我是新手，刚完成CS50课程，我学到了很多东西，但显然还不够，我自己没有做很多练习。
我正在为我的最终项目建立一个博客，其中包含一个非常简单的注册表格。正确填写表单后，我已使用Flash重定向到主页，并显示一条消息，提示我已成功显示。
目前，它甚至还没有进入数据库，因为我才刚刚开始，但是我不想使用已经不起作用的东西进行进一步的编码。
我对自己的代码非常有信心，好吧我以为自己是……
我正在使用Flask
import cs50
from flask import Flask, render_template, url_for, flash, redirect
from forms import RegistrationForm, LoginForm
app = Flask(__name__)
app.config["SECRET_KEY"] = '13fae0c2d2141f8ee531eb221ea40973'
posts = [
{
'author': 'Alain Hachem',
'title': 'cs50 blog post 1',
'content': 'my first blog post',
'date_posted': 'May 14, 2018'
},
{
'author': 'Hicham Sahbane',
'title': 'cs50 blog post 2',
'content': 'another blog post',
'date_posted': 'May 15, 2018'
}
]
@app.route("/")
@app.route("/home")
def home():
return render_template('home.html', posts=posts)
@app.route("/about")
def about():
return render_template('about.html', title='about')
@app.route("/register", methods=['GET', 'POST'])
def register():
form = RegistrationForm()
if form.validate_on_submit():
flash(f'Account created for {form.username.data}!', 'success')
return redirect(url_for('home'))
return render_template('register.html', title='Register', form=form)
@app.route("/login")
def login():
form = LoginForm()
return render_template('login.html', title='Login', form=form)
and then here is the HTML part that is supposed to do the job with it, all part of a layout.html that is the contains the layout for every other template page on the blog
<!DOCTYPE html>
<html>
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='main.css') }}">
{% if title %}
<title>CS50 Final - {{ title }}</title>
{% else %}
<title>CS50 Blog Project</title>
{% endif %}
</head>
<body>
<header class="site-header">
<nav class="navbar navbar-expand-md navbar-dark bg-steel fixed-top">
<div class="container">
<a class="navbar-brand mr-4" href="/">Flask Blog</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarToggle" aria-controls="navbarToggle" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarToggle">
<div class="navbar-nav mr-auto">
<a class="nav-item nav-link" href="{{ url_for('home') }}">Home</a>
<a class="nav-item nav-link" href="{{ url_for('about') }}">About</a>
</div>
<!-- Navbar Right Side -->
<div class="navbar-nav">
<a class="nav-item nav-link" href="{{ url_for('login') }}">Login</a>
<a class="nav-item nav-link" href="{{ url_for('register') }}">Register</a>
</div>
</div>
</div>
</nav>
</header>
<main role="main" class="container">
<div class="row">
<div class="col-md-8">
<!-- get a message flasing to confirm the registration -->
{% with messages = get_flashed_messages(with_categories=true) %}
{% if messages %}
{% for category, message in messages %}
<div class="alert alert-{{ category }}">
{{ message }}
</div>
{% endfor %}
{% endif %}
{% endwith %}
{% block content %}{% endblock %}
</div>
<div class="col-md-4">
<div class="content-section">
<h3>Sidebar</h3>
<p class='text-muted'>You can put any information here you'd like.
<ul class="list-group">
<li class="list-group-item list-group-item-light">Latest Posts</li>
<li class="list-group-item list-group-item-light">Announcements</li>
<li class="list-group-item list-group-item-light">Calendars</li>
<li class="list-group-item list-group-item-light">etc</li>
</ul>
</p>
</div>
</div>
</div>
</main>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
</body>
</html>
I am aware this code is still very basic ... but if this does not work, how can I expect the rest to do it.
I am working on a cloud9 ... could that be the cause of this?