><div class="panel-body"></div></div></div>'
 
   var ajax = function(options) {
@@ -175,7 +180,10 @@ $(function() {
   var downloadCode = function(event) {
     event.preventDefault();
     createSubmission(this, null,function(response) {
-      var url = response.download_url.replace(FILENAME_URL_PLACEHOLDER, active_file.filename);
+      var url = response.download_url;
+
+      // to download just a single file, use the following url
+      //var url = response.download_file_url.replace(FILENAME_URL_PLACEHOLDER, active_file.filename);
       window.location = url;
     });
   };
@@ -184,8 +192,8 @@ $(function() {
     (streamed ? evaluateCodeWithStreamedResponse : evaluateCodeWithoutStreamedResponse)(url, callback);
   };
 
-  var evaluateCodeWithStreamedResponse = function(url, callback) {
-    initWebsocketConnection(url);
+  var evaluateCodeWithStreamedResponse = function(url, onmessageFunction) {
+    initWebsocketConnection(url, onmessageFunction);
 
     // TODO only init turtle when required
     initTurtle();
@@ -306,9 +314,10 @@ $(function() {
     }
   };
 
-  var handleScoringResponse = function(response) {
-    printScoringResults(response);
-    var score = _.reduce(response, function(sum, result) {
+  var handleScoringResponse = function(websocket_event) {
+    results = JSON.parse(websocket_event.data);
+    printScoringResults(results);
+    var score = _.reduce(results, function(sum, result) {
       return sum + result.score * result.weight;
     }, 0).toFixed(2);
     $('#score').data('score', score);
@@ -316,6 +325,14 @@ $(function() {
     showTab(2);
   };
 
+  var handleQaApiOutput = function() {
+    if (qa_api) {
+      qa_api.executeCommand('syncOutput', [[QaApiOutputBuffer]]);
+      // reset the object
+    }
+    QaApiOutputBuffer = {'stdout': '', 'stderr': ''};
+  }
+
   // activate flowr only for half of the audience
   var isFlowrEnabled = true;//parseInt($('#editor').data('user-id'))%2 == 0;
   var handleStderrOutputForFlowr = function() {
@@ -349,13 +366,14 @@ $(function() {
     flowrOutputBuffer = '';
   };
 
-  var handleTestResponse = function(response) {
+  var handleTestResponse = function(websocket_event) {
+    result = JSON.parse(websocket_event.data);
     clearOutput();
-    printOutput(response[0], false, 0);
+    printOutput(result, false, 0);
     if (qa_api) {
-      qa_api.executeCommand('syncOutput', [response]);
+      qa_api.executeCommand('syncOutput', [result]);
     }
-    showStatus(response[0]);
+    showStatus(result);
     showTab(1);
   };
 
@@ -404,12 +422,18 @@ $(function() {
       editor.setTheme(THEME);
       editor.commands.bindKey("ctrl+alt+0", null);
       editors.push(editor);
+      editor_for_file.set($(element).parent().data('filename'), editor);
       var session = editor.getSession();
       session.setMode($(element).data('mode'));
       session.setTabSize($(element).data('indent-size'));
       session.setUseSoftTabs(true);
       session.setUseWrapMode(true);
 
+      // set regex for parsing error traces based on the mode of the main file.
+      if( $(element).parent().data('role') == "main_file"){
+        tracepositions_regex = regex_for_language.get($(element).data('mode'));
+      }
+
       var file_id =  $(element).data('id');
 
       /*
@@ -457,6 +481,12 @@ $(function() {
     $('#request-for-comments').on('click', requestComments);
   };
 
+
+  var initializeRegexes = function(){
+    regex_for_language.set("ace/mode/python", /File "(.+?)", line (\d+)/g);
+    regex_for_language.set("ace/mode/java", /(.*\.java):(\d+):/g);
+  }
+
   var initializeTooltips = function() {
     $('[data-tooltip]').tooltip();
   };
@@ -527,8 +557,8 @@ $(function() {
   };
 
   var isBrowserSupported = function() {
-    // eventsource tests for server send events (used for scoring), websockets is used for run
-    return Modernizr.eventsource && Modernizr.websockets;
+    //  websockets is used for run, score and test
+    return Modernizr.websockets;
   };
 
   var populatePanel = function(panel, result, index) {
@@ -574,20 +604,23 @@ $(function() {
     //    output_mode_is_streaming = false;
     //}
     if (!colorize) {
-      if(output.stdout != ''){
+      if(output.stdout != undefined && output.stdout != ''){
         element.append(output.stdout)
       }
 
-      if(output.stderr != ''){
+      if(output.stderr != undefined && output.stderr != ''){
         element.append('There was an error: StdErr: ' + output.stderr);
       }
 
