Allow instructors to filter answers by content.

problem_builder/public/js/student_answers_dashboard.js

@@ -13,6 +13,7 @@ function StudentAnswersDashboardBlock(runtime, element) {
     var $blockTypes = $element.find("select[name='block_types']");
     var $rootBlockId = $element.find("input[name='root_block_id']");
     var $username = $element.find("input[name='username']");
+    var $matchString = $element.find("input[name='match_string']");
     var $resultTable = $element.find('.data-export-results');
 
     var status;
@@ -139,7 +140,8 @@ function StudentAnswersDashboardBlock(runtime, element) {
                 data = {
                     block_types: $blockTypes.val(),
                     root_block_id: $rootBlockId.val(),
-                    username: $username.val()
+                    username: $username.val(),
+                    match_string: $matchString.val()
                 };
                 data = JSON.stringify(data);
             } else {

problem_builder/student_answers_dashboard.py

@@ -163,6 +163,7 @@ class StudentAnswersDashboardBlock(XBlock):
         block_types = data.get('block_types', None)
         username = data.get('username', None)
         root_block_id = data.get('root_block_id', None)
+        match_string = data.get('match_string', None)
         if not root_block_id:
             root_block_id = self.scope_ids.usage_id
             # Block ID not in workbench runtime.
@@ -190,7 +191,8 @@ class StudentAnswersDashboardBlock(XBlock):
             root_block_id,
             block_types,
             user_id,
-            get_root=get_root,
+            match_string,
+            get_root=get_root
         )
         if async_result.ready():
             # In development mode, the task may have executed synchronously.

problem_builder/tasks.py

@@ -21,7 +21,7 @@ logger = get_task_logger(__name__)
 
 
 @task()
-def export_data(course_id, source_block_id_str, block_types, user_id, get_root=True):
+def export_data(course_id, source_block_id_str, block_types, user_id, match_string, get_root=True):
     """
     Exports student answers to all MCQ questions to a CSV file.
     """
@@ -93,7 +93,9 @@ def export_data(course_id, source_block_id_str, block_types, user_id, get_root=T
             student_id = submission.get('student_id', user_id)
 
             # Extract data for display
-            row = _extract_data_for_display(submission, student_id, block_type)
+            # "row" will be None if answer does not match "match_string"
+            row = _extract_data_for_display(submission, student_id, block_type, match_string)
+            if row:
                 rows.append(row)
 
     # Generate the CSV:
@@ -113,7 +115,7 @@ def export_data(course_id, source_block_id_str, block_types, user_id, get_root=T
     }
 
 
-def _extract_data_for_display(submission, student_id, block_type):
+def _extract_data_for_display(submission, student_id, block_type, match_string):
     """
     Extract data that will be displayed on Student Answers Dashboard
     from `submission`.
@@ -143,6 +145,10 @@ def _extract_data_for_display(submission, student_id, block_type):
                 answer = choice_block.content
                 break
 
+    # Short-circuit if answer does not match search criteria
+    if not match_string.lower() in answer.lower():
+        return
+
     # Unit
     mentoring_block = modulestore().get_item(block.parent)
     unit = modulestore().get_item(mentoring_block.parent)

problem_builder/templates/html/student_answers_dashboard.html

@@ -41,6 +41,17 @@
       {% trans "Input the username of a student if you wish to query for a specific one. Otherwise, it will grab all results for all students." %}
     </div>
   </div>
+  <div class="data-export-field-container">
+    <div class="data-export-field">
+      <label>
+        <span>{% trans "Match answers containing:" %}</span>
+        <input type="text" name="match_string" />
+      </label>
+    </div>
+    <div class="data-export-helptext">
+      {% trans "Input text that all answers must match (case will be ignored). Otherwise, answers will not be filtered by content." %}
+    </div>
+  </div>
 </div>
 <div class="data-export-actions">
   <button class="data-export-start">{% trans "Start a new export" %}</button>