python - Flask: TypeError: blog() 有一个意外的关键字参数 'user'

Question

我有一个模型“博客”，我正在尝试为其创建一个实例并将其添加到数据库中。但是，当我尝试创建实例时出现错误 TypeError: blog() got an unexpected keyword argument 'user'，当我删除参数 user 时它说:TypeError: blog () 得到了一个意外的关键字参数 'title' 等等所有参数。
代码:

型号:

class blog(db.Model):
    _id = db.Column("id", db.Integer, primary_key=True)
    user = db.Column("user", db.String)
    title = db.Column("title", db.String())
    body = db.Column("body", db.String())
    images = db.Column("images", ScalarListType())
    def __init__(self, user, title, body, images):
        self.user = user
        self.title = title
        self.body = body
        self.images = images

功能:

@app.route('/add_blog', defaults={'realfiles': ""}, methods=['GET', 'POST'])
@app.route('/add_blog:<realfiles>', methods=['GET', 'POST'])
def add_blog(realfiles):
    if request.method == "POST":
        title = request.form["title"]
        body = request.form["body"]
        images = realfiles
        user = '1'
        new_blog = blog(user = user, title = title, body = body, images = images)
        for f in realfiles.split(','):
            os.rename(os.path.join(app.root_path, 'static\\temp', f), os.path.join(app.root_path,'static\\uploads', f))
        db.session.add(new_blog)
        db.session.commit()
        flash(f"added the blog {new_blog.title}!")
        return redirect(url_for("home"))
    if realfiles == "":
        return render_template("add_blog.html")
    return render_template("add_blog.html", realfiles=realfiles.split(','))

参数realfiles是一个字符串。

编辑:

我尝试更改属性名称、重新启动计算机、删除数据库并创建一个新数据库，但以上均无效

编辑 1:我将变量更改为“名称”而不是“用户”。还是行不通。这是完整的回溯

TypeError
TypeError: blog() got an unexpected keyword argument 'name'

Traceback (most recent call last)
File "C:\Users\user\.virtualenvs\JoelBlog-UELb-k-q\Lib\site-packages\flask\app.py", line 2464, in __call__
return self.wsgi_app(environ, start_response)
File "C:\Users\user\.virtualenvs\JoelBlog-UELb-k-q\Lib\site-packages\flask\app.py", line 2450, in wsgi_app
response = self.handle_exception(e)
File "C:\Users\user\.virtualenvs\JoelBlog-UELb-k-q\Lib\site-packages\flask\app.py", line 1867, in handle_exception
reraise(exc_type, exc_value, tb)
File "C:\Users\user\.virtualenvs\JoelBlog-UELb-k-q\Lib\site-packages\flask\_compat.py", line 39, in reraise
raise value
File "C:\Users\user\.virtualenvs\JoelBlog-UELb-k-q\Lib\site-packages\flask\app.py", line 2447, in wsgi_app
response = self.full_dispatch_request()
File "C:\Users\user\.virtualenvs\JoelBlog-UELb-k-q\Lib\site-packages\flask\app.py", line 1952, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Users\user\.virtualenvs\JoelBlog-UELb-k-q\Lib\site-packages\flask\app.py", line 1821, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "C:\Users\user\.virtualenvs\JoelBlog-UELb-k-q\Lib\site-packages\flask\_compat.py", line 39, in reraise
raise value
File "C:\Users\user\.virtualenvs\JoelBlog-UELb-k-q\Lib\site-packages\flask\app.py", line 1950, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Users\user\.virtualenvs\JoelBlog-UELb-k-q\Lib\site-packages\flask\app.py", line 1936, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "D:\Google Drive\PythonProjects\JoelBlog\app.py", line 96, in add_blog
new_blog = blog(name = user, title = title, body = body, images = images)
TypeError: blog() got an unexpected keyword argument 'name'

你能帮忙吗？谢谢

Answer 1

它失败的原因是你有一个 init 函数，它不需要键/值参数。如果没有 init，那么您可以在尝试时调用它。根据您的调用方式，您可以使用 def init(self, **kwargs)，然后使用 kwargs.get(...)。

class blog(db.Model):
    _id = db.Column("id", db.Integer, primary_key=True)
    user = db.Column("user", db.String)
    title = db.Column("title", db.String())
    body = db.Column("body", db.String())
    images = db.Column("images", ScalarListType())
    def __init__(self, **kwargs):
        self.user = kwargs.get('user')
        self.title = kwargs.get('title')
        self.body = kwargs.get('body')
        self.images = kwargs.get('images')