     } else if (output.stderr) {
       element.addClass('text-warning').append(output.stderr);
+      flowrOutputBuffer += output.stderr;
+      QaApiOutputBuffer.stderr += output.stderr;
     } else if (output.stdout) {
       //if (output_mode_is_streaming){
       element.addClass('text-success').append(output.stdout);
       flowrOutputBuffer += output.stdout;
+      QaApiOutputBuffer.stdout += output.stdout;
       //}else{
       //  element.addClass('text-success');
       //  element.data('content_buffer' , element.data('content_buffer') + output.stdout);
@@ -743,7 +776,7 @@ $(function() {
         showSpinner($('#run'));
         toggleButtonStates();
         var url = response.run_url.replace(FILENAME_URL_PLACEHOLDER, active_file.filename);
-        evaluateCode(url, true, printChunk);
+        evaluateCode(url, true, function(evt) { parseCanvasMessage(evt.data, true); });
       });
     }
   };
@@ -778,7 +811,7 @@ $(function() {
     createSubmission(this, null, function(response) {
       showSpinner($('#assess'));
       var url = response.score_url;
-      evaluateCode(url, false, handleScoringResponse);
+      evaluateCode(url, true, handleScoringResponse);
     });
   };
 
@@ -876,7 +909,9 @@ $(function() {
   }
 
   var showWorkspaceTab = function(event) {
-    event.preventDefault();
+    if(event){
+      event.preventDefault();
+    }
     showTab(0);
   };
 
@@ -955,7 +990,7 @@ $(function() {
       createSubmission(this, null, function(response) {
         showSpinner($('#test'));
         var url = response.test_url.replace(FILENAME_URL_PLACEHOLDER, active_file.filename);
-        evaluateCode(url, false, handleTestResponse);
+        evaluateCode(url, true, handleTestResponse);
       });
     }
   };
@@ -974,14 +1009,14 @@ $(function() {
     $('#test').toggle(isActiveFileTestable());
   };
 
-  var initWebsocketConnection = function(url) {
+  var initWebsocketConnection = function(url, onmessageFunction) {
       //TODO: get the protocol from config file dependent on environment. (dev: ws, prod: wss)
       //causes: Puma::HttpParserError: Invalid HTTP format, parsing fails.
       //TODO: make sure that this gets cached.
       websocket = new WebSocket('<%= DockerClient.config['ws_client_protocol'] %>' + window.location.hostname + ':' + window.location.port + url);
       websocket.onopen = function(evt) { resetOutputTab(); }; // todo show some kind of indicator for established connection
       websocket.onclose = function(evt) { /* expected at some point */ };
-      websocket.onmessage = function(evt) { parseCanvasMessage(evt.data, true); };
+      websocket.onmessage = onmessageFunction;
       websocket.onerror = function(evt) { showWebsocketError(); };
       websocket.flush = function() { this.send('\n'); }
   };
@@ -1035,7 +1070,9 @@ $(function() {
           break;
         case 'exit':
             killWebsocketAndContainer();
+            handleQaApiOutput();
             handleStderrOutputForFlowr();
+            augmentStacktraceInOutput();
             break;
         case 'timeout':
             // just show the timeout message here. Another exit command is sent by the rails backend when the socket to the docker container closes.
@@ -1047,6 +1084,41 @@ $(function() {
       }
   };
 
+
+  var jumpToSourceLine = function(event){
+    var file = $(event.target).data('file');
+    var line = $(event.target).data('line');
+
+    showWorkspaceTab(null);
+    // set active file ?!?!
+
+    var frame = $('div.frame[data-filename="' + file + '"]');
+    showFrame(frame);
+
+    var editor = editor_for_file.get(file);
+    editor.gotoLine(line, 0);
+
+  };
+
+  var augmentStacktraceInOutput = function() {
+    if(tracepositions_regex){
+      var element = $('#output>pre');
+      var text = element.text();
+      element.on( "click", "a", jumpToSourceLine);
+
+      var matches;
+
+      while(matches = tracepositions_regex.exec(text)){
+        var frame = $('div.frame[data-filename="' + matches[1] + '"]')
+
+        if(frame.length > 0){
+          element.html(text.replace(matches[0], "<a href='#' data-file='" +  matches[1] + "' data-line='" + matches[2] + "'>" + matches[0] + "</a>"));
+        }
+      }
+    }
+
+  };
+
   var renderWebsocketOutput = function(msg){
     var element = findOrCreateRenderElement(0);
     element.append(msg.data);
@@ -1160,25 +1232,25 @@ $(function() {
     var file_id = $('.editor').data('id')
     var question = $('#question').val();
 
-    $.ajax({
-      method: 'POST',
-      url: '/request_for_comments',
-      data: {
-        request_for_comment: {
-          exercise_id: exercise_id,
-          file_id: file_id,
-          question: question,
-          "requested_at(1i)": 2015, // these are the timestamp values that the request handler demands
-          "requested_at(2i)":3, // they could be random here, because the timestamp is updated on serverside anyway
-          "requested_at(3i)":27,
-          "requested_at(4i)":17,
-          "requested_at(5i)":06
+    var createRequestForComments = function(submission) {
+      $.ajax({
+        method: 'POST',
+        url: '/request_for_comments',
+        data: {
+          request_for_comment: {
+            exercise_id: exercise_id,
+            file_id: file_id,
+            submission_id: submission.id,
+            question: question
+          }
         }
-      }
-    }).done(function() {
-      hideSpinner();
-      $.flash.success({ text: $('#askForCommentsButton').data('message-success') })
-    }).error(ajaxError);
+      }).done(function() {
+        hideSpinner();
+        $.flash.success({ text: $('#askForCommentsButton').data('message-success') });
+      }).error(ajaxError);
+    }
+
+    createSubmission($('.requestCommentsButton'), null, createRequestForComments);
 
