#32483: QuerySet.values()/values_list() with JSONField returns integers instead
of
booleans on SQLite.
-------------------------------------+-------------------------------------
Reporter: Matthew Cornell | Owner: nobody
Type: Bug | Status: new
Component: Documentation | Version: 3.1
Severity: Normal | Resolution:
Keywords: jsonfield querying | Triage Stage: Accepted
sqlite |
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Changes (by Mariusz Felisiak):
* component: Database layer (models, ORM) => Documentation
* severity: Release blocker => Normal
Comment:
It seems there is not much we can do, the SQL query is correct.
Unfortunately `JSON_EXTRACT()` returns integers for boolean values and
it's a [https://www.sqlite.org/json1.html#jex documented] behavior:
> ''The json_extract(X,P1,P2,...) extracts and returns one or more values
from the well-formed JSON at X. If only a single path P1 is provided, then
the SQL datatype of the result is NULL for a JSON null, INTEGER or REAL
for a JSON numeric value, **an INTEGER zero for a JSON false value, an
INTEGER one for a JSON true value**, ...''
There is no way to recognize that we should automatically cast a value to
boolean, you can use `Cast('json_field__is_true', models.BooleanField())`.
Changing to a documentation issue.
--
Ticket URL: <https://code.djangoproject.com/ticket/32483#comment:4>
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