欢迎，{{username}}！

Question

我正在开发一个简单的烧瓶应用程序，它显示一个带有用户，密码，验证通过和电子邮件的基本表单。我现在的方式，如果没有错误，而不是去我告诉它的页面（welcome.html），它只是回到我的主页（index.html）。代码中有注释引导您完成它。请帮助我一直绞尽脑汁和互联网，并在过去一周尝试了很多东西，我需要这个用于学校，否则我将失败。这是我的申请代码：

from flask import Flask, request, redirect, render_template
import jinja2
import cgi

app = Flask(__name__)

app.config['DEBUG'] = True

@app.route("/", methods=['GET'])
def index():
    return render_template("index.html")

#if my form makes a post request at the route / (as defined in the form in the index page), then go to index again, or welcome page
@app.route("/", methods=['POST'])
def welcome():
    username = str(request.form.get('username-actual'))
    password = str(request.form.get('password-actual'))
    verifiedpassword = str(request.form.get('verifedpassword-actual'))
    email = str(request.form.get('email-actual'))

    #if (not username) or len(username) < 3 or len(username) > 20 or ' ' in username: IGNORE THIS

    #If any of the fields have any of these conditions, fill the error message with the message. otherwise, empty

    if username == '' or len(username) < 3 or len(username) > 20 or ' ' in username:
        usererror = "Invalid username lol"
    else:
        usererror = ""

    if password == '' or len(password) < 3 or len(password) > 20 or ' ' in password:
        passworderror = "Invalid password lol"
    else:
        passworderror = ""

    if verifiedpassword != password:
        verifiedpassworderror = "Passwords dont match lol"
    else:
        verifiedpassworderror = ""

    if email == '' or len(email) < 3 or len(email) > 20 or ' ' in email or '@' not in email:
        emailerror = "Invalid email lol"
    else:
        emailerror = ""

    #if any of the error messages are not empty (meaning there are error messages), render the home page again, with the necessary strings provided for jinja
    if len(usererror) > 0 or len(passworderror) > 0 or len(verifiedpassworderror) > 0 or len(emailerror) > 0:
        return render_template("index",usererror=usererror,
                            passworderror=passworderror,
                            verifiedpassworderror=verifiedpassworderror,
                            emailerror=emailerror,
                            username=username,
                            email=email,)
    #otherwise, go to the welcome page, with the necessary username
    else:  
        return render_template("welcome.html",username=username)

app.run()

这里分别是我的两个表单index.html和welcome.html：

<!doctype html>
<html>
<head>
    <title>
        User Sign-up
    </title>
    <style>
        .error { color:red; }
    </style>
</head>
<body>
    <h1>Sign-up</h1>
    <br>
    <form action="/" method="post">

        <div>
            <label>Username:  <input type="text" name="username-actual" value="{{username}}"></label> 
            <p class="error">{{usererror}}</p>
        </div>

        <div>
            <label>Password:  <input type="password" name="password-actual"></label>
            <p class="error">{{passworderror}}</p>
        </div>

        <div>
            <label>Verify Password:  <input type="password" name="verifiedpassword-actual"></label>
            <p class="error">{{verifypassworderror}}</p>
        </div>

        <div>
            <label>Email (optional):  <input type="text" name="email-actual" value="{{email}}"></label>
            <p class="error">{{emailerror}}</p>
        </div>

        <div>
            <input type="submit" name="sign-up-submit" value="Sign Up!">
        </div>

    </form>

</body>
</html> <p></p>

以下是我的welcome.html：

欢迎，{{username}}！

Flask应用程序（使用jinja2）将不会呈现我想要的模板（方法问题？）

欢迎，{{username}}！

0 个答案: