将 psqlextra.backend 与 django 一起使用时无法将数据插入 ArrayField

Not able to insert data into ArrayField while using psqlextra.backend with django

我有一个带有 ArrayField 的模型,以 JSONField 作为基础。当我尝试插入数据时,出现以下错误:

ProgrammingError: column "data" is of type jsonb[] but expression is of type text[]
LINE 1: ...e_status_code", "is_success", "error") VALUES (1, ARRAY['"a"...
                                                             ^
HINT:  You will need to rewrite or cast the expression.

我正在使用 psqlextra.backend 作为我的默认数据库引擎。我的模型和其他相关代码是:

from django.db import models
from django.contrib.postgres.fields import JSONField, ArrayField

class TestModel(models.Model):
    data = ArrayField(
        JSONField(),
        blank=True,
        )

我对应的迁移文件如下所示:

import django.contrib.postgres.fields
import django.contrib.postgres.fields.jsonb
from django.db import migrations


class Migration(migrations.Migration):

    dependencies = [
        ('emails', '0003_auto_20200408_1351'),
    ]

    operations = [
        migrations.RemoveField(
            model_name='TestModel',
            name='data',
        ),
        migrations.AddField(
            model_name='TestModel',
            name='data',
            field=django.contrib.postgres.fields.ArrayField(base_field=django.contrib.postgres.fields.jsonb.JSONField(), blank=True, size=None),
        ),
    ]

我试过这样添加数据:

TestModel.objects.create(
    data= [{"a":"b"}, {"c":"d"}]
    )

进一步挖掘后,这是 Django<2.2 中的一个已知错误

https://code.djangoproject.com/ticket/28291

升级 django 成功了!