所以我正在尝试在网页上加载SelectField。当我使用浏览器连接localhost时,Flask崩溃。有了这条消息:“* Debugger PIN:320-071-095”
from flask import Flask, render_template, request
from flask_wtf import FlaskForm
from wtforms import SelectField, RadioField
from main import mut_infos, year_infos
app = Flask(__name__)
app.config['SECRET_KEY'] = "BoomVroom"
class SelYear(FlaskForm):
years = SelectField(u'year', choices= list(year_infos.keys()),coerce=int)
@app.route('/')
def index():
form = SelYear()
return render_template("index.html", form=form)
years_infos是一个以整数为键的字典。
这是index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Flask WebApp</title>
</head>
<body>
<form method="POST" action="{{ url_for('index') }}">
{{ form.csrf_token }}
{{ form.years }}
</form>
</body>
</html>
编辑:在终端上
* Serving Flask app "app" (lazy loading)
* Environment: production
WARNING: Do not use the development server in a production environment.
Use a production WSGI server instead.
* Debug mode: on
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
* Restarting with stat
* Debugger is active!
* Debugger PIN: 320-071-095
在网页上,它只是说无法找到服务器“嗯。我们在查找该网站时遇到了麻烦。”
我想你必须重新审视你的选择清单。可以在doc中找到,SelectField需要一个元组列表:qazxsw poi
choices = [('cpp','C ++'),('py','Python'),('text','Plain Text')]
你能做的是这样的:
https://wtforms.readthedocs.io/en/stable/fields.html
并将您的选择= list(year_infos.keys())指向该选择列表功能。