Check if a Row Exists

Check if a row exists in a database table.

db.exists()

Used for checking if a row exists in a table.

Usage

db.exists(...)

Parameters:

Row, Query Object

• A query object of a database row, returned by the different selection methods.

Example

...

my_row = MyModel.db.get_by(email='[e-mail]').first()

if db.exists(my_row)
    respond(my_row.s())

status('Not found.', 404)

You have to use first() since db.get_by() returns a list* of rows.

* = Not a "normal" list, a query object.