Peewee Foreignkeyfield不接受適當的外鍵字段

Question

我在我的燒瓶應用程序中使用Python Peewee ORM作為數據庫。 我有一個用戶定義的票證，如下所示：

class Ticket(db.Model):
    created = DateTimeField(default=datetime.utcnow)
    event_id = CharField()
    owner = ForeignKeyField(User, related_name='owned_tickets')

然后，我嘗試如下保存票證：

ticket = Ticket()
ticket.event_id=request.form['eventId']
ticket.owner=g.user
ticket.save()

但是我收到TypeError: int() argument must be a string or a number, not 'User'帶有（巨大）堆棧跟蹤的TypeError: int() argument must be a string or a number, not 'User' ，我在下面粘貼了該跟蹤。 奇怪的是，我將字段定義為ForeignKeyField(User)類型，但似乎要求輸入字符串/數字。

有人知道我在做什么錯嗎？ 歡迎所有提示！

Traceback (most recent call last):
  File "/Library/Python/2.7/site-packages/flask/app.py", line 1836, in __call__
    return self.wsgi_app(environ, start_response)
  File "/Library/Python/2.7/site-packages/flask/app.py", line 1820, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/Library/Python/2.7/site-packages/flask/app.py", line 1403, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/Library/Python/2.7/site-packages/flask/app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "/Library/Python/2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/Library/Python/2.7/site-packages/flask/app.py", line 1381, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/Library/Python/2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request
    rv = self.dispatch_request()
  File "/Library/Python/2.7/site-packages/flask/app.py", line 1461, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/Library/Python/2.7/site-packages/flask_login.py", line 758, in decorated_view
    return func(*args, **kwargs)
  File "/Users/kramer65/dev/repos/tc/app/views/webviews.py", line 120, in myTickets
    ticket.save()
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 3511, in save
    pk_from_cursor = self.insert(**field_dict).execute()
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 2565, in execute
    return self.database.last_insert_id(self._execute(), self.model_class)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 2126, in _execute
    sql, params = self.sql()
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 2556, in sql
    return self.compiler().generate_insert(self)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1530, in generate_insert
    return self.build_query(clauses, alias_map)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1359, in build_query
    return self.parse_node(Clause(*clauses), alias_map)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1320, in parse_node
    sql, params, unknown = self._parse(node, alias_map, conv)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1295, in _parse
    sql, params = self._parse_map[node_type](node, alias_map, conv)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1248, in _parse_clause
    node.nodes, alias_map, conv, node.glue)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1337, in parse_node_list
    node_sql, node_params = self.parse_node(node, alias_map, conv)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1320, in parse_node
    sql, params, unknown = self._parse(node, alias_map, conv)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1295, in _parse
    sql, params = self._parse_map[node_type](node, alias_map, conv)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1248, in _parse_clause
    node.nodes, alias_map, conv, node.glue)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1337, in parse_node_list
    node_sql, node_params = self.parse_node(node, alias_map, conv)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1320, in parse_node
    sql, params, unknown = self._parse(node, alias_map, conv)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1295, in _parse
    sql, params = self._parse_map[node_type](node, alias_map, conv)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1248, in _parse_clause
    node.nodes, alias_map, conv, node.glue)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1337, in parse_node_list
    node_sql, node_params = self.parse_node(node, alias_map, conv)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1320, in parse_node
    sql, params, unknown = self._parse(node, alias_map, conv)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1295, in _parse
    sql, params = self._parse_map[node_type](node, alias_map, conv)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1236, in _parse_param
    params = [node.conv(node.value)]
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 1052, in db_value
    return self.to_field.db_value(value)
  File "build/bdist.macosx-10.9-intel/egg/peewee.py", line 674, in db_value
    return value if value is None else self.coerce(value)
  File "/Library/Python/2.7/site-packages/werkzeug/local.py", line 390, in <lambda>
    __int__ = lambda x: int(x._get_current_object())
TypeError: int() argument must be a string or a number, not 'User'

[編輯]好的，該錯誤似乎位於我到目前為止發布的代碼中之外的其他地方。 我嘗試從python交互式解釋器中添加票證，該票證效果很好。 當我print type(g.user)我得到類型<class 'werkzeug.local.LocalProxy'> print type(g.user) <class 'werkzeug.local.LocalProxy'> 。 這很奇怪，因為我能夠簡單地打印出正確的g.user.username和g.user.password 。 User類如下所示：

class User(relDb.Model, BaseUser):
    username = CharField()
    password = CharField()

    def is_authenticated(self):
        return True

    def is_active(self):
        return True

    def is_anonymous(self):
        return False

    def get_id(self):
        return unicode(self.id)

我將g.user對象設置如下：

@app.before_request
def before_request():
    g.user = current_user

有人對g.user為什么給出werkzeug.local.LocalProxy而不是User類有其他想法嗎？ 歡迎所有提示！

Answer 1

好吧，經過一番閱讀之后，我找到了解決方案。 由於g從不返回基礎對象，而只是充當將命令傳遞給實際對象並返回結果的代理，因此我需要獲取g.user指向的對象，方法如下：

ticket.owner = g.user._get_current_object()

將其保存在我的票證模型中就像一種魅力。

PS。 由於這有效，所以我現在就使用它。 但是，如果這種方法有什么問題，我很想聽聽。