Question

我将Flask-SQLAlchemy与Flask一起使用来建立我的网站，当我尝试访问我网站的投资组合部分时，我一直收到此错误。

Traceback (most recent call last):
  File "/home/ec2-user/environment/jackmerrill.com/flask/lib/python3.6/dist-packages/flask/app.py", line 2309, in __call__
    return self.wsgi_app(environ, start_response)
  File "/home/ec2-user/environment/jackmerrill.com/flask/lib/python3.6/dist-packages/flask/app.py", line 2295, in wsgi_app
    response = self.handle_exception(e)
  File "/home/ec2-user/environment/jackmerrill.com/flask/lib/python3.6/dist-packages/flask/app.py", line 1741, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/home/ec2-user/environment/jackmerrill.com/flask/lib/python3.6/dist-packages/flask/_compat.py", line 35, in reraise
    raise value
  File "/home/ec2-user/environment/jackmerrill.com/flask/lib/python3.6/dist-packages/flask/app.py", line 2292, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/ec2-user/environment/jackmerrill.com/flask/lib/python3.6/dist-packages/flask/app.py", line 1815, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/ec2-user/environment/jackmerrill.com/flask/lib/python3.6/dist-packages/flask/app.py", line 1718, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/ec2-user/environment/jackmerrill.com/flask/lib/python3.6/dist-packages/flask/_compat.py", line 35, in reraise
    raise value
  File "/home/ec2-user/environment/jackmerrill.com/flask/lib/python3.6/dist-packages/flask/app.py", line 1813, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/ec2-user/environment/jackmerrill.com/flask/lib/python3.6/dist-packages/flask/app.py", line 1799, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/ec2-user/environment/jackmerrill.com/server.py", line 56, in portfolio
    return render_template("portfolio.html", cards = [portfolio_dict(projects) for project in projects])
  File "/home/ec2-user/environment/jackmerrill.com/server.py", line 56, in <listcomp>
    return render_template("portfolio.html", cards = [portfolio_dict(projects) for project in projects])
  File "/home/ec2-user/environment/jackmerrill.com/server.py", line 46, in portfolio_dict
    return dict(id=port.id, title=port.title, text=port.text, link=port.link, imagelink=port.imagelink)
AttributeError: 'list' object has no attribute 'id'

相关代码在这里：

class Portfolio(db.Model):
    id = db.Column(db.Integer(), primary_key=True)
    title = db.Column(db.String(100))
    text = db.Column(db.String(2000))
    imagelink = db.Column(db.String(2000))
    link = db.Column(db.String(2000))


# Create all database tables
db.create_all()

def portfolio_dict(port):
    return dict(id=port.id, title=port.title, text=port.text, link=port.link, imagelink=port.imagelink)

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/portfolio')
def portfolio():
    projects = Portfolio.query.all()
    print(projects)
    return render_template("portfolio.html", cards = [portfolio_dict(projects) for project in projects])

编辑：我像这样在HTML文件中调用cards变量：

{{ cards | tojson }}

我可能做错了什么？我曾经使用过这种方法来处理整个SQLite表，然后将其转换为Python字典，但这从未发生过。

感谢您的帮助。谢谢！

Answer 1

您的代码中有一个错字。在列表理解范围内，它应该是portfolio_dict(project)而不是portfolio_dict(projects)。

AttributeError：“列表”对象没有属性“ id”

1 个答案: