Doesn't support with random objects, `order_by('?')`

[agusmakmun]

In [11]: from practical_foobar_egg_labs.courses.models.course import CourseModel

In [12]: from practical_foobar_egg_labs.courses.utils.storage import CourseData

In [13]: courses = CourseData().get_courses()
INFO 2021-05-26 00:00:40,271 storage 1 139861811062592 [storage.py:87] [queryset_courses] Retrieved courses from cache.

In [14]: courses
Out[14]: 
[{'title': 'Foobar Foundation Course',
  'description': 'The Foobar Foundation course is our beginner course which prepares you for the professional, expert and architect courses',
  'image': 'cdp2.png',
  'keywords': ['SAST', 'DAST', 'IaC', 'SCA'],
  'flow': ['linux-basics',
   'docker',
   'continuous-integration-and-continous-delivery'],
  'details': {'steps': [{'title': 'Step 1 - Download the code from the repo',
     'text': 'step1.md'},
    {'title': 'Step 2 - Install the TruffleHog', 'text': 'step2.md'},
    {'title': 'Step 3 - Run the SAST Scan', 'text': 'step3.md'}],
   'intro': {'text': 'intro.md'},
   'finish': {'text': 'finish.md'}},
  'course_slug': 'foobar-foundation'},
 {'title': 'Python Foundation Course',
  'description': 'The Python Foundation course is our beginner course which prepares you for the professional, expert and architect courses',
  'image': 'cdp2.png',
  'keywords': ['Python', 'Programming'],
  'flow': ['python-basics', 'python-intermediate', 'python-professional'],
  'details': {'steps': [{'title': 'Step 1 - Download the code from the repo',
     'text': 'step1.md'},
    {'title': 'Step 2 - Install the TruffleHog', 'text': 'step2.md'},
    {'title': 'Step 3 - Run the SAST Scan', 'text': 'step3.md'}],
   'intro': {'text': 'intro.md'},
   'finish': {'text': 'finish.md'}},
  'course_slug': 'python-foundation'}]

In [15]: 

In [15]: for course_data in courses:
    ...:     course_slug = course_data.pop('course_slug', None)
    ...:     CourseModel.objects.get_or_create(
    ...:         course_slug=course_slug,
    ...:         defaults=course_data
    ...:     )
    ...: 

In [16]: 
In [17]: CourseModel.objects.all()
Out[17]: 
[CourseModel(course_slug='foobar-foundation', title='Foobar Foundation Course', description='The Foobar Foundation course is our beginner course which prepares you for the professional, expert and architect courses', image='cdp2.png', keywords=['SAST', 'DAST', 'IaC', 'SCA'], flow=['linux-basics', 'docker', 'continuous-integration-and-continous-delivery'], details={'steps': [{'title': 'Step 1 - Download the code from the repo', 'text': 'step1.md'}, {'title': 'Step 2 - Install the TruffleHog', 'text': 'step2.md'}, {'title': 'Step 3 - Run the SAST Scan', 'text': 'step3.md'}], 'intro': {'text': 'intro.md'}, 'finish': {'text': 'finish.md'}}),
 CourseModel(course_slug='python-foundation', title='Python Foundation Course', description='The Python Foundation course is our beginner course which prepares you for the professional, expert and architect courses', image='cdp2.png', keywords=['Python', 'Programming'], flow=['python-basics', 'python-intermediate', 'python-professional'], details={'steps': [{'title': 'Step 1 - Download the code from the repo', 'text': 'step1.md'}, {'title': 'Step 2 - Install the TruffleHog', 'text': 'step2.md'}, {'title': 'Step 3 - Run the SAST Scan', 'text': 'step3.md'}], 'intro': {'text': 'intro.md'}, 'finish': {'text': 'finish.md'}})]

In [18]: CourseModel.objects.all().order_by('?')
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-18-71eea73a8983> in <module>
----> 1 CourseModel.objects.all().order_by('?')

/usr/local/lib/python3.8/site-packages/reobject/query/queryset.py in order_by(self, *fields)
    161 
    162         return type(self)(
--> 163             sorted(self, key=cmp(*fields)),
    164             model=self.model
    165         )

/usr/local/lib/python3.8/site-packages/reobject/utils.py in g(obj)
     11 
     12     def g(obj):
---> 13         return tuple(
     14             resolve_attr(obj, attr) for attr in items
     15         )

/usr/local/lib/python3.8/site-packages/reobject/utils.py in <genexpr>(.0)
     12     def g(obj):
     13         return tuple(
---> 14             resolve_attr(obj, attr) for attr in items
     15         )
     16 

/usr/local/lib/python3.8/site-packages/reobject/utils.py in resolve_attr(obj, attr)
     26             obj = obj.get(name)
     27         else:
---> 28             obj = getattr(obj, name)
     29 
     30     return obj if not reverse else -obj

AttributeError: 'CourseModel' object has no attribute '?'

In [19]: 

[agusmakmun]

.random() only select 1 object, but I want do more objects.

CourseModel.objects.random()