How do I convert a Django QuerySet into list of dicts?

Question

Use the .values() method:

>>> Blog.objects.values()
[{'id': 1, 'name': 'Beatles Blog', 'tagline': 'All the latest Beatles news.'}],
>>> Blog.objects.values('id', 'name')
[{'id': 1, 'name': 'Beatles Blog'}]

Note: the result is a QuerySet which mostly behaves like a list, but isn't actually an instance of list. Use list(Blog.objects.values(…)) if you really need an instance of list.

The .values() method will return you a result of type ValuesQuerySet which is typically what you need in most cases.

But if you wish, you could turn ValuesQuerySet into a native Python list using Python list comprehension as illustrated in the example below.

result = Blog.objects.values()             # return ValuesQuerySet object
list_result = [entry for entry in result]  # converts ValuesQuerySet into Python list
return list_result

I find the above helps if you are writing unit tests and need to assert that the expected return value of a function matches the actual return value, in which case both expected_result and actual_result must be of the same type (e.g. dictionary).

actual_result = some_function()
expected_result = {
    # dictionary content here ...
}
assert expected_result == actual_result

If you need native data types for some reason (e.g. JSON serialization) this is my quick 'n' dirty way to do it:

data = [{'id': blog.pk, 'name': blog.name} for blog in blogs]

As you can see building the dict inside the list is not really DRY so if somebody knows a better way ...

Type Cast to List

    job_reports = JobReport.objects.filter(job_id=job_id, status=1).values('id', 'name')

    json.dumps(list(job_reports))