Added functionality for default datasets.

Incorporated dataset selector into test creation.

ref-test/admin/models/forms.py

@@ -55,6 +55,8 @@ class CreateTest(FlaskForm):
     ]
     expiry_date = DateField('Expiry Date', format="%Y-%m-%d", validators=[InputRequired()], default = date.today() + timedelta(days=1) )
     time_limit = SelectField('Time Limit', choices=time_options)
+    dataset = SelectField('Question Dataset')
 
 class UploadDataForm(FlaskForm):
-    data_file = FileField('Data File', validators=[FileRequired(), FileAllowed(['json'])])
+    data_file = FileField('Data File', validators=[FileRequired(), FileAllowed(['json'])])
+    default = BooleanField('Make Default', render_kw={'checked': True})

ref-test/admin/models/tests.py

@@ -3,17 +3,20 @@ from datetime import datetime
 from uuid import uuid4
 from flask import flash, jsonify
 import secrets
+import os
+from json import dump, loads
 
-from main import db
+from main import app, db
 from common.security import encrypt
 
 class Test:
-    def __init__(self, _id=None, start_date=None, expiry_date=None, time_limit=None, creator=None):
+    def __init__(self, _id=None, start_date=None, expiry_date=None, time_limit=None, creator=None, dataset=None):
         self._id = _id
         self.start_date = start_date
         self.expiry_date = expiry_date
         self.time_limit = None if time_limit == 'none' or time_limit == '' else time_limit
         self.creator = creator
+        self.dataset = dataset
     
     def create(self):
         test = {
@@ -23,9 +26,16 @@ class Test:
             'expiry_date': self.expiry_date,
             'time_limit': self.time_limit,
             'creator': encrypt(self.creator),
-            'test_code': secrets.token_hex(6).upper()
+            'test_code': secrets.token_hex(6).upper(),
+            'dataset': self.dataset
         }
         if db.tests.insert_one(test):
+            dataset_file_path = os.path.join(app.config["DATA_FILE_DIRECTORY"],self.dataset)
+            with open(dataset_file_path, 'r') as dataset_file:
+                data = loads(dataset_file.read())
+            data['meta']['tests'].append(self._id)
+            with open(dataset_file_path, 'w') as dataset_file:
+                dump(data, dataset_file, indent=2)
             flash(f'Created a new exam with Exam Code <strong>{self.render_test_code(test["test_code"])}</strong>.', 'success')
             return jsonify({'success': test}), 200
         return jsonify({'error': f'Could not create exam. An error occurred.'}), 400
@@ -54,7 +64,15 @@ class Test:
         return test_code.replace('—', '')
     
     def delete(self):
+        if self.dataset is None:
+            self.dataset = db.tests.find_one({'_id': self._id})['dataset']
         if db.tests.delete_one({'_id': self._id}):
+            dataset_file_path = os.path.join(app.config["DATA_FILE_DIRECTORY"],self.dataset)
+            with open(dataset_file_path, 'r') as dataset_file:
+                data = loads(dataset_file.read())
+            data['meta']['tests'].remove(self._id)
+            with open(dataset_file_path, 'w') as dataset_file:
+                dump(data, dataset_file, indent=2)
             message = 'Deleted exam.'
             flash(message, 'alert')
             return jsonify({'success': message}), 200