     $('#comment-modal').modal('hide');
     var button = $('.requestCommentsButton');
@@ -1207,6 +1279,7 @@ $(function() {
 
   if ($('#editor').isPresent()) {
       if (isBrowserSupported()) {
+          initializeRegexes();
           initializeCodePilot();
           $('.score, #development-environment').show();
           configureEditors();

app/assets/javascripts/exercises.js

@@ -151,20 +151,41 @@ $(function() {
     });
   };
 
+  var updateFileTemplates = function(fileType) {
+      var jqxhr = $.ajax({
+          url: '/file_templates/by_file_type/' + fileType + '.json',
+          dataType: 'json'
+      });
+      jqxhr.done(function(response) {
+          var noTemplateLabel = $('#noTemplateLabel').data('text');
+          var options = "<option value>" + noTemplateLabel + "</option>";
+          for (var i = 0; i < response.length; i++) {
+              options += "<option value='" + response[i].id + "'>" + response[i].name + "</option>"
+          }
+          $("#code_ocean_file_file_template_id").find('option').remove().end().append($(options));
+      });
+      jqxhr.fail(ajaxError);
+  }
+
   if ($.isController('exercises')) {
     if ($('table').isPresent()) {
       enableBatchUpdate();
     } else if ($('.edit_exercise, .new_exercise').isPresent()) {
       execution_environments = $('form').data('execution-environments');
       file_types = $('form').data('file-types');
-     // new MarkdownEditor('#exercise_instructions');
-      new MarkdownEditor('#exercise_description');
+      // new MarkdownEditor('#exercise_instructions');
+      // new MarkdownEditor('#exercise_description')
       // todo: add an ace editor for each file
+      new PagedownEditor('#exercise_description');
 
       enableInlineFileCreation();
       inferFileAttributes();
       observeFileRoleChanges();
       overrideTextareaTabBehavior();
+    } else if ($('#files.jstree').isPresent()) {
+        var fileTypeSelect = $('#code_ocean_file_file_type_id');
+        fileTypeSelect.on("change", function() {updateFileTemplates(fileTypeSelect.val())});
+        updateFileTemplates(fileTypeSelect.val());
     }
     toggleCodeHeight();
     if (window.hljs) {

app/assets/javascripts/file_templates.js.coffee

@@ -0,0 +1,3 @@
+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

app/assets/javascripts/markdown_ace_editor.js

@@ -0,0 +1,16 @@
+(function() {
+    var ACE_FILES_PATH = '/assets/ace/';
+    
+    window.MarkdownEditor = function(selector) {
+        ace.config.set('modePath', ACE_FILES_PATH);
+        var editor = ace.edit($(selector).next()[0]);
+        editor.on('change', function() {
+            $(selector).val(editor.getValue());
+        });
+        editor.setShowPrintMargin(false);
+        var session = editor.getSession();
+        session.setMode('markdown');
+        session.setUseWrapMode(true);
+        session.setValue($(selector).val());
+    };
+})();

app/assets/javascripts/markdown_editor.js

@@ -1,16 +0,0 @@
-(function() {
-  var ACE_FILES_PATH = '/assets/ace/';
-
-  window.MarkdownEditor = function(selector) {
-    ace.config.set('modePath', ACE_FILES_PATH);
-    var editor = ace.edit($(selector).next()[0]);
-    editor.on('change', function() {
-      $(selector).val(editor.getValue());
-    });
-    editor.setShowPrintMargin(false);
-    var session = editor.getSession();
-    session.setMode('markdown');
-    session.setUseWrapMode(true);
-    session.setValue($(selector).val());
-  };
-})();

app/assets/javascripts/pagedown.js

@@ -0,0 +1,10 @@
+(function() {
+    var ACE_FILES_PATH = '/assets/ace/';
+
+    window.PagedownEditor = function(selector) {
+        var converter = Markdown.getSanitizingConverter();
+        var editor    = new Markdown.Editor( converter );
+
+        editor.run();
+    };
+})();

app/assets/stylesheets/application.css

@@ -14,4 +14,6 @@
  *= require_tree ../../../lib
  *= require_tree ../../../vendor/assets/stylesheets/
  *= require_self
- */
+ *= require bootstrap_pagedown
+ *= require markdown
+*/

app/assets/stylesheets/file_templates.css.scss

@@ -0,0 +1,3 @@
+// Place all the styles related to the FileTemplates controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

app/controllers/code_ocean/files_controller.rb

@@ -10,6 +10,11 @@ module CodeOcean
 
     def create
       @file = CodeOcean::File.new(file_params)
+      if @file.file_template_id
+        content = FileTemplate.find(@file.file_template_id).content
+        content.sub! '{{file_name}}', @file.name
+        @file.content = content
+      end
       authorize!
       create_and_respond(object: @file, path: proc { implement_exercise_path(@file.context.exercise, tab: 2) })
     end

app/controllers/concerns/file_parameters.rb

@@ -1,6 +1,6 @@
 module FileParameters
   def file_attributes
-    %w(content context_id feedback_message file_id file_type_id hidden id name native_file path read_only role weight)
+    %w(content context_id feedback_message file_id file_type_id hidden id name native_file path read_only role weight file_template_id)
   end
   private :file_attributes
 end

