remove answer model, update question

Author: rockstarr-programmerr

classroom/migrations/0007_auto_20211005_2147.py

@@ -0,0 +1,21 @@
+# Generated by Django 3.2.7 on 2021-10-05 14:47
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('classroom', '0006_readingquestion_passage'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='readingquestion',
+            name='answers',
+            field=models.CharField(blank=True, max_length=255),
+        ),
+        migrations.DeleteModel(
+            name='ReadingAnswer',
+        ),
+    ]

classroom/models/__init__.py

@@ -1,4 +1,3 @@
 from .classroom import Classroom
-from .reading_answer import ReadingAnswer
 from .reading_exercise import ReadingExercise
 from .reading_question import ReadingQuestion

classroom/models/abstracts/answer.py

@@ -9,9 +9,17 @@ class Types(models.TextChoices):
         YES_NO = 'yes_no', _('Yes / No / Not given')
         FILL_BLANK = 'fill_blank', _('Fill in the blank')
 
+    ANSWERS_DELEMITER = ' | '
+    _TRUE = 'TRUE'
+    _FALSE = 'FALSE'
+    _YES = 'YES'
+    _NO = 'NO'
+    _NOT_GIVEN = 'NOT_GIVEN'
+
     from_number = models.PositiveSmallIntegerField()
     to_number = models.PositiveSmallIntegerField(null=True)
     question_type = models.CharField(max_length=30, choices=Types.choices)
+    answers = models.CharField(max_length=255, blank=True)
     correct_answer = models.CharField(max_length=255)
 
     class Meta:
@@ -20,8 +28,33 @@ class Meta:
     def __str__(self):
         return f'{self.get_question_number_display()} | {self.question_type} | {self.correct_answer[:50]}'
 
+    def save(self, *args, **kwargs):
+        self.set_default_answers()
+        return super().save(*args, **kwargs)
+
     def get_question_number_display(self):
         display = str(self.from_number)
         if self.to_number is not None and self.to_number != self.from_number:
             display += f' - {self.to_number}'
         return display
+
+    def set_default_answers(self):
+        if self.is_true_false():
+            self.answers = self.ANSWERS_DELEMITER.join([
+                self._TRUE, self._FALSE, self._NOT_GIVEN
+            ])
+        elif self.is_yes_no():
+            self.answers = self.ANSWERS_DELEMITER.join([
+                self._YES, self._NO, self._NOT_GIVEN
+            ])
+        elif not self.is_multiple_choice():
+            self.answers = ''
+
+    def is_true_false(self):
+        return self.question_type == self.Types.TRUE_FALSE
+
+    def is_yes_no(self):
+        return self.question_type == self.Types.YES_NO
+
+    def is_multiple_choice(self):
+        return self.question_type == self.Types.MULTIPLE_CHOICE

classroom/models/abstracts/question.py

@@ -9,7 +9,8 @@ class Meta:
         model = ReadingQuestion
         fields = [
             'pk', 'url', 'exercise', 'passage',
-            'from_number', 'to_number', 'question_type', 'correct_answer',
+            'from_number', 'to_number', 'question_type',
+            'answers', 'correct_answer',
         ]
         extra_kwargs = {
             'url': {'view_name': 'reading-question-detail'},

classroom/models/reading_answer.py

@@ -214,7 +214,7 @@
     },
     'TEST_REQUEST_DEFAULT_FORMAT': 'json',
     'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.LimitOffsetPagination',
-    'PAGE_SIZE': 25,
+    'PAGE_SIZE': 40,  # Each exercise has 40 questions
     'DEFAULT_FILTER_BACKENDS': [
         'django_filters.rest_framework.DjangoFilterBackend',
         'rest_framework.filters.OrderingFilter',