BBS论坛（十四）

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();
            }
        });
    });
});