app/controllers/exercises_controller.rb

@@ -9,7 +9,6 @@ class ExercisesController < ApplicationController
   before_action :set_exercise, only: MEMBER_ACTIONS + [:clone, :implement, :edit, :run, :statistics, :submit, :reload]
   before_action :set_external_user, only: [:statistics]
   before_action :set_file_types, only: [:create, :edit, :new, :update]
-  before_action :set_teams, only: [:create, :edit, :new, :update]
 
   skip_before_filter :verify_authenticity_token, only: [:import_proforma_xml]
   skip_after_action :verify_authorized, only: [:import_proforma_xml]
@@ -121,7 +120,7 @@ class ExercisesController < ApplicationController
   private :user_by_code_harbor_token
 
   def exercise_params
-    params[:exercise].permit(:description, :execution_environment_id, :file_id, :instructions, :public, :hide_file_tree, :allow_file_creation, :team_id, :title, files_attributes: file_attributes).merge(user_id: current_user.id, user_type: current_user.class.name)
+    params[:exercise].permit(:description, :execution_environment_id, :file_id, :instructions, :public, :hide_file_tree, :allow_file_creation, :title, files_attributes: file_attributes).merge(user_id: current_user.id, user_type: current_user.class.name)
   end
   private :exercise_params
 
@@ -197,11 +196,6 @@ class ExercisesController < ApplicationController
   end
   private :set_file_types
 
-  def set_teams
-    @teams = Team.all.order(:name)
-  end
-  private :set_teams
-
   def show
   end
 

app/controllers/file_templates_controller.rb

@@ -0,0 +1,94 @@
+class FileTemplatesController < ApplicationController
+  before_action :set_file_template, only: [:show, :edit, :update, :destroy]
+
+  def authorize!
+    authorize(@file_template || @file_templates)
+  end
+  private :authorize!
+
+  def by_file_type
+    @file_templates = FileTemplate.where(:file_type_id => params[:file_type_id])
+    authorize!
+    respond_to do |format|
+      format.json { render :show, status: :ok, json: @file_templates.to_json }
+    end
+  end
+
+  # GET /file_templates
+  # GET /file_templates.json
+  def index
+    @file_templates = FileTemplate.all.order(:file_type_id).paginate(page: params[:page])
+    authorize!
+  end
+
+  # GET /file_templates/1
+  # GET /file_templates/1.json
+  def show
+    authorize!
+  end
+
+  # GET /file_templates/new
+  def new
+    @file_template = FileTemplate.new
+    authorize!
+  end
+
+  # GET /file_templates/1/edit
+  def edit
+    authorize!
+  end
+
+  # POST /file_templates
+  # POST /file_templates.json
+  def create
+    @file_template = FileTemplate.new(file_template_params)
+    authorize!
+
+    respond_to do |format|
+      if @file_template.save
+        format.html { redirect_to @file_template, notice: 'File template was successfully created.' }
+        format.json { render :show, status: :created, location: @file_template }
+      else
+        format.html { render :new }
+        format.json { render json: @file_template.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # PATCH/PUT /file_templates/1
+  # PATCH/PUT /file_templates/1.json
+  def update
+    authorize!
+    respond_to do |format|
+      if @file_template.update(file_template_params)
+        format.html { redirect_to @file_template, notice: 'File template was successfully updated.' }
+        format.json { render :show, status: :ok, location: @file_template }
+      else
+        format.html { render :edit }
+        format.json { render json: @file_template.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /file_templates/1
+  # DELETE /file_templates/1.json
+  def destroy
+    authorize!
+    @file_template.destroy
+    respond_to do |format|
+      format.html { redirect_to file_templates_url, notice: 'File template was successfully destroyed.' }
+      format.json { head :no_content }
+    end
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_file_template
+      @file_template = FileTemplate.find(params[:id])
+    end
+
+    # Never trust parameters from the scary internet, only allow the white list through.
+    def file_template_params
+      params[:file_template].permit(:name, :file_type_id, :content)
+    end
+end

app/controllers/request_for_comments_controller.rb

@@ -82,6 +82,6 @@ class RequestForCommentsController < ApplicationController
 
     # Never trust parameters from the scary internet, only allow the white list through.
     def request_for_comment_params
-      params.require(:request_for_comment).permit(:exercise_id, :file_id, :question, :requested_at, :solved).merge(user_id: current_user.id, user_type: current_user.class.name)
+      params.require(:request_for_comment).permit(:exercise_id, :file_id, :question, :requested_at, :solved, :submission_id).merge(user_id: current_user.id, user_type: current_user.class.name)
     end
 end

app/controllers/submissions_controller.rb

@@ -6,9 +6,9 @@ class SubmissionsController < ApplicationController
   include SubmissionScoring
   include Tubesock::Hijack
 
-  before_action :set_submission, only: [:download_file, :render_file, :run, :score, :show, :statistics, :stop, :test]
+  before_action :set_submission, only: [:download, :download_file, :render_file, :run, :score, :show, :statistics, :stop, :test]
   before_action :set_docker_client, only: [:run, :test]
-  before_action :set_files, only: [:download_file, :render_file, :show]
+  before_action :set_files, only: [:download, :download_file, :render_file, :show]
   before_action :set_file, only: [:download_file, :render_file]
   before_action :set_mime_type, only: [:download_file, :render_file]
   skip_before_action :verify_authenticity_token, only: [:download_file, :render_file]
@@ -53,6 +53,20 @@ class SubmissionsController < ApplicationController
     end
   end
 
