peewee.OperationalError：没有这样的 function：json

Question

Python version: 3.8.3

Peewee version: 3.13.3

I want to create an object which include a JSONField,

db = SqliteExtDatabase('../db.sqlite', pragmas=(('journal_mode', 'wal'), ('foreign_keys', 1)))

class Msg(BaseModel):
    id = AutoField()
    detail = JSONField()

def insert_msg(detail: dict):
    msg = Msg.create(detail=detail)
    msg.save()

but when I call the method insert_msg({"name":"abc"}) , an error comes out

peewee.OperationalError: no such function: json

Answer 1

You need to have the sqlite json1 extension installed. Here are some links which may help:

• http://charlesleifer.com/blog/compiling-sqlite-for-use-with-python-applications/
• https://sqlite.org/json1.html
• https://github.com/coleifer/pysqlite3 (pip install pysqlite3-binary for pre-compiled/statically-linked pysqlite with json ext)