[英]SQLAlchemy filter by dict of lists
Trying to make a query in flask_sqlalchemy.尝试在flask_sqlalchemy 中进行查询。 I want to filter using a dict of lists and using ORM not a query string.我想使用列表字典和使用 ORM 而不是查询字符串进行过滤。 Still new to SQLAlchemy so any help would be appreciated.对 SQLAlchemy 还是新手,所以任何帮助将不胜感激。
I know I can do:我知道我可以做到:
filter = {
'name': 'apple'
, 'age': 14
}
Items.query.filter(**filter).all()
Which translates to:翻译成:
SELECT * FROM items WHERE name = 'apple' AND age = 14;
But I want:但我想要:
filter = {
'name': ['apple', 'pear']
, 'age': [14, 15, 21]
}
To be:成为:
SELECT * FROM items WHERE name IN ('apple', 'pear') AND age IN (14, 15, 21);
This seems to do the trick:这似乎可以解决问题:
filter = {
'name': ['apple', 'pear']
, 'age': [14, 15, 21]
}
items = Item.query
for field in query:
items = items.filter(getattr(Item, field).in_(query[field]))
items = items.all()
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