Flask实战第46天：完成前台登录功能

后台逻辑

首先进行表单验证， 编辑front.froms.py

...
class SignInForm(BaseForm):
    telephone = StringField(validators=[Regexp(r'1[35678]\d{9}', message='手机号码格式错误')])
    password = StringField(validators=[Length(5, 30, message='密码格式错误')])
    remember = StringField()

在config.py中配置一个用作保存前台session的常量

FRONT_USER_ID = 'WFQQ132FEVFW'

然后写视图了，编辑front.view.py

...
import config
from .forms import  SignInForm

class SignInViews(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/front_signin.html', return_to=return_to)
        return render_template('front/front_signin.html')

    def post(self):
        signin_form = SignInForm(request.form)
        if signin_form.validate():
            telephone = signin_form.telephone.data
            password = signin_form.password.data
            remember = signin_form.remember.data
            user = FrontUser.query.filter_by(telephone=telephone).first()
            if user and user.check_password(password):
                session[config.FRONT_USER_ID] = user.id
                if remember:
                    session.permanent = True
                return xjson.json_success('登录成功')
            else:
                return xjson.json_param_error('手机号或密码错误')
        else:
            return xjson.json_param_error(signin_form.get_error())

bp.add_url_rule('/signin/', view_func=SignInViews.as_view('signin'))　　

前端逻辑

在static/front/js下新建个js文件front_signin.js(获取注册按钮，配置它的点击事件)

$(function(){
    $("#submit-btn").click(function (event) {
        event.preventDefault();
        var telephone_input = $("input[name='telephone']");
        var password_input = $("input[name='password']");
        var remember_input = $("input[name='remember']");

        var telephone = telephone_input.val();
        var password = password_input.val();
        var remember = remember_input.checked ? 1 : 0; //如果有选择返回1否则返回0

        bbsajax.post({
            'url': '/signin/',
            'data': {
                'telephone': telephone,
                'password': password,
                'remember': remember
            },
            '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{
                    xtalert.alertInfo(data['message']);
                }
            }
        });
    });
});

把front_signin.js引入到front_signin.html中

{% block head %}
    <script src="{{ url_for('static', filename='front/js/front_signin.js') }}"></script>
{% endblock %}

把front_signbase中的front_signup.js引入去掉，在front_signup.html中引入它

{% block head %}
    <script src="{{ url_for('static', filename='front/js/front_signup.js') }}"></script>
{% endblock %}