#29096: JSONField() as base_field for ArrayField() for creating an object array
-------------------------------------+-------------------------------------
Reporter: Jim Biggs | Owner: nobody
Type: Bug | Status: closed
Component: contrib.postgres | Version: 2.0
Severity: Normal | Resolution: duplicate
Keywords: serialization, | Triage Stage:
JSONField, ArrayField | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Description changed by Jim Biggs:
Old description:
> Current Environment:
> • Latest Django-2
> • Latest Django Rest Framework
> • PostgreSQL-9.5
> • Ubuntu-16.04
>
> My understanding of the JSONField() is that it is a field container for a
> single JSON object. My use-case requires an array of objects. So, I
> created an ArrayField() that nests a JSONField() as its model base_field
> -- as shown in the code block, below:
>
> {{{
> questions = ArrayField(JSONField(null=True, blank=True, default=dict),
> max_length=200, blank=True, default=[])
> }}}
>
> Everything seems to work fine with the exception of the JSON object being
> stringified, as shown below:
>
> {{{
> "questions": [
> "{
> \"question\": \"What is the answer to
> everything?\",
> \"answer\": \"42\"
> }",
> "{
> \"question\": \"What year is it?\",
> \"answer\": \"2018\"
> }"
> ],
> }}}
>
> I believe the inserted backslashes (\) are a result of the serialization
> process. My question is whether there is a better way for me to define
> this object array model field?
>
> Regards... Jim
New description:
Current Environment:
• Latest Django-2
• Latest Django Rest Framework
• PostgreSQL-9.5
• Ubuntu-16.04
My understanding of the JSONField() is that it is a field container for a
single JSON object. My use-case requires an array of objects. So, I
created an ArrayField() that nests a JSONField() as its model base_field
-- as shown in the code block, below:
{{{
questions = ArrayField(JSONField(null=True, blank=True, default=dict),
max_length=200, blank=True, default=[])
}}}
Everything seems to work fine with the exception of the JSON object being
stringified, as shown below:
{{{
"questions": [
"{
\"question\": \"What is the answer to everything?\",
\"answer\": \"42\"
}",
"{
\"question\": \"What year is it?\",
\"answer\": \"2018\"
}"
]
}}}
I believe the inserted backslashes (\) are a result of the serialization
process. My question is whether there is a better way for me to define
this object array model field?
Regards... Jim
--
--
Ticket URL: <https://code.djangoproject.com/ticket/29096#comment:2>
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