sqlAlchemy filter query by boolean field? - flask

Question

I have a table for porducts with "is_deleted" field. I want to get only rows that have "is_deleted" = True
model.py
class ProductsModel(db.Model):
__tablename__ = "products"
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(256), nullable=False)
description = db.Column(db.Text, nullable=False)
price = db.Column(db.Float, nullable=False)
discount = db.Column(db.Float, nullable=False)
gender = db.Column(db.Enum(GenderType), nullable=False)
images = db.relationship("ProductImages", backref="product", lazy="select")
pairs = db.relationship("ProductPair", backref="product", lazy="select")
brand_id = db.Column(db.Integer, db.ForeignKey(BrandModel.id), nullable=False)
category_id = db.Column(db.Integer, db.ForeignKey(CategoryModel.id), nullable=False)
is_deleted = db.Column(db.Boolean, default=False, nullable=False)
I try with:
products = ProductsModel.query.filter_by(is_deleted = True)
And that is convert to:
SELECT products.id AS products_id, products.title AS products_title, products.description AS products_description, products.price AS products_price, products.discount AS products_discount, products.gender AS products_gender, products.brand_id AS products_brand_id, products.category_id AS products_category_id, products.is_deleted AS products_is_deleted
FROM products
WHERE false
When I try to run this, result is False:
print(ProductsModel.is_deleted)
If I manualy try to change SQL query to this and run it, I get correct data:
SELECT products.id AS products_id, products.title AS products_title, products.description AS products_description, products.price AS products_price, products.discount AS products_discount, products.gender AS products_gender, products.brand_id AS products_brand_id, products.category_id AS products_category_id, products.is_deleted AS products_is_deleted
FROM products
WHERE is_deleted is TRUE
** is_ doesn't work - The error is bool doesn't have is_ .