尝试使用 Python Flask Wtform 接收数据但无法正常工作

Question

我正在学习Python、Flask 和WTForm。我的目的是在“/login”HTML页面上输入所需的电子邮件和密码，然后单击CommentForm class中定义的“登录”按钮后，页面将被导航到“成功”或“拒绝”页面。但是，代码不起作用。单击按钮后，页面保持静止，而不是导航到另一个页面。下面的代码有什么问题吗？谢谢

在main.py⬇️

class CommentForm(FlaskForm):
    email = StringField(label="Email", validators=[Email()])
    password = PasswordField(label="Password", validators=[DataRequired(), Length(min=8)])
    submit = SubmitField(label="Log In")
    recaptcha = RecaptchaField()


@app.route("/login", methods=['GET', 'POST'])
def login():
    form = CommentForm(request.form)
    if request.method == 'POST' and form.validate():
        if form.email.data == "admin@email.com" and form.password.data == "12345678":
            return render_template("success.html")
        else:
            return render_template("denied.html")
    return render_template("login.html", form=form)

在login.html⬇️

<form method="post" action="{{ url_for('login') }}">
    {{ form.csrf_token }}
    {{ form.email.label }}<br>
    {{ form.email(rows=1, cols=30) }}
    {% for err in form.email.errors %}
        <span style="color:red">{{err}}</span>
    {% endfor %}<br>

     {{ form.password.label }}<br>
     {{ form.password(rows=1, cols=30) }}
     {% for err in form.password.errors %}
        <span style="color:red">{{err}}</span>
    {% endfor %}<br>

    {{form.submit}}
 </form>

Answer 1

我尝试运行您的代码（并尝试了一些更改）

Python


@app.route("/login", methods=['GET', 'POST'])
def login():
  if request.method == "GET":
    form = CommentForm(request.form)
    return render_template("login.html", form = form)
  elif request.method == 'POST':
    form = CommentForm(request.form)
    if form.validate_on_submit():
      if form.email.data == "admin@email.com" and form.password.data == "12345678":
          return "Welcome User"
    elif not form.validate_on_submit():
      print(form.errors)
      return "Hey it is invalid"
  return "??"

这导致调用 elif 时出现错误

{'recaptcha': ['The response parameter is missing.']}

解决这个问题

在您的login.html
上添加{{form.recaptcha}}
转到https://www.google.com/recaptcha/admin/create
填写表格并获得public和私钥
在你的 flask 应用集上

app.config["RECAPTCHA_PUBLIC_KEY"] = "yourkey"
app.config["RECAPTCHA_PRIVATE_KEY"] = "yourkey"

尝试使用 Python Flask Wtform 接收数据但无法正常工作

Trying to receive data using Python Flask Wtform but not working

python

flask

flask-wtforms