Как бы я исправить эту ошибку в python WTForms? - PullRequest
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Как бы я исправить эту ошибку в python WTForms?

0 голосов
/ 18 июня 2019

Я попытался создать полнофункциональное веб-приложение, и это включает использование WTForms в качестве ресурса базы данных. Я озадачен этой ошибкой,

jinja2.exceptions.UndefinedError: 'wtforms.fields.core.StringField object' has no attribute 'username'

Traceback (most recent call last):
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/flask/app.py", line 2328, in __call__
    return self.wsgi_app(environ, start_response)
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/flask/app.py", line 2314, in wsgi_app
    response = self.handle_exception(e)
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/flask/app.py", line 1760, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/flask/_compat.py", line 36, in reraise
    raise value
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/flask/app.py", line 2311, in wsgi_app
    response = self.full_dispatch_request()
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/flask/app.py", line 1834, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/flask/app.py", line 1737, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/flask/_compat.py", line 36, in reraise
    raise value
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/flask/app.py", line 1832, in full_dispatch_request
    rv = self.dispatch_request()
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/flask/app.py", line 1818, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/Users/lkendon/flaskblog/flaskblog.py", line 36, in register
    return render_template('register.html', title='Register', form=form)
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/flask/templating.py", line 135, in render_template
    context, ctx.app)
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/flask/templating.py", line 117, in _render
    rv = template.render(context)
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/jinja2/asyncsupport.py", line 76, in render
    return original_render(self, *args, **kwargs)
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/jinja2/environment.py", line 1008, in render
    return self.environment.handle_exception(exc_info, True)
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/jinja2/environment.py", line 780, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/lkendon/flaskblog/venv/lib/python3.7/site-packages/jinja2/_compat.py", line 37, in reraise
    raise value.with_traceback(tb)
  File "/Users/lkendon/flaskblog/templates/register.html", line 1, in top-level template code
    {% extends "layout.html" %}
  File "/Users/lkendon/flaskblog/templates/layout.html", line 41, in top-level template code
    {% block content %}{% endblock %}
  File "/Users/lkendon/flaskblog/templates/register.html", line 10, in block "content"
    {{form.username.username(class="form-control form-control-lg")}}
jinja2.exceptions.UndefinedError: 'wtforms.fields.core.StringField object' has no attribute 'username'

В чем здесь проблема, я следовал учебному пособию, и у меня есть те же данные, которые были введены через предоставленные фрагменты.

1 Ответ

1 голос
/ 18 июня 2019

Глядя на трассировку, вы звоните {{form.username.username(..., который должен быть {{form.username(...

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