+  def download
+    # files = @submission.files.map{ }
+    # zipline( files, 'submission.zip')
+    # send_data(@file.content, filename: @file.name_with_extension)
+    require 'zip'
+    stringio = Zip::OutputStream.write_buffer do |zio|
+      @files.each do |file|
+        zio.put_next_entry(file.name_with_extension)
+        zio.write(file.content)
+      end
+    end
+    send_data(stringio.string, filename: @submission.exercise.title.tr(" ", "_") + ".zip")
+  end
+
   def download_file
     if @file.native_file?
       send_file(@file.native_file.path)
@@ -214,7 +228,11 @@ class SubmissionsController < ApplicationController
   end
 
   def score
-    render(json: score_submission(@submission))
+    hijack do |tubesock|
+      Thread.new { EventMachine.run } unless EventMachine.reactor_running? && EventMachine.reactor_thread.alive?
+      # tubesock is the socket to the client
+      tubesock.send_data JSON.dump(score_submission(@submission))
+    end
   end
 
   def set_docker_client
@@ -266,8 +284,14 @@ class SubmissionsController < ApplicationController
   private :store_error
 
   def test
-    output = @docker_client.execute_test_command(@submission, params[:filename])
-    render(json: [output])
+    hijack do |tubesock|
+      Thread.new { EventMachine.run } unless EventMachine.reactor_running? && EventMachine.reactor_thread.alive?
+
+      output = @docker_client.execute_test_command(@submission, params[:filename])
+
+      # tubesock is the socket to the client
+      tubesock.send_data JSON.dump(output)
+    end
   end
 
   def with_server_sent_events

app/controllers/teams_controller.rb

@@ -1,51 +0,0 @@
-class TeamsController < ApplicationController
-  include CommonBehavior
-
-  before_action :set_team, only: MEMBER_ACTIONS
-
-  def authorize!
-    authorize(@team || @teams)
-  end
-  private :authorize!
-
-  def create
-    @team = Team.new(team_params)
-    authorize!
-    create_and_respond(object: @team)
-  end
-
-  def destroy
-    destroy_and_respond(object: @team)
-  end
-
-  def edit
-  end
-
-  def index
-    @teams = Team.all.includes(:internal_users).order(:name).paginate(page: params[:page])
-    authorize!
-  end
-
-  def new
-    @team = Team.new
-    authorize!
-  end
-
-  def set_team
-    @team = Team.find(params[:id])
-    authorize!
-  end
-  private :set_team
-
-  def show
-  end
-
-  def team_params
-    params[:team].permit(:name, internal_user_ids: [])
-  end
-  private :team_params
-
-  def update
-    update_and_respond(object: @team, params: team_params)
-  end
-end

app/models/exercise.rb

@@ -11,7 +11,6 @@ class Exercise < ActiveRecord::Base
 
   belongs_to :execution_environment
   has_many :submissions
-  belongs_to :team
 
   has_many :external_users, source: :user, source_type: ExternalUser, through: :submissions
   has_many :internal_users, source: :user, source_type: InternalUser, through: :submissions

app/models/file_template.rb

@@ -0,0 +1,10 @@
+class FileTemplate < ActiveRecord::Base
+
+  belongs_to :file_type
+
+
+  def to_s
+    name
+  end
+
+end

app/models/file_type.rb

@@ -12,6 +12,7 @@ class FileType < ActiveRecord::Base
 
   has_many :execution_environments
   has_many :files
+  has_many :file_templates
 
   validates :binary, boolean_presence: true
   validates :editor_mode, presence: true, unless: :binary?

app/models/internal_user.rb

@@ -3,8 +3,6 @@ class InternalUser < ActiveRecord::Base
 
   authenticates_with_sorcery!
 
-  has_and_belongs_to_many :teams
-
   validates :email, presence: true, uniqueness: true
   validates :password, confirmation: true, if: :password_void?, on: :update, presence: true
   validates :role, inclusion: {in: ROLES}

app/models/request_for_comment.rb

@@ -1,5 +1,6 @@
 class RequestForComment < ActiveRecord::Base
   include Creation
+  belongs_to :submission
   belongs_to :exercise
   belongs_to :file, class_name: 'CodeOcean::File'
 
@@ -13,10 +14,8 @@ class RequestForComment < ActiveRecord::Base
         self.requested_at = Time.now
     end
 
-  def submission
-    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
@@ -25,6 +24,17 @@ 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
+    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
+  end
+
   def comments_count
     submission.files.map { |file| file.comments.size}.sum
   end
@@ -35,6 +45,6 @@ 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/models/submission.rb

@@ -2,7 +2,7 @@ class Submission < ActiveRecord::Base
   include Context
   include Creation
 
-  CAUSES = %w(assess download file render run save submit test autosave)
+  CAUSES = %w(assess download file render run save submit test autosave requestComments)
   FILENAME_URL_PLACEHOLDER = '{filename}'
 
   belongs_to :exercise
@@ -28,13 +28,17 @@ class Submission < ActiveRecord::Base
     ancestors.merge(descendants).values
   end
 
