這段代碼曾經可以作業，但后來被棄用了。
它現在給出一個錯誤““jinja2.exceptions.UndefinedError：'forms.SignupForm object'沒有屬性'hidden_??tag'”。
我一直在研究，似乎無法確定發生了什么變化。任何人都可以幫忙嗎？
**forms.py**
from flask_wtf import Form
from wtforms import StringField, PasswordField, SubmitField
from wtforms.validators import DataRequired, Email, Length
class SignupForm(Form):
first_name = StringField('First name', validators=[DataRequired("Please enter your first name.")])
last_name = StringField('Last name', validators=[DataRequired("Please enter your last name.")])
email = StringField('Email', validators=[DataRequired("Please enter your email address."), Email("Please enter your email address.")])
password = PasswordField('Password', validators=[DataRequired("Please enter a password."), Length(min=6, message="Passwords must be 6 characters or more.")])
submit = SubmitField('Sign up')
class LoginForm(Form):
email = StringField('Email', validators=[DataRequired("Please enter your email address."), Email("Please enter your email address.")])
password = PasswordField('Password', validators=[DataRequired("Please enter a password.")])
submit = SubmitField("Sign in")
class AddressForm(Form):
address = StringField('Address', validators=[DataRequired("Please enter an address.")])
submit = SubmitField("Search")
**routes.py**
from flask import Flask, render_template, request, session, redirect, url_for
from models import db, User, Place
from forms import SignupForm, LoginForm, AddressForm
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = "sqlite:///test.db"
db.init_app(app)
app.secret_key = "development-key"
@app.route("/")
def index():
return render_template("index.html")
@app.route("/about")
def about():
return render_template("about.html")
@app.route("/signup", methods=["GET", "POST"])
def signup():
if 'email' in session:
return redirect(url_for('home'))
form = SignupForm()
if request.method == "POST":
if form.validate() == False:
return render_template('signup.html', form=form)
else:
newuser = User(form.first_name.data, form.last_name.data, form.email.data, form.password.data)
db.session.add(newuser)
db.session.commit()
session['email'] = newuser.email
return redirect(url_for('home'))
elif request.method == "GET":
return render_template('signup.html', form=form)
@app.route("/login", methods=["GET", "POST"])
def login():
if 'email' in session:
return redirect(url_for('home'))
form = LoginForm()
if request.method == "POST":
if form.validate() == False:
return render_template("login.html", form=form)
else:
email = form.email.data
password = form.password.data
user = User.query.filter_by(email=email).first()
if user is not None and user.check_password(password):
session['email'] = form.email.data
return redirect(url_for('home'))
else:
return redirect(url_for('login'))
elif request.method == 'GET':
return render_template('login.html', form=form)
@app.route("/logout")
def logout():
session.pop('email', None)
return redirect(url_for('index'))
@app.route("/home", methods=["GET", "POST"])
def home():
if 'email' not in session:
return redirect(url_for('login'))
form = AddressForm()
places = []
my_coordinates = (-27.5447, 153.1060)
if request.method == 'POST':
if form.validate() == False:
return render_template('home.html', form=form)
else:
# get the address
address = form.address.data
# query for places around it
p = Place()
my_coordinates = p.address_to_latlng(address)
places = p.query(address)
# return those results
return render_template('home.html', form=form, my_coordinates=my_coordinates, places=places)
elif request.method == 'GET':
return render_template("home.html", form=form, my_coordinates=my_coordinates, places=places)
if __name__ == "__main__":
app.run()
**signup.html**
{% extends "layout.html" %}
{% block content %}
<main class="container signup-section">
<div class="section-content">
<h2>Create an account</h2>
<form method="POST" action="/signup">
{{ form.hidden_tag() }}
<div class="form-group">
{{ form.first_name.label }}
{% if form.first_name.errors %}
{% for error in form.first_name.errors %}
<p class="error-message">{{ error }}</p>
{% endfor %}
{% endif %}
{{ form.first_name }}
</div>
登錄.html
{% extends "layout.html" %}
{% block content %}
<main class="container signup-section">
<div class="section-content">
<h2>Log in</h2>
<form method="POST" action="/login">
{{ form.hidden_tag() }}
<div class="form-group">
{{ form.email.label }}
{{ form.email }}
</div>
<div class="form-group">
{{ form.password.label }}
{{ form.password }}
</div>
{{ form.submit(class="btn-primary") }}
<a href="{{ url_for('logout') }}" class="btn-primary">Back</a>
</form>
</div>
</main>
{% endblock %}
<div class="form-group">
{{ form.last_name.label }}
{% if form.last_name.errors %}
{% for error in form.last_name.errors %}
<p class="error-message">{{ error }}</p>
{% endfor %}
{% endif %}
{{ form.last_name }}
</div>
<div class="form-group">
{{ form.email.label }}
{% if form.email.errors %}
{% for error in form.email.errors %}
<p class="error-message">{{ error }}</p>
{% endfor %}
{% endif %}
{{ form.email }}
</div>
<div class="form-group">
{{ form.password.label }}
{% if form.password.errors %}
{% for error in form.password.errors %}
<p class="error-message">{{ error }}</p>
{% endfor %}
{% endif %}
{{ form.password }}
</div>
{{ form.submit(class="btn-primary") }}
<a href="{{ url_for('logout') }}" class="btn-primary">Back</a>
</form>
</div>
</main>
{% endblock %}
我嘗試了一些關于 stackoverflow 的修復。沒有一個作業。
uj5u.com熱心網友回復：
除了表單物件之外，您的代碼看起來不錯，嘗試將匯入行更改為：
from flask_wtf import FlaskForm
在您的表單類中繼承自 FaskForm 而不是 Form 類。為了生成 csrf 令牌，您必須有一個密鑰，這通常與您的 Flask 應用程式密鑰相同。如果要使用另一個密鑰，請配置它：
轉載請註明出處，本文鏈接：https://www.uj5u.com/caozuo/525189.html