EDIT Found my error! Leaving problem description as is, but appending answer bellow.
In my registration function, I want to create a new User object. I've defined a User Table like this:
class User(_USERDB.Model, UserMixin):
"""
User defining Data
"""
__tablename__ = "users"
__table_args__ = {'extend_existing': True}
id = Column(Integer, primary_key=True)
mail = Column(Text, unique=True, nullable=False)
pw = Column(Text, nullable=False)
date_of_creation = Column(DateTime(timezone=True), default=datetime.now) # the date the user is created
settings = relationship("UserSettingProfile", back_populates="user", passive_deletes=True)
admin = Column(Boolean, default=False, nullable=False)
world_id = Column(Integer, nullable=True)
def __dict__(self):
return {
"id": self.id,
"mail": self.mail,
"date_of_creation": self.date_of_creation,
"admin": self.admin,
"world_id": self.world_id
}
If I now use the constructor as in other tutorials (TechWithTim - Flask Bog tutorial)
new_user = User(mail=mail, pw=pw_hash, admin=admin)
I get the error from the Title
"AttributeError: 'function' object has no attribute 'get'"
I've already tried stepping through the debugger to spot where this comes from, but it's not much more helpful than the stack trace. All I did was validate that the stack trace, is the stack trace (not very helpful indeed)
Traceback (most recent call last):
File "E:\project\venv\Lib\site-packages\flask\app.py", line 2091, in __call__
return self.wsgi_app(environ, start_response)
File "E:\project\venv\Lib\site-packages\flask\app.py", line 2076, in wsgi_app
response = self.handle_exception(e)
File "E:\project\venv\Lib\site-packages\flask\app.py", line 2073, in wsgi_app
response = self.full_dispatch_request()
File "E:\project\venv\Lib\site-packages\flask\app.py", line 1518, in full_dispatch_request
rv = self.handle_user_exception(e)
File "E:\project\venv\Lib\site-packages\flask\app.py", line 1516, in full_dispatch_request
rv = self.dispatch_request()
File "E:\project\venv\Lib\site-packages\flask\app.py", line 1502, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
File "E:\project\web_interface\routes\api_routing.py", line 135, in register
new_user = User(mail=mail, pw=pw_hash, admin=admin)
File "<string>", line 4, in __init__
File "E:\project\venv\Lib\site-packages\sqlalchemy\orm\state.py", line 479, in _initialize_instance
with util.safe_reraise():
File "E:\project\venv\Lib\site-packages\sqlalchemy\util\langhelpers.py", line 70, in __exit__
compat.raise_(
File "E:\project\venv\Lib\site-packages\sqlalchemy\util\compat.py", line 207, in raise_
raise exception
File "E:\project\venv\Lib\site-packages\sqlalchemy\orm\state.py", line 477, in _initialize_instance
return manager.original_init(*mixed[1:], **kwargs)
File "E:\project\venv\Lib\site-packages\sqlalchemy\orm\decl_base.py", line 1157, in _declarative_constructor
setattr(self, k, kwargs[k])
File "E:\project\venv\Lib\site-packages\sqlalchemy\orm\attributes.py", line 459, in __set__
self.impl.set(
File "E:\project\venv\Lib\site-packages\sqlalchemy\orm\attributes.py", line 1094, in set
old = dict_.get(self.key, NO_VALUE)
AttributeError: 'function' object has no attribute 'get'
For completion's sake, here is my api_routing.py file:
from flask import Blueprint, request, jsonify
from database import User, UserSettingProfile
@api_routes.route("/register", methods=["POST"])
def register():
response = {"message": ""}
try:
mail = request.values["mail"]
pw1 = request.values["pw1"]
pw2 = request.values["pw2"]
except KeyError as e:
response["message"] = f"{e=} | Missing argument. Expected: mail, password1, password2"
return jsonify(response), 400
admin = False
pw_hash = hash_pw(pw1)
print(f"{pw_hash=}\n{mail=}\n{admin=}")
new_user = User(mail=mail, pw=pw_hash, admin=admin)
print(new_user)
new_user_settings = UserSettingProfile(user_id=new_user.id)
_USERDB.session.add(new_user)
_USERDB.session.add(new_user_settings)
_USERDB.session.commit()
login_user(new_user, remember=True)
response["message"] = f"{mail=} registered and logged in successfully"
return jsonify(response), 200
All the parameters that I pass on into the User() constructor are valid and as expected:
pw_hash='$2b$14$6UpznQzJgw/zLZLGmjBkfOpm.D8iGXf/OsfqRkAVyzcZFM88kdos2'
mail='test_mail'
admin=False
After looking at other posts, I double-checked: The name "User" in the namespace indeed maps to the model-class I defined.
__dict__attribute already, which you should not overwrite. In general avoid giving attributes names that begin and end in double-underscores; this format is used by Python to denote special attributes.class myClass: def __init__(self): self.name="My Name"This has as a native str method with output:"<__main__.myClass object at 0x000001D338C475E0>", which is not very readable. You probably don't want this in many occasions as you your default str response. Instead you may do things like overwriting it like this:class myClass2: def __init__(self): self.name="My Name" def __str__(self): return f"{self.name}"Now the return is:'My Name'__dict__is an attribute, not a function, so converting it to a function is likely to cause problems. To get a dict of attributes you might try vars, your method with a different name or a serialisation package like marshmallow.