-  [:download, :render, :run, :test].each do |action|
+  [:download_file, :render, :run, :test].each do |action|
     filename = FILENAME_URL_PLACEHOLDER.gsub(/\W/, '')
     define_method("#{action}_url") do
       Rails.application.routes.url_helpers.send(:"#{action}_submission_path", self, filename).sub(filename, FILENAME_URL_PLACEHOLDER)
     end
   end
 
+  def download_url
+    Rails.application.routes.url_helpers.send(:download_submission_path, self)
+  end
+
   def main_file
     collect_files.detect(&:main_file?)
   end

app/models/team.rb

@@ -1,10 +0,0 @@
-class Team < ActiveRecord::Base
-  has_and_belongs_to_many :internal_users
-  alias_method :members, :internal_users
-
-  validates :name, presence: true
-
-  def to_s
-    name
-  end
-end

app/policies/exercise_policy.rb

@@ -13,24 +13,19 @@ class ExercisePolicy < AdminOrAuthorPolicy
   end
 
   [:clone?, :destroy?, :edit?, :statistics?, :update?].each do |action|
-    define_method(action) { admin? || author? || team_member? }
+    define_method(action) { admin? || author?}
   end
 
   [:implement?, :submit?, :reload?].each do |action|
     define_method(action) { everyone }
   end
 
-  def team_member?
-    @record.team.try(:members, []).include?(@user) if @record.team
-  end
-  private :team_member?
-
   class Scope < Scope
     def resolve
       if @user.admin?
         @scope.all
       elsif @user.internal_user?
-        @scope.where('user_id = ? OR public = TRUE OR (team_id IS NOT NULL AND team_id IN (SELECT t.id FROM teams t JOIN internal_users_teams iut ON t.id = iut.team_id WHERE iut.internal_user_id = ?))', @user.id, @user.id)
+        @scope.where('user_id = ? OR public = TRUE', @user.id)
       else
         @scope.none
       end

app/policies/file_template_policy.rb

@@ -0,0 +1,11 @@
+class FileTemplatePolicy < AdminOnlyPolicy
+
+  def show?
+    everyone
+  end
+
+  def by_file_type?
+    everyone
+  end
+
+end

app/policies/submission_policy.rb

@@ -8,7 +8,7 @@ class SubmissionPolicy < ApplicationPolicy
     everyone
   end
 
-  [:download_file?, :render_file?, :run?, :score?, :show?, :statistics?, :stop?, :test?].each do |action|
+  [:download?, :download_file?, :render_file?, :run?, :score?, :show?, :statistics?, :stop?, :test?].each do |action|
     define_method(action) { admin? || author? }
   end
 

app/policies/team_policy.rb

@@ -1,14 +0,0 @@
-class TeamPolicy < ApplicationPolicy
-  [:create?, :index?, :new?].each do |action|
-    define_method(action) { admin? }
-  end
-
-  [:destroy?, :edit?, :show?, :update?].each do |action|
-    define_method(action) { admin? || member? }
-  end
-
-  def member?
-    @record.members.include?(@user)
-  end
-  private :member?
-end

app/views/application/_navigation.html.slim

@@ -8,7 +8,7 @@
         - if current_user.admin?
           li = link_to(t('breadcrumbs.dashboard.show'), admin_dashboard_path)
           li.divider
-        - models = [ExecutionEnvironment, Exercise, Consumer, CodeHarborLink, ExternalUser, FileType, InternalUser, Submission, Team].sort_by { |model| model.model_name.human(count: 2) }
+        - models = [ExecutionEnvironment, Exercise, Consumer, CodeHarborLink, ExternalUser, FileType, FileTemplate, InternalUser].sort_by { |model| model.model_name.human(count: 2) }
         - models.each do |model|
           - if policy(model).index?
             li = link_to(model.model_name.human(count: 2), send(:"#{model.model_name.collection}_path"))

app/views/code_ocean/files/_form.html.slim

@@ -8,5 +8,9 @@
   .form-group
     = f.label(:file_type_id, t('activerecord.attributes.file.file_type_id'))
     = f.collection_select(:file_type_id, FileType.where(binary: false).order(:name), :id, :name, {selected: @exercise.execution_environment.file_type.try(:id)}, class: 'form-control')
+  .form-group
+    = f.label(:file_template_id, t('activerecord.attributes.file.file_template_id'))
+    = f.collection_select(:file_template_id, FileTemplate.all.order(:name), :id, :name, {:include_blank => true}, class: 'form-control')
   = f.hidden_field(:context_id)
+  .hidden#noTemplateLabel data-text=t('file_template.no_template_label')
   .actions = render('shared/submit_button', f: f, object: CodeOcean::File.new)

app/views/exercises/_editor_frame.html.slim

@@ -14,6 +14,6 @@
     .editor-content.hidden data-file-id=file.ancestor_id = file.content
     .editor data-file-id=file.ancestor_id data-indent-size=file.file_type.indent_size data-mode=file.file_type.editor_mode data-read-only=file.read_only data-id=file.id
 
