Expose serialization options in sqlite_ext.JSONField (or use better defaults)

Currently, sqlite_ext.py seems to use json.dumps without any options, which means the defaults separators=(', ', ': ') and ensure_ascii=True are assumed. These are a waste of space, and ensure_ascii also reduces human readability of non-ASCII text without real world benefit (since SQLite is Unicode-safe).

Compare the result of SQLite JSON1 extension’s builtin json function:

INSERT INTO entry(doc) VALUES(json('{ "lang":  "中文" }'));

=>

INSERT INTO entry VALUES(1,'{"lang":"中文"}');

and peewee:

Entry.insert(doc=dict(lang='中文'))

=>

INSERT INTO entry VALUES(1,'{"lang": "\u4e2d\u6587"}');

It would be nice if serialization options are exposed, or just use separators=(',', ':') and ensure_ascii=False.

[leandrosalo]

If for some reason someone ends up here for the Your version of psycopg2 does not support JSON. exception then try to run pip install --upgrade psycopg2 and try again. Hope this helps someone even tho it looks like a dumb or obvious solution.

[czitian]

WOW, thanks for the fast reply. I didn’t realize that. BinaryJSONField seems work fine, even without custom dumps function.