14.1注册完成跳到上一个页面
（1）front/form.py
# front/forms.py
__author__ = 'derek' from ..forms import BaseForm
from wtforms import StringField
from wtforms.validators import Regexp,ValidationError,EqualTo
from utils import zlcache class SignupForm(BaseForm):
telephone=StringField(validators=[Regexp(r'1[3578]\d{9}',message='请输入正确格式的手机号码')])
sms_captcha=StringField(validators=[Regexp(r'\w{4}',message='请输入四位短信验证码')])
username=StringField(validators=[Regexp(r'.{3,15}',message='用户名长度在3-15位之间')])
password=StringField(validators=[Regexp(r'[0-9a-zA-Z_\.]{6,15}',message='请输入正确格式的密码')])
password2=StringField(validators=[EqualTo('password',message='两次输入的密码不一致')])
graph_captcha=StringField(validators=[Regexp(r'\w{4}',message='图形验证码不正确')]) def validate_sms_captcha(self,field):
# 必须传入的参数self,field
# 使用fields.data和使用self.sms_captcha.data是一样的 sms_captcha=field.data
telephone=self.telephone.data
if sms_captcha != '':
sms_captcha_mem=zlcache.get(telephone)
if not sms_captcha_mem or sms_captcha_mem.lower() != sms_captcha.lower():
raise ValidationError(message='短信验证码错误') def validate_graph_captcha(self,field):
graph_captcha=field.data
if graph_captcha != '':
graph_captcha_mem=zlcache.get(graph_captcha.lower())
if not graph_captcha_mem:
raise ValidationError(message='图形验证码错误')
（2）utils/safeutils.py
from urllib.parse import urlparse,urljoin
from flask import request def is_safe_url(target):
ref_url = urlparse(request.host_url)
test_url = urlparse(urljoin(request.host_url, target))
return test_url.scheme in ('http', 'https') and \
ref_url.netloc == test_url.netloc
（3）front/views.py
class SignupView(views.MethodView):
def get(self):
return_to = request.referrer
if return_to and return_to != request.url and safeutils.is_safe_url(return_to):
return render_template('front/signup.html', return_to=return_to)
else:
return render_template('front/signup.html') def post(self):
form = SignupForm(request.form)
if form.validate():
telephone = form.telephone.data
username = form.username.data
password = form.password.data
user = FrontUser(telephone=telephone, username=username, password=password)
db.session.add(user)
db.session.commit()
return restful.success()
else:
print(form.get_error())
return restful.params_error(message=form.get_error())
（4）front/signup.html
<div class="form-group">
<span style="display: none" id="return-to-span">{{ return_to }}</span>
<button id="submit-btn" class="btn btn-warning btn-block">立即注册</button>
</div>
（6）front/signup.js
$(function () {
$('#submit-btn').on('click', function () {
var telephone_input = $('input[name=telephone]');
var sms_captcha_input = $('input[name=sms_captcha]');
var username_input = $('input[name=username]');
var password_input = $('input[name=password1]');
var password2_input = $('input[name=password2]');
var graph_captcha_input = $('input[name=graph_captcha]');
var telephone = telephone_input.val();
var sms_captcha = sms_captcha_input.val();
var username = username_input.val();
var password = password_input.val();
var password2 = password2_input.val();
var graph_captcha = graph_captcha_input.val();
zlajax.post({
'url': '/signup/',
'data': {
'telephone': telephone,
'sms_captcha': sms_captcha,
'username': username,
'password': password,
'password2': password2,
'graph_captcha': graph_captcha
},
'success': function (data) {
if (data['code'] == 200) {
var return_to = $('#return-to-span').text();
if (return_to) {
window.location = return_to
} else {
window.location = '/'
}
} else {
zlalert.alertInfoToast(data['message']);
}
},
'fail': function () {
zlalert.alertNetworkError();
}
});
});
});