'column_name' argument of DeferredForeignKey field is ignored

class Task(Model):
    [...]
    CreateUser = DeferredForeignKey('User', column_name='createuser', null=True, field='ID', index=False)
    UpdateUser = DeferredForeignKey('User', column_name='updateuser', null=True, field='ID', index=False)

>>> Task.select().first()
2019-03-14 12:41:03,109 DEBUG    [peewee.py:2823] ('SELECT "t1"."id", "t1"."updatedt", "t1"."createdt", "t1"."state", "t1"."CreateUser", "t1"."UpdateUser", "t1"."name", "t1"."type", "t1"."start_time", "t1"."finish_time", "t1"."deadline", "t1"."result", "t1"."scenario", "t1"."wait_time", "t1"."cases_id", "t1"."locked_by", "t1"."description", "t1"."comments", "t1"."responsible_role", "t1"."previous_tasks" FROM "tasks" AS "t1" LIMIT %s', [1])
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/peewee.py", line 2835, in execute_sql
    cursor.execute(sql, params or ())
  File "/usr/local/lib/python3.6/site-packages/psycopg2/extras.py", line 141, in execute
    return super(DictCursor, self).execute(query, vars)
psycopg2.ProgrammingError: column t1.CreateUser does not exist
LINE 1: ..., "t1"."updatedt", "t1"."createdt", "t1"."state", "t1"."Crea...
                                                             ^
HINT:  Perhaps you meant to reference the column "t1.createuser".


During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.6/site-packages/peewee.py", line 1698, in inner
    return method(self, database, *args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/peewee.py", line 1958, in first
    return self.peek(database, n=n)
  File "/usr/local/lib/python3.6/site-packages/peewee.py", line 1698, in inner
    return method(self, database, *args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/peewee.py", line 1949, in peek
    rows = self.execute(database)[:n]
  File "/usr/local/lib/python3.6/site-packages/peewee.py", line 1698, in inner
    return method(self, database, *args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/peewee.py", line 1769, in execute
    return self._execute(database)
  File "/usr/local/lib/python3.6/site-packages/peewee.py", line 1943, in _execute
    cursor = database.execute(self)
  File "/usr/local/lib/python3.6/site-packages/playhouse/postgres_ext.py", line 464, in execute
    cursor = self.execute_sql(sql, params, commit=commit)
  File "/usr/local/lib/python3.6/site-packages/peewee.py", line 2842, in execute_sql
    self.commit()
  File "/usr/local/lib/python3.6/site-packages/peewee.py", line 2627, in __exit__
    reraise(new_type, new_type(*exc_args), traceback)
  File "/usr/local/lib/python3.6/site-packages/peewee.py", line 178, in reraise
    raise value.with_traceback(tb)
  File "/usr/local/lib/python3.6/site-packages/peewee.py", line 2835, in execute_sql
    cursor.execute(sql, params or ())
  File "/usr/local/lib/python3.6/site-packages/psycopg2/extras.py", line 141, in execute
    return super(DictCursor, self).execute(query, vars)
peewee.ProgrammingError: column t1.CreateUser does not exist
LINE 1: ..., "t1"."updatedt", "t1"."createdt", "t1"."state", "t1"."Crea...
                                                             ^
HINT:  Perhaps you meant to reference the column "t1.createuser".

May be related to #1812

[droserasprout]

@coleifer thanks for your time. I can reproduce this issue in my notebook but it’s messy now, will provide updated tests after some digging.

@NicolasCaous first, you wrong, database is initialized properly. Second, you’re pretty rude, man. I have provided just enough data to get maintainer’s answer that’s not an expected behaviour in some way.

[coleifer]

Honestly, I kinda feel like attempting to query with an unresolved deferred foreign-key should be an error. But for now, I’ve just decided to carry forward the column name, so that it works as you’d expect.