-  button.btn.btn-primary.requestCommentsButton type='button'
-    i.fa.fa-comment-o
+  button.btn.btn-primary.requestCommentsButton type='button' id="requestComments"
+    i.fa.fa-comment
     = t('exercises.editor.requestComments')

app/views/exercises/_form.html.slim

@@ -8,8 +8,8 @@
     = f.text_field(:title, class: 'form-control', required: true)
   .form-group
     = f.label(:description)
-    = f.hidden_field(:description)
-    .form-control.markdown
+    = f.pagedown_editor :description
+
   .form-group
     = f.label(:execution_environment_id)
     = f.collection_select(:execution_environment_id, @execution_environments, :id, :name, {}, class: 'form-control')
@@ -17,9 +17,6 @@
     = f.label(:instructions)
     = f.hidden_field(:instructions)
     .form-control.markdown
-  /.form-group
-    = f.label(:team_id)
-    = f.collection_select(:team_id, @teams, :id, :name, {include_blank: true}, class: 'form-control')
   .checkbox
     label
       = f.check_box(:public)

app/views/exercises/external_users/statistics.html.slim

@@ -50,9 +50,9 @@ h1 = "#{@exercise} (external user #{@external_user})"
               td
                 -submission.testruns.each do |run|
                   - if run.passed
-                    .unit-test-result.positive-result
+                    .unit-test-result.positive-result  title=run.output
                   - else
-                    .unit-test-result.negative-result
+                    .unit-test-result.negative-result title=run.output
               td = Time.at(deltas[1..index].inject(:+)).utc.strftime("%H:%M:%S") if index > 0
               -working_times_until.push((Time.at(deltas[1..index].inject(:+)).utc.strftime("%H:%M:%S") if index > 0))
     p = t('.addendum')

app/views/exercises/index.html.slim

@@ -13,7 +13,6 @@ h1 = Exercise.model_name.human(count: 2)
     thead
       tr
         th = sort_link(@search, :title, t('activerecord.attributes.exercise.title'))
-        th = sort_link(@search, :user_id, t('activerecord.attributes.exercise.user'))
         th = sort_link(@search, :execution_environment_id, t('activerecord.attributes.exercise.execution_environment'))
         th = t('.test_files')
         th = t('activerecord.attributes.exercise.maximum_score')
@@ -27,17 +26,23 @@ h1 = Exercise.model_name.human(count: 2)
       - @exercises.each do |exercise|
         tr data-id=exercise.id
           td = exercise.title
-          td = link_to_if(exercise.author && policy(exercise.author).show?, exercise.author, exercise.author)
           td = link_to_if(exercise.execution_environment && policy(exercise.execution_environment).show?, exercise.execution_environment, exercise.execution_environment)
           td = exercise.files.teacher_defined_tests.count
           td = exercise.maximum_score
           td.public data-value=exercise.public? = symbol_for(exercise.public?)
-          td = link_to(t('shared.show'), exercise) if policy(exercise).show?
           td = link_to(t('shared.edit'), edit_exercise_path(exercise)) if policy(exercise).edit?
-          td = link_to(t('shared.destroy'), exercise, data: {confirm: t('shared.confirm_destroy')}, method: :delete) if policy(exercise).destroy?
-          td = link_to(t('.clone'), clone_exercise_path(exercise), data: {confirm: t('shared.confirm_destroy')}, method: :post) if policy(exercise).clone?
           td = link_to(t('.implement'), implement_exercise_path(exercise)) if policy(exercise).implement?
           td = link_to(t('shared.statistics'), statistics_exercise_path(exercise)) if policy(exercise).statistics?
 
+          td
+            .btn-group
+              button.btn.btn-primary-outline.btn-xs.dropdown-toggle data-toggle="dropdown" type="button" = t('shared.actions_button')
+              span.caret
+              span.sr-only Toggle Dropdown
+              ul.dropdown-menu.pull-right role="menu"
+                li = link_to(t('shared.show'), exercise) if policy(exercise).show?
+                li = link_to(t('shared.destroy'), exercise, data: {confirm: t('shared.confirm_destroy')}, method: :delete) if policy(exercise).destroy?
+                li = link_to(t('.clone'), clone_exercise_path(exercise), data: {confirm: t('shared.confirm_destroy')}, method: :post) if policy(exercise).clone?
+
 = render('shared/pagination', collection: @exercises)
 p = render('shared/new_button', model: Exercise)

app/views/exercises/show.html.slim

@@ -12,7 +12,6 @@ h1
 = row(label: 'exercise.description', value: render_markdown(@exercise.description))
 = row(label: 'exercise.execution_environment', value: link_to_if(policy(@exercise.execution_environment).show?, @exercise.execution_environment, @exercise.execution_environment))
 /= row(label: 'exercise.instructions', value: render_markdown(@exercise.instructions))
-= row(label: 'exercise.team', value: @exercise.team ? link_to(@exercise.team, @exercise.team) : nil)
 = row(label: 'exercise.maximum_score', value: @exercise.maximum_score)
 = row(label: 'exercise.public', value: @exercise.public?)
 = row(label: 'exercise.hide_file_tree', value: @exercise.hide_file_tree?)

