sqlalchemy query

model_query.py

from sqlalchemy.orm import load_only


def model_query(M, *, select_=None, order_by_=None, conditions_=None, **kwargs):
    q = M.query

    if select_:
        q = q.options(load_only(*select_))

    if conditions_:
        q = q.filter(*conditions_)

    if order_by_:
        q = q.order_by(*order_by_)

    if kwargs:
        q = q.filter_by(**kwargs)

    return q