flash
@app.route('/login/', methods=['POST'])
def login():
username = request.form.get('user')
pwd = request.form.get('pwd')
if not username:
flash('please input username')
return render_template('index.html')
if not pwd:
flash('please input password')
return render_template('index.html')
if username == 'root' and pwd == '123456':
flash('login success')
else:
flash('username or password wrong')
return render_template('index.html')
<div class="alert alert-success"><p class="text-center">{{ get_flashed_messages()[0] }}</p></div>
404
from flask import abort
abort(404)
@app.errorhandler(404)
def not_found(e):
return render_template('404.html')
form表單
from flask import Flask, request, render_template, redirect
from wtforms import Form, StringField, PasswordField, validators, BooleanField, SubmitField
class LoginForm(Form):
username = StringField('username', [validators.data_required()])
password = PasswordField('password', [validators.data_required()])
remember = BooleanField('記住我')
submit = SubmitField('登錄')
@app.route('/', methods=['GET', 'POST'])
def form():
myform = LoginForm(request.form)
if request.method == 'POST':
if myform.username.data == 'root' and myform.password.data == 'toor':
print(myform.remember.data)
return redirect('http://www.baidu.com')
else:
massage = 'Login Failed'
return render_template('form.html', massage=massage, form=myform)
return render_template('form.html', form=myform)
<div align="center" >
<form action="/" method="post">
<h1>User Manage</h1>
{% if massage %}
{{ massage }}
<br>
{% endif %}
用戶：{{ form.username }}
<br>
密碼：{{ form.password }}
<br>
{{ form.remember.label }}
{{ form.remember }}
<br>
{{ form.submit }}
</form>
</div>