app/views/file_templates/_form.html.slim

@@ -0,0 +1,12 @@
+= form_for(@file_template) do |f|
+  = render('shared/form_errors', object: @file_template)
+  .form-group
+    = f.label(:name)
+    = f.text_field(:name, class: 'form-control', required: true)
+  .form-group
+    = f.label(:file_type_id)
+    = f.collection_select(:file_type_id, FileType.all.order(:name), :id, :name, {}, class: 'form-control')
+  .form-group
+    = f.label(:content)
+    = f.text_area(:content, class: 'form-control')
+  .actions = render('shared/submit_button', f: f, object: @file_template)

app/views/file_templates/edit.html.slim

@@ -0,0 +1,3 @@
+h1 = @file_template
+
+= render('form')

app/views/file_templates/index.html.slim

@@ -0,0 +1,20 @@
+h1 = FileTemplate.model_name.human(count: 2)
+
+.table-responsive
+  table.table
+    thead
+      tr
+        th = t('activerecord.attributes.file_template.name')
+        th = t('activerecord.attributes.file_template.file_type')
+        th colspan=3 = t('shared.actions')
+    tbody
+      - @file_templates.each do |file_template|
+        tr
+          td = file_template.name
+          td = link_to(file_template.file_type, file_type_path(file_template.file_type))
+          td = link_to(t('shared.show'), file_template)
+          td = link_to(t('shared.edit'), edit_file_template_path(file_template))
+          td = link_to(t('shared.destroy'), file_template, data: {confirm: t('shared.confirm_destroy')}, method: :delete)
+
+= render('shared/pagination', collection: @file_templates)
+p = render('shared/new_button', model: FileTemplate)

app/views/file_templates/new.html.slim

@@ -0,0 +1,3 @@
+h1 = t('shared.new_model', model: FileTemplate.model_name.human)
+
+= render('form')

app/views/file_templates/show.html.slim

@@ -0,0 +1,7 @@
+h1
+  = @file_template
+  = render('shared/edit_button', object: @file_template)
+
+= row(label: 'file_template.name', value: @file_template.name)
+= row(label: 'file_template.file_type', value: link_to(@file_template.file_type, file_type_path(@file_template.file_type)))
+= row(label: 'file_template.content', value: @file_template.content)

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

@@ -1,21 +1,14 @@
 <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_id =  ActiveRecord::Base.connection.execute("select id from submissions
-          where exercise_id =
-          #{@request_for_comment.exercise_id} AND
-          user_id =  #{@request_for_comment.user_id} AND
-          '#{@request_for_comment.created_at}' > created_at
-          order by created_at desc
-          limit 1").first['id'].to_i
-        submission = Submission.find(submission_id)
+        submission =  @request_for_comment.submission
       %>
-    <%= user.displayname %> | <%= @request_for_comment.requested_at %>
+    <%= user.displayname %> | <%= @request_for_comment.created_at.localtime %>
   </p>
   <h5>
-    <u><%= t('activerecord.attributes.exercise.instructions') %>:</u> "<%= @request_for_comment.exercise.description %>"
+    <u><%= t('activerecord.attributes.exercise.description') %>:</u> "<%= render_markdown(@request_for_comment.exercise.description) %>"
   </h5>
 
   <h5>

app/views/submissions/show.json.jbuilder

@@ -1 +1 @@
-json.extract! @submission, :download_url, :id, :score_url, :render_url, :run_url, :stop_url, :test_url, :files
+json.extract! @submission, :download_url, :download_file_url, :id, :score_url, :render_url, :run_url, :stop_url, :test_url, :files

app/views/teams/_form.html.slim

@@ -1,9 +0,0 @@
-= form_for(@team) do |f|
-  = render('shared/form_errors', object: @team)
-  .form-group
-    = f.label(:name)
-    = f.text_field(:name, class: 'form-control', required: true)
-  .form-group
-    = f.label(:internal_user_ids)
-    = f.collection_select(:internal_user_ids, InternalUser.all.order(:name), :id, :name, {}, {class: 'form-control', multiple: true})
-  .actions = render('shared/submit_button', f: f, object: @team)

app/views/teams/edit.html.slim

@@ -1,3 +0,0 @@
-h1 = @hint
-
-= render('form')

app/views/teams/index.html.slim

@@ -1,20 +0,0 @@
-h1 = Team.model_name.human(count: 2)
-
-.table-responsive
-  table.table
-    thead
-      tr
-        th = t('activerecord.attributes.team.name')
-        th = t('activerecord.attributes.team.internal_user_ids')
-        th colspan=3 = t('shared.actions')
-    tbody
-      - @teams.each do |team|
-        tr
-          td = team.name
-          td = team.members.count
-          td = link_to(t('shared.show'), team_path(team.id))
-          td = link_to(t('shared.edit'), edit_team_path(team.id))
-          td = link_to(t('shared.destroy'), team_path(team.id), data: {confirm: t('shared.confirm_destroy')}, method: :delete)
-
-= render('shared/pagination', collection: @teams)
-p = render('shared/new_button', model: Team, path: new_team_path)

app/views/teams/new.html.slim

@@ -1,3 +0,0 @@
-h1 = t('shared.new_model', model: Team.model_name.human)
-
-= render('form')

app/views/teams/show.html.slim

@@ -1,9 +0,0 @@
-h1
-  = @team
-  = render('shared/edit_button', object: @team, path: edit_team_path(@team.id))
-
-= row(label: 'team.name', value: @team.name)
-= row(label: 'team.internal_user_ids') do
-  ul.list-unstyled
-    - @team.members.order(:name).each do |internal_user|
-      li = link_to(internal_user, internal_user)