python - SQLAlchemy equivalent to SQL "LIKE" statement

Question

A tags column has values like "apple banana orange" and "strawberry banana lemon". I want to find the SQLAlchemy equivalent statement to

SELECT * FROM table WHERE tags LIKE "%banana%";

What should I pass to Class.query.filter() to do this?

Answer 1

Each column has like() method, which can be used in query.filter(). Given a search string, add a % character on either side to search as a substring in both directions.

tag = request.form["tag"]
search = "%{}%".format(tag)
posts = Post.query.filter(Post.tags.like